Industrial Flooring By Tremix vacuum system
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TREMIX; Special concrete floor surface harden by admixtures and dewatering used in industrial facilities DEWATERING ; Dewatering is the removal of water from solid material by wet classification and filtration or similar solid liquid separation prepared by Hebin J Chiriyankandath Jyothi Engineering College Thrissur Kerala India seminar topic for civil engineering students
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Industrial flooring by tremix vacuum system
The document describes industrial flooring using the Tremix vacuum system. It discusses the materials required, including a vacuum dewatering pump, floater machine, Tremix skin, and double beam screed vibrator. The concept involves using vacuum dewatering to remove excess water from freshly placed concrete, reducing the water-cement ratio and improving properties. The procedure involves laying guide rails, pouring and vibrating concrete, dewatering with a vacuum pump, floating, and final finishing. The Tremix system results in a stronger, higher quality industrial concrete floor.
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This document provides an overview of vacuum dewated flooring (VDF). VDF is a flooring technique that uses vacuum pressure to remove water from freshly laid concrete, resulting in a stronger and harder floor. The document defines VDF, outlines its benefits such as increased strength and wear resistance. It describes the VDF process which involves laying concrete, vibrating it, placing a suction mat to remove water, and finishing the surface. Equipment for VDF including screed vibrators, vacuum pumps, and power floats are also detailed. Advantages like early strength and reduced cracking are contrasted with disadvantages like higher initial costs. Applications of VDF in industrial, transportation, and hydraulic structures are listed. New dewatering
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Causes and prevention of cracks in buildings
This document discusses cracks in buildings, including their causes and prevention. It begins by defining cracks and noting the importance of understanding crack causes and remedies. Structural cracks arise from design or loading issues, while non-structural cracks are due to factors like moisture, temperature changes, or chemical reactions. Common causes of cracks include structural deficiencies, temperature/shrinkage effects, poor workmanship, and settlement. The document outlines various crack types and investigation methods. It then discusses prevention techniques before concluding that cracks should be avoided in important buildings due to effects on aesthetics and leaks.
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Industrial flooring by tremix vacuum system
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Vacuum dewatering is a process that removes excess water from freshly poured concrete to achieve an ideal water-cement ratio and improved properties. Concrete is poured and a vacuum pump then removes 15-25% of the water through a suction mat and filter pads. This results in higher strength, less cracking and shrinkage, improved abrasion resistance, and a smooth, level surface. Vacuum dewatering is commonly used for industrial and commercial floors that require high durability.
Modular Volumetric Construction
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Waterproofing is done to prevent water from penetrating buildings. It involves applying membrane barriers like bitumen or PVC during construction. It can also be done later to address leaks. Common areas waterproofed include bathrooms, terraces, basements, and roofs. Materials used include cement, sand, metal chips, brick bats, and waterproofing chemicals. Techniques include applying cement coats sloped away from the building, with brick bats or tiles in between coats. Thorough preparation and multiple curing coats are important for effective waterproofing.
Underwater construction
Underwater construction involves building structures where foundations or parts will lie underwater. It presents difficulties due to depth and water conditions. Common underwater construction activities include bridges, dams, utilities, and industrial projects. Construction techniques include both wet construction using divers and dry construction using caissons and cofferdams to create a dry work environment. Caissons are permanent watertight structures sunk into place while cofferdams are temporary structures that can be pumped out. Concrete is often placed underwater using a tremie pipe method to displace water and prevent washout of material.
Bacterial concrete
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Polymer concrete
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Light weight concrete
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No fines concrete
No fines concrete, also known as pervious concrete, is a special type of concrete that contains no fine aggregates. It has a high void content of 20-35% which allows water to pass through easily. Due to its porous nature, no fines concrete has applications in structures like parking lots, pavements, and drainage systems where permeability is important. It also provides benefits like lower costs, better insulation, and reduced stormwater runoff compared to regular concrete.
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Guniting is a process that uses a cement-sand mixture projected at high pressure through a cement gun to repair damaged concrete surfaces. The mixture, usually in a 1:3 cement to sand ratio, is deposited on the surface under 20-30 N/cm^2 of pressure. Guniting can be used on vertical, overhead, and horizontal surfaces to restore concrete damaged by corrosion or inferior work. It provides an impervious layer and high compressive strength of 56-70 N/mm^2.
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The document discusses various aspects of waterproofing systems. It explains that conventional waterproofing involves applying membrane barriers to prevent water passage. It also notes that quality waterproofing is essential to preserve building envelope water-tightness, as below-grade areas and plaza decks experience hydrostatic pressure. The document then provides definitions for waterproofing versus damp-proofing and discusses different waterproofing materials and methods, including sheet membranes, liquid systems, bentonite, metal oxide, and cementitious options. It emphasizes that substrate preparation and multiple protective layers are important for effective waterproofing.
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Understanding waterproofing
Waterproofing prevents the passage of liquid water through structures and is important to apply where hydrostatic pressure may occur. It can be applied to the positive or negative side of structures. Common types include sheet membranes, liquid waterproofing, and bentonite or cementitious waterproofing. The document discusses definitions of waterproofing versus damp-proofing, why waterproofing is necessary to prevent structural damage, where and how water can enter structures, and appropriate locations and types of waterproofing applications.
Waterproofing copmound
Waterproofing describes making an object waterproof or water-resistant.
Building water-proofing is a process which is designed to prevent water from penetrating a building.
Usually extensive waterproofing measures are added to a building at the time of construction, to provide moisture control from the start
Waterproofing may also be done after a building is built, to address problems as they emerge or as part of a building retrofit
Internal areas that are waterproofed include :
bathrooms,
shower recesses,
laundries
toilets.
Waterproofing methods & materials used in construction
Waterproofing is important for construction to prevent water damage. It involves making structures water resistant through various methods and materials. Common waterproofing methods include cementitious waterproofing for interior areas, liquid waterproofing membranes for flexible coverage, and bituminous membranes and coatings for roofs and foundations. Proper waterproofing protects buildings from leakage, deterioration and mold, while also preventing health issues and unnecessary repair costs. Issues like cracks, poor installation, and lack of maintenance can compromise waterproofing and should be addressed.
Advanced concrete technology
The document discusses the process of manufacturing concrete. It begins by outlining the key ingredients in ordinary Portland cement - lime, silica, alumina, and iron oxide. These ingredients are heated to high temperatures in a kiln to form complex compounds. There are wet, dry, and semi-dry processes for manufacturing cement, which differ in whether raw materials are mixed dry or as a slurry. In the wet process, materials are ground into a slurry with water before being fed into a rotating kiln where they fuse at 1500°C to form clinker. The clinker is then cooled, ground, and gypsum is added to produce cement. Hydration occurs when cement mixes with water, forming hydrