construction equipment(VIBRATOR)
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Prestressed concrete
This document discusses different methods of prestressing concrete, including pretensioning and post-tensioning. Pretensioning involves stressing steel tendons before placing concrete around them, while post-tensioning involves stressing tendons after the concrete has cured using hydraulic jacks. Post-tensioning allows for longer spans, thinner slabs, and more architectural freedom compared to conventional reinforced concrete or pretensioned concrete. Common applications of post-tensioning include parking structures, bridges, and building floors and roofs.
Pre-stressed concrete
Prestressed concrete uses high-strength steel tendons or cables to put concrete members into compression prior to stresses from service loads being applied. This counters the tensile stresses induced by loading and improves the behavior of the concrete. There are two main methods - pretensioning and post-tensioning. Pretensioning involves stressing steel tendons before concrete is cast, while post-tensioning stresses steel tendons after the concrete has hardened. Losses in prestress over time include elastic shortening, anchorage slip, friction, creep, shrinkage, and steel relaxation. Proper material selection and design can minimize these losses and optimize the performance of prestressed concrete.
Pile driving equipment
The document discusses different methods of pile driving. It describes pile driving as the operation of inserting piles into the ground using hammers. The selection of a pile driving method depends on factors like soil type, costs, pile material, length, and water level. Common pile driving methods include hammer driving using drop hammers, single-acting steam/pneumatic hammers, double-acting hammers, diesel hammers, and vibratory hammers. Other techniques involve water jetting with hammering or partial augering of piles.
Mixing of concrete.pptx
This document provides an overview of concrete, including its ingredients, types, proportioning, batching, water-cement ratio, mixing, slump test, workability, and ready mix concrete. Concrete is composed of cement, fine aggregates, coarse aggregates, water, and sometimes admixtures. It is proportioned using various methods and batched by volume or weight. The water-cement ratio affects the strength and workability of concrete. Mixing is done by hand or machine to produce a homogeneous mixture. Workability and consistency are evaluated using a slump test. Ready mix concrete is manufactured off-site and delivered to the construction location by truck.
Prefabrication
In these slides, prefabrication types and methods are integrated through easy language and diagrams.....
Process of manufacture of concrete
VARIOUS STAGES OF MANUFACTURING OF CONCRETE:
BATCHING
MIXING
TRANSPORTING
PLACING
COMPACTING
CURING
FINISHING
Types of Concrete
Types of Concrete in Civil Enginering with their proper;
Application/Uses
Advantages
Disadvantages
earthquake resistant ppt
The document discusses earthquake resistant building design techniques. It begins by defining earthquakes and explaining seismology, the study of seismic waves. It then discusses different types of ground shaking caused by earthquakes like shaking, landslides, and liquefaction. It introduces earthquake zones and describes earthquake resistant design as designing buildings to resist seismic forces. Popular techniques discussed include shear walls, bracing, seismic dampers, isolation, bands, and rollers. Specific techniques like shear walls, bracing, dampers, base isolation, horizontal bands, and expansion joints are explained. Suggestions for earthquake resistant design and construction are provided.
Recommended
Prestressed concrete
This document discusses different methods of prestressing concrete, including pretensioning and post-tensioning. Pretensioning involves stressing steel tendons before placing concrete around them, while post-tensioning involves stressing tendons after the concrete has cured using hydraulic jacks. Post-tensioning allows for longer spans, thinner slabs, and more architectural freedom compared to conventional reinforced concrete or pretensioned concrete. Common applications of post-tensioning include parking structures, bridges, and building floors and roofs.
Pre-stressed concrete
Prestressed concrete uses high-strength steel tendons or cables to put concrete members into compression prior to stresses from service loads being applied. This counters the tensile stresses induced by loading and improves the behavior of the concrete. There are two main methods - pretensioning and post-tensioning. Pretensioning involves stressing steel tendons before concrete is cast, while post-tensioning stresses steel tendons after the concrete has hardened. Losses in prestress over time include elastic shortening, anchorage slip, friction, creep, shrinkage, and steel relaxation. Proper material selection and design can minimize these losses and optimize the performance of prestressed concrete.
Pile driving equipment
The document discusses different methods of pile driving. It describes pile driving as the operation of inserting piles into the ground using hammers. The selection of a pile driving method depends on factors like soil type, costs, pile material, length, and water level. Common pile driving methods include hammer driving using drop hammers, single-acting steam/pneumatic hammers, double-acting hammers, diesel hammers, and vibratory hammers. Other techniques involve water jetting with hammering or partial augering of piles.
Mixing of concrete.pptx
This document provides an overview of concrete, including its ingredients, types, proportioning, batching, water-cement ratio, mixing, slump test, workability, and ready mix concrete. Concrete is composed of cement, fine aggregates, coarse aggregates, water, and sometimes admixtures. It is proportioned using various methods and batched by volume or weight. The water-cement ratio affects the strength and workability of concrete. Mixing is done by hand or machine to produce a homogeneous mixture. Workability and consistency are evaluated using a slump test. Ready mix concrete is manufactured off-site and delivered to the construction location by truck.
Prefabrication
In these slides, prefabrication types and methods are integrated through easy language and diagrams.....
Process of manufacture of concrete
VARIOUS STAGES OF MANUFACTURING OF CONCRETE:
BATCHING
MIXING
TRANSPORTING
PLACING
COMPACTING
CURING
FINISHING
Types of Concrete
Types of Concrete in Civil Enginering with their proper;
Application/Uses
Advantages
Disadvantages
earthquake resistant ppt
The document discusses earthquake resistant building design techniques. It begins by defining earthquakes and explaining seismology, the study of seismic waves. It then discusses different types of ground shaking caused by earthquakes like shaking, landslides, and liquefaction. It introduces earthquake zones and describes earthquake resistant design as designing buildings to resist seismic forces. Popular techniques discussed include shear walls, bracing, seismic dampers, isolation, bands, and rollers. Specific techniques like shear walls, bracing, dampers, base isolation, horizontal bands, and expansion joints are explained. Suggestions for earthquake resistant design and construction are provided.
Pile and pile driving equipments
This document summarizes different types of piles used in construction foundations including friction piles, end bearing piles, sheet piles, load piles, and more. It describes how piles can be made of timber, steel, concrete, or composites. The document also outlines various pile driving methods such as drop hammers, single/double acting steam hammers, diesel hammers, vibratory drivers, and safety procedures for pile driving operations.
Earth Compaction Equipment
This document summarizes the main types of earth compaction equipment, including smooth-drum vibratory rollers, tamping rollers, sheep foot rollers, pad-drum vibratory rollers, and pneumatic-tyred rollers. It provides details on the characteristics of each type, such as their weight, speed, effectiveness on different soil types, and how they compact the earth through vibratory action, kneading action of pads or feet, or varying tire pressure. The document aims to inform readers about the different compaction equipment used for tasks like compacting embankments, canals, and trenches.
Prefabrication in construction
Prefabrication is the practice of assembling components of a structure in a factory or other manufacturing site, and transporting them to the construction site where the structure is to be located.
Pile foundation
This document discusses pile foundations. It begins by listing the topics that will be covered, including types of piles, pile spacing, pile caps, load testing, and failures. It then defines a pile foundation as using slender structural members like steel, concrete or timber that are installed in the ground to transfer structural loads to deeper, stronger soil layers. The document goes on to classify piles based on their function, material, and installation method. It describes common pile types such as precast concrete, driven steel, and cast-in-place piles. The document provides details on pile uses, selection factors, and installation procedures.
Equipments used for aggregate production_Advanced Construction Technology (Se...
Crushers
Jaw crusher
Gyratory crusher
Roll crusher
Cone crusher
Impact crusher
2. Ball mill and Rod mill
3. Screens
Revolving screens
Shaking screens
Vibrating screens
4. Log crusher
Pile foundation
Pile foundations are used to transfer structural loads through weak surface soils to stronger deeper soils or bedrock. They consist of long slender members called piles that are driven or bored into the ground. Piles can be made of concrete, steel, or wood. Common types include precast concrete piles, H-piles, and bored piles. Pile foundations are used when subsurface soil cannot support the loads from the structure, in areas with weak or compressible soils, and where deeper soils are needed to support heavy loads. They allow structures to be built in places that could not otherwise support them.
Pre-stressed Concrete
Pre-stressed concrete uses tensioned steel strands or bars to place concrete in compression and improve its tensile strength. There are two main methods - pre-tensioning and post-tensioning. Pre-tensioning tensions the strands before the concrete is poured, while post-tensioning tensions strands inside ducts after the concrete has cured. This compression counteracts tensile and flexural stresses from loads to reduce cracking and increase strength, allowing pre-stressed concrete to be lighter and more durable than reinforced concrete. It is commonly used in bridges, buildings, tanks, and other structures.
compaction equipment
Compacting Equipment
What is the compaction of soil?
Soil compaction
Definition of Compaction
REQUIREMENT OF SOIL COMPACTION
Compacting Equipment for soil
Smooth wheel rollers
Pneumatic rollers
Grid rollers
Tamping rollers
Vibrating rollers
Vibrating plates
Vibratory compaction
Compacting Equipment for concrete
Internal vibrator
Surface vibrator
Platform vibrator
Form vibrator
Table vibrator
Types Of Roller Used For Construction
The document discusses three main types of earth compaction equipment: smooth wheel rollers, sheep foot rollers, and pneumatic-tyred rollers. Smooth wheel rollers are used for ordinary compaction and weigh 5-15 tonnes. Sheep foot rollers are best for deep compaction of clay soils, can weigh over 15 tonnes, and have feet that knead the soil layers. Pneumatic-tyred rollers are most suitable for fine-grained soils and control ground contact pressure through wheel weight and width adjustments.
Pile foundation ppt
This document provides information about pile foundations. Pile foundations are used when the soil cannot support building loads and piles are driven deep into the ground until they reach a bearing stratum. Piles can be made of timber, concrete, or steel. They transfer loads from the building to the stronger subsurface layer. The document discusses different types of piles including end bearing and friction piles and explains how pile caps are reinforced to resist tensile and shear forces from heavy loads. Diagrams show how pile foundations are arranged and how piles transmit loads into the ground.
Methods of concreting
This presentation contains very interesting informations about Pumping,under water concreting,Shotcrete and High Volume Fly Ash Concrete (HVFAC)
Steel trusses
Trusses are commonly used in buildings to span long distances and carry heavy loads. Steel trusses are preferred over wood trusses for their strength, simplicity of installation, and durability without risk of rotting. Various types of trusses include king post, queen post, Howe, Pratt, and fan trusses used in roofs, as well as north light trusses traditionally used for industrial buildings to maximize natural lighting. Larger spans may use tubular steel, quadrangular, or gusset plate connected trusses, while galvanized steel sheets are often used for roofing material.
Residential building construction ppt
This document provides an overview of a multi-story residential building project constructed by the Rajasthan Housing Board. It discusses the project details, company overview, construction materials used including cement, aggregates, reinforcement, foundation preparation, equipment, brick masonry bonds, plastering, and building bylaws. The presentation covers the construction process and materials in detail to familiarize the trainee with multi-story building construction.
Prefabricated Structure and its installation process
Construction industry is growing day by day, whereas free space for material is reducing dayby day. Prefabricated structure provide a way through. Prefabrication is method in which structural members are built at industry and then transferred to site.
Dampers
Dampers are mechanical systems that dissipate earthquake energy by deforming or yielding. They absorb seismic energy, reducing forces on structures and controlling building oscillations. Common types include hydraulic dampers using fluid flow, electro-rheological fluid dampers using variable viscosity fluids, metallic dampers using hysteretic behavior of metals, steel dampers using frame deformation, and friction dampers using clamped friction surfaces. Shape memory alloys also dissipate energy through large strain recovery without damage. Dampers direct earthquake energy to dissipating devices within structures, transforming mechanical energy into heat.
Dewatering techniques
Dewatering is the process of removing water from construction sites to allow excavation work to be done safely and efficiently below the water table. There are several reasons why dewatering is needed, including providing a dry work area, improving stability, and increasing safety. Common dewatering techniques include sump pumping, well points, deep wells, and trenches. Each method has advantages and disadvantages depending on the site conditions and depth of water lowering required. Proper planning and design of a dewatering system is important to effectively control groundwater and allow construction work to progress smoothly.
Prestressed concrete
this presentation is all about prestressing in concrete. Recommended for architecture students or anyone who wishes to know the basics
Diaphragm wall
A diaphragm wall is a reinforced concrete wall constructed underground using a slurry trench technique. A slurry trench involves excavating in a trench filled with a thick, viscous fluid called slurry that balances pressure to prevent trench collapse. Reinforcing cages are lowered into the trench and concrete is poured by tremie to displace the slurry. Diaphragm walls can be built close to existing structures, to great depths, and provide strong, watertight basement walls. However, they require specialized equipment and have high costs.
Self compacting concrete (scc)
Self-compacting concrete was developed in Japan in the 1980s to solve problems with inadequate compaction of traditional concrete. It uses a high paste content and superplasticizers to create a concrete that can flow and consolidate under its own weight without vibration. Tests were developed to evaluate properties like filling ability, passing ability, and segregation resistance. Self-compacting concrete provides benefits like easier placement, faster construction, better surface finish, and improved durability. However, it also has higher costs associated with materials and mix design development.
Earthquake resistant structure
The document discusses earthquakes and techniques for improving earthquake resistance in buildings. It defines earthquakes and describes how they occur due to movement in the earth's crust. It then covers types of earthquakes, causes and effects, seismic waves, and performance and design considerations for improving earthquake resistance. Specific techniques discussed include using shear walls, base isolation methods, energy dissipation devices, and keeping buildings in compression. The conclusion emphasizes following construction standards and periodic training to help assure earthquake-resistant buildings.
Compaction of Concrete & Vibrators.pdf
In these slides necessity and importance of compaction of freshly placed concrete has been discussed in a very concise manner. Also the different types of vibrating equipments used for compaction has also been covered. This is going to of great help to the students and professionals of civil engineering.
Compaction in different type of structure
The basic information about the compaction in different type of structure in building planing and construction.
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Pile and pile driving equipments
This document summarizes different types of piles used in construction foundations including friction piles, end bearing piles, sheet piles, load piles, and more. It describes how piles can be made of timber, steel, concrete, or composites. The document also outlines various pile driving methods such as drop hammers, single/double acting steam hammers, diesel hammers, vibratory drivers, and safety procedures for pile driving operations.
Earth Compaction Equipment
This document summarizes the main types of earth compaction equipment, including smooth-drum vibratory rollers, tamping rollers, sheep foot rollers, pad-drum vibratory rollers, and pneumatic-tyred rollers. It provides details on the characteristics of each type, such as their weight, speed, effectiveness on different soil types, and how they compact the earth through vibratory action, kneading action of pads or feet, or varying tire pressure. The document aims to inform readers about the different compaction equipment used for tasks like compacting embankments, canals, and trenches.
Prefabrication in construction
Prefabrication is the practice of assembling components of a structure in a factory or other manufacturing site, and transporting them to the construction site where the structure is to be located.
Pile foundation
This document discusses pile foundations. It begins by listing the topics that will be covered, including types of piles, pile spacing, pile caps, load testing, and failures. It then defines a pile foundation as using slender structural members like steel, concrete or timber that are installed in the ground to transfer structural loads to deeper, stronger soil layers. The document goes on to classify piles based on their function, material, and installation method. It describes common pile types such as precast concrete, driven steel, and cast-in-place piles. The document provides details on pile uses, selection factors, and installation procedures.
Equipments used for aggregate production_Advanced Construction Technology (Se...
Crushers
Jaw crusher
Gyratory crusher
Roll crusher
Cone crusher
Impact crusher
2. Ball mill and Rod mill
3. Screens
Revolving screens
Shaking screens
Vibrating screens
4. Log crusher
Pile foundation
Pile foundations are used to transfer structural loads through weak surface soils to stronger deeper soils or bedrock. They consist of long slender members called piles that are driven or bored into the ground. Piles can be made of concrete, steel, or wood. Common types include precast concrete piles, H-piles, and bored piles. Pile foundations are used when subsurface soil cannot support the loads from the structure, in areas with weak or compressible soils, and where deeper soils are needed to support heavy loads. They allow structures to be built in places that could not otherwise support them.
Pre-stressed Concrete
Pre-stressed concrete uses tensioned steel strands or bars to place concrete in compression and improve its tensile strength. There are two main methods - pre-tensioning and post-tensioning. Pre-tensioning tensions the strands before the concrete is poured, while post-tensioning tensions strands inside ducts after the concrete has cured. This compression counteracts tensile and flexural stresses from loads to reduce cracking and increase strength, allowing pre-stressed concrete to be lighter and more durable than reinforced concrete. It is commonly used in bridges, buildings, tanks, and other structures.
compaction equipment
Compacting Equipment
What is the compaction of soil?
Soil compaction
Definition of Compaction
REQUIREMENT OF SOIL COMPACTION
Compacting Equipment for soil
Smooth wheel rollers
Pneumatic rollers
Grid rollers
Tamping rollers
Vibrating rollers
Vibrating plates
Vibratory compaction
Compacting Equipment for concrete
Internal vibrator
Surface vibrator
Platform vibrator
Form vibrator
Table vibrator
Types Of Roller Used For Construction
The document discusses three main types of earth compaction equipment: smooth wheel rollers, sheep foot rollers, and pneumatic-tyred rollers. Smooth wheel rollers are used for ordinary compaction and weigh 5-15 tonnes. Sheep foot rollers are best for deep compaction of clay soils, can weigh over 15 tonnes, and have feet that knead the soil layers. Pneumatic-tyred rollers are most suitable for fine-grained soils and control ground contact pressure through wheel weight and width adjustments.
Pile foundation ppt
This document provides information about pile foundations. Pile foundations are used when the soil cannot support building loads and piles are driven deep into the ground until they reach a bearing stratum. Piles can be made of timber, concrete, or steel. They transfer loads from the building to the stronger subsurface layer. The document discusses different types of piles including end bearing and friction piles and explains how pile caps are reinforced to resist tensile and shear forces from heavy loads. Diagrams show how pile foundations are arranged and how piles transmit loads into the ground.
Methods of concreting
This presentation contains very interesting informations about Pumping,under water concreting,Shotcrete and High Volume Fly Ash Concrete (HVFAC)
Steel trusses
Trusses are commonly used in buildings to span long distances and carry heavy loads. Steel trusses are preferred over wood trusses for their strength, simplicity of installation, and durability without risk of rotting. Various types of trusses include king post, queen post, Howe, Pratt, and fan trusses used in roofs, as well as north light trusses traditionally used for industrial buildings to maximize natural lighting. Larger spans may use tubular steel, quadrangular, or gusset plate connected trusses, while galvanized steel sheets are often used for roofing material.
Residential building construction ppt
This document provides an overview of a multi-story residential building project constructed by the Rajasthan Housing Board. It discusses the project details, company overview, construction materials used including cement, aggregates, reinforcement, foundation preparation, equipment, brick masonry bonds, plastering, and building bylaws. The presentation covers the construction process and materials in detail to familiarize the trainee with multi-story building construction.
Prefabricated Structure and its installation process
Construction industry is growing day by day, whereas free space for material is reducing dayby day. Prefabricated structure provide a way through. Prefabrication is method in which structural members are built at industry and then transferred to site.
Dampers
Dampers are mechanical systems that dissipate earthquake energy by deforming or yielding. They absorb seismic energy, reducing forces on structures and controlling building oscillations. Common types include hydraulic dampers using fluid flow, electro-rheological fluid dampers using variable viscosity fluids, metallic dampers using hysteretic behavior of metals, steel dampers using frame deformation, and friction dampers using clamped friction surfaces. Shape memory alloys also dissipate energy through large strain recovery without damage. Dampers direct earthquake energy to dissipating devices within structures, transforming mechanical energy into heat.
Dewatering techniques
Dewatering is the process of removing water from construction sites to allow excavation work to be done safely and efficiently below the water table. There are several reasons why dewatering is needed, including providing a dry work area, improving stability, and increasing safety. Common dewatering techniques include sump pumping, well points, deep wells, and trenches. Each method has advantages and disadvantages depending on the site conditions and depth of water lowering required. Proper planning and design of a dewatering system is important to effectively control groundwater and allow construction work to progress smoothly.
Prestressed concrete
this presentation is all about prestressing in concrete. Recommended for architecture students or anyone who wishes to know the basics
Diaphragm wall
A diaphragm wall is a reinforced concrete wall constructed underground using a slurry trench technique. A slurry trench involves excavating in a trench filled with a thick, viscous fluid called slurry that balances pressure to prevent trench collapse. Reinforcing cages are lowered into the trench and concrete is poured by tremie to displace the slurry. Diaphragm walls can be built close to existing structures, to great depths, and provide strong, watertight basement walls. However, they require specialized equipment and have high costs.
Self compacting concrete (scc)
Self-compacting concrete was developed in Japan in the 1980s to solve problems with inadequate compaction of traditional concrete. It uses a high paste content and superplasticizers to create a concrete that can flow and consolidate under its own weight without vibration. Tests were developed to evaluate properties like filling ability, passing ability, and segregation resistance. Self-compacting concrete provides benefits like easier placement, faster construction, better surface finish, and improved durability. However, it also has higher costs associated with materials and mix design development.
Earthquake resistant structure
The document discusses earthquakes and techniques for improving earthquake resistance in buildings. It defines earthquakes and describes how they occur due to movement in the earth's crust. It then covers types of earthquakes, causes and effects, seismic waves, and performance and design considerations for improving earthquake resistance. Specific techniques discussed include using shear walls, base isolation methods, energy dissipation devices, and keeping buildings in compression. The conclusion emphasizes following construction standards and periodic training to help assure earthquake-resistant buildings.
What's hot (20)
Equipments used for aggregate production_Advanced Construction Technology (Se...
Equipments used for aggregate production_Advanced Construction Technology (Se...
Prefabricated Structure and its installation process
Prefabricated Structure and its installation process
Similar to construction equipment(VIBRATOR)
Compaction of Concrete & Vibrators.pdf
In these slides necessity and importance of compaction of freshly placed concrete has been discussed in a very concise manner. Also the different types of vibrating equipments used for compaction has also been covered. This is going to of great help to the students and professionals of civil engineering.
Compaction in different type of structure
The basic information about the compaction in different type of structure in building planing and construction.
Concrete technology(methods of compaction)
The document discusses two methods of compacting concrete - hand compaction and compaction using vibration. Hand compaction involves rodding, ramming, or tamping and is used for ordinary structures with workable concrete mixes. Compaction using vibration allows for stiffer concrete mixes with lower water-cement ratios, increasing strength. Internal vibrators are most commonly used to vibrate freshly placed concrete and remove air pockets. Other vibrator types include formwork vibrators, table vibrators, and platform vibrators. Proper compaction is important to maximize concrete strength and durability by minimizing voids.
Vibrators
This document discusses different types of vibrators used for consolidating concrete, including internal, external, surface, and vibrating table vibrators. It describes the purpose, components, frequency, radius of action, and applications of each vibrator type. Inadequate consolidation can result in defects like honeycombing, air voids, streaking, and cracking. The document provides details on immersion vibrators, external form vibrators, surface pan vibrators, and vibrating tables.
Concrete compaction [compatibility mode]
Concrete Production, Compaction of Concrete, Reducing Porosity in Concrete, compacting concrete, concrete compaction
3 hayzi.pptx
This document provides information on tunneling, foundation, and concreting equipment. It discusses various tunneling methods such as full-face excavation, heading and benching, and the drift method. It describes tunneling equipment like jumbos, mechanical moles, and mucking machines. It also covers foundation drilling equipment including jackhammers, wagon drills, track-mounted drills, and rotary-percussion drills. Finally, it discusses concrete equipment for batching, mixing, transporting, placing, consolidating, and curing concrete.
A Review Paper on Re-vibration of Fly Ash Concrete
This document summarizes a research paper that studied the effect of re-vibration on fly ash concrete. It found that re-vibrating concrete after initial vibration at time intervals between 30 minutes to 2 hours improved properties like compressive strength, surface hardness, and permeability. The maximum compressive strength was achieved with re-vibration after 2 hours. Re-vibration helps fill voids, removes air, and rearranges aggregates, leading to stronger, denser concrete. While re-vibration is beneficial if done properly, disturbing partially set concrete can reduce strength. The study concluded that fly ash concrete can provide environmental and strength benefits when re-vibrated at an early age.
Vibrators
Assalam U Alikum.
In these slides, discussion is about vibrators. The sequence of presentation is ,
1- Introduction of vibration.
2- Introduction of vibrator.
3- Function of vibrator.
4- Types of vibrator.
5- Conclusion.
I hope up enjoy our slides and soon upload next slides.
In Sha Allah.
Jazak Allah for reading.
Assalam U Alikum Wa Rehmatullah I Wa Barakaatuhu.
Compaction of concrete
This document discusses properties of concrete and compaction methods. It covers the importance of compacting concrete to remove air voids and increase strength. Methods of compaction include manual techniques like rodding and tamping as well as mechanical vibration using internal and external vibrators. Improper vibration can lead to defects like honeycombing or segregation. Newer techniques like self-compacting concrete use superplasticizers to reduce the need for external vibration during pouring and placement.
Formwork-Types and Their Advantages
Formwork: Introduction, Types, Advantages of Different Types of Formworks, Images for different Types of Formworks, Manufacturers for Formwork...
Mechanical Compaction of Concrete
This presentation is about the Compaction it's stages, its importance as well as Different types of Vibrators like Surface Vibrator, Beam Screed Vibrator, Roller Screed Vibrator, Plate Vibrator, Table Vibrator, their use, why to vibrate concrete, whats the effect of over vibration using needle vibrator in RCC and conclusion.
Pile boring/ Driving Equipment, Concrete Batching plant, Tunnel Boring Machines
The document summarizes information about various construction equipment and methods, including pile driving equipment, concrete batching plants, and tunnel boring machines. It describes different types of piles and pile driving hammers. It provides details on the components and functioning of concrete batching plants and tunnel boring machines. The key methods of tunnel construction discussed are tunnel boring machine (TBM) method and drill-and-blast method.
Speedy construction
The document discusses different types of reinforcement used in concrete construction including hot rolled deformed bars, mild steel plain bars, cold worked steel reinforcement, and prestressing steel. It also discusses ready mixed concrete (RMX), the working process of RMX, advantages and disadvantages compared to site mixed concrete. The document provides information on major RMX companies. It also discusses insulating concrete formwork (ICF), crosswall construction formwork, and photos of ICF site installation.
TOOLS AND MACHINERY USE FOR THE CONCRETE PRODUCTION AND SUPPLY
The document discusses various tools and machinery used in concrete construction. It describes hand mixing tools like measuring boxes, boards, shovels and buckets. It also describes different types of concrete mixers like twin shaft mixers, vertical axis mixers, and drum mixers. Transportation equipment like pans, chutes, belt conveyors, and dump trucks are mentioned. Compaction tools include internal vibrators, form vibrators, surface vibrators, and vibrating tables. Quality checking equipment includes compressive strength testing machines.
Acm Unit 1
Pre-stressed concrete uses tensioned steel cables or rods to put concrete members under compression and increase their strength. It allows for longer spans than reinforced concrete. There are three methods: pre-tensioned concrete uses tensioned tendons before pouring concrete; bonded post-tensioned concrete uses tendons tensioned after pouring; unbonded post-tensioned concrete uses individually coated tendons without bonding to the concrete. Prestressed concrete has advantages like less cracking and material efficiency but also disadvantages like higher costs.
Machines for manufacture of concrete (CIVIL ENGINEERING) ABM SUBJEST
This document discusses different types of machines used for concrete production. There are concrete plants located near construction sites or on-site. Concrete mixers come in various sizes, from small portable mixers to large stationary mixers. Mixers can be simple batch mixers that mix one batch at a time or continuous mixers that constantly produce concrete. Proper maintenance of concrete production equipment is important for safety and equipment life. Regular maintenance helps eliminate hazards while lack of maintenance can cause accidents.
Foam Concrete.ppt
Foam concrete is a lightweight concrete made by mixing cement paste with synthetic foam. It has a range of densities from 400-1600 kg/m3 depending on its intended use such as gap filling, partitions, or structural works. Advantages include being lightweight, free flowing to fill all voids, impermeable, insulating, durable, and cost effective compared to other materials. It can be used for void filling, thermal insulation, sunken slabs, trench reinstatement, and as a road sub-base. Foam concrete is produced by injecting foam generated using a foam generator and foaming agent into a cement slurry in a transit mixer.
simplex infrastructure
The document provides information about pile foundations and their construction process. It states that pile foundations involve long concrete cylinders that are driven into the ground to support structures built above weak soil layers. It describes the two main types of pile foundations as end bearing piles and friction piles. It then explains the multi-step process of constructing pile foundations which involves casting piles on site, using a pile driver to vertically insert the piles into the ground until refusal.
IT PPT(0).pdf
This document describes the process for constructing reinforced concrete columns, slabs, and beams for a building. It discusses setting out column positions with a total station, forming columns with domino shuttering panels, tying rebar with biscuits and tie wire, pouring concrete of various grades, creating slab formwork with acrow-props and domino boards, laying rebar on chairs with biscuits, pouring and curing concrete, and building beam formwork with domino boards supported by woods and tie rods before bending and placing rebar and pouring concrete. The document provides details on the materials, equipment, and steps used at each stage of construction.
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A Review Paper on Re-vibration of Fly Ash Concrete
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Understanding Inductive Bias in Machine Learning
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Advanced control scheme of doubly fed induction generator for wind turbine us...
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Embedded machine learning-based road conditions and driving behavior monitoring
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
International Conference on NLP, Artificial Intelligence, Machine Learning an...
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
5214-1693458878915-Unit 6 2023 to 2024 academic year assignment (AutoRecovere...
Bigdata of technology
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODEL
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
accuracy rate of 99.50%.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
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our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
TIME DIVISION MULTIPLEXING TECHNIQUE FOR COMMUNICATION SYSTEM
Time Division Multiplexing (TDM) is a method of transmitting multiple signals over a single communication channel by dividing the signal into many segments, each having a very short duration of time. These time slots are then allocated to different data streams, allowing multiple signals to share the same transmission medium efficiently. TDM is widely used in telecommunications and data communication systems.
### How TDM Works
1. **Time Slots Allocation**: The core principle of TDM is to assign distinct time slots to each signal. During each time slot, the respective signal is transmitted, and then the process repeats cyclically. For example, if there are four signals to be transmitted, the TDM cycle will divide time into four slots, each assigned to one signal.
2. **Synchronization**: Synchronization is crucial in TDM systems to ensure that the signals are correctly aligned with their respective time slots. Both the transmitter and receiver must be synchronized to avoid any overlap or loss of data. This synchronization is typically maintained by a clock signal that ensures time slots are accurately aligned.
3. **Frame Structure**: TDM data is organized into frames, where each frame consists of a set of time slots. Each frame is repeated at regular intervals, ensuring continuous transmission of data streams. The frame structure helps in managing the data streams and maintaining the synchronization between the transmitter and receiver.
4. **Multiplexer and Demultiplexer**: At the transmitting end, a multiplexer combines multiple input signals into a single composite signal by assigning each signal to a specific time slot. At the receiving end, a demultiplexer separates the composite signal back into individual signals based on their respective time slots.
### Types of TDM
1. **Synchronous TDM**: In synchronous TDM, time slots are pre-assigned to each signal, regardless of whether the signal has data to transmit or not. This can lead to inefficiencies if some time slots remain empty due to the absence of data.
2. **Asynchronous TDM (or Statistical TDM)**: Asynchronous TDM addresses the inefficiencies of synchronous TDM by allocating time slots dynamically based on the presence of data. Time slots are assigned only when there is data to transmit, which optimizes the use of the communication channel.
### Applications of TDM
- **Telecommunications**: TDM is extensively used in telecommunication systems, such as in T1 and E1 lines, where multiple telephone calls are transmitted over a single line by assigning each call to a specific time slot.
- **Digital Audio and Video Broadcasting**: TDM is used in broadcasting systems to transmit multiple audio or video streams over a single channel, ensuring efficient use of bandwidth.
- **Computer Networks**: TDM is used in network protocols and systems to manage the transmission of data from multiple sources over a single network medium.
### Advantages of TDM
- **Efficient Use of Bandwidth**: TDM all
Literature Review Basics and Understanding Reference Management.pptx
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
学校原版美国波士顿大学毕业证学历学位证书原版一模一样
原版一模一样【微信：741003700 】【美国波士顿大学毕业证学历学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
A review on techniques and modelling methodologies used for checking electrom...
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
官方认证美国密歇根州立大学毕业证学位证书原版一模一样
原版一模一样【微信：741003700 】【美国密歇根州立大学毕业证学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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construction equipment(VIBRATOR)
- 1. Title
- 3. I. A concrete vibrator is a construction tool typically used on concrete pouring sites. II. The vibrators are used to ensure that the pour is free of air bubbles and are even. This is so that the concrete remains strong and has a smooth finish even after removal of the form work. III. It is not exactly necessary for small jobs but it can be essential for large load bearing projects.
- 4. IV. The machines range in sizes from small battery powered wands to larger plug in versions that are used on very deep pours. V. Attachments are selected on the basis of depth and type of concrete used during the concrete pour. VI. A typical concrete vibrator utilizes an off-center weight that spins at 10000 times a minute
- 5. They are also called im m e rsio n, po ke r o r ne e dle vibrato rs. They essentially consist of a power unit and a long flexible tube at the end of which a vibrating head is attached. Power is provided by electric motor, compressed air or
- 6. They are clamped to the formwork horizontally and vertically at suitable spacing not exceeding 90 cm in either direction As the work progress they are shifted. They vibrate the concrete
- 7. They are also called screed or pan vibrators. They are clamped to the screed. They vibrate the concrete from the surface at the time when screeding (striking off) of the concrete is carried out. They are effective only if depth of concrete is upto 20 cm.
- 8. if the depth is more they can be used in combination with internal vibrators. They are used for long horizontal surfaces such as pavements and slabs.
- 9. These are rigidly built steel platforms mounted on steel springs and driven by electric motors. The concrete is placed in moulds mounted on the platforms and securely clamped to the vibrating table, so that mould and concrete vibrate in union. Vibrating tables are used for compacting stiff and harsh mixes used in precast structural members in factories and laboratory specimens.
- 11. RESULT DUE TO IMPROPERUSE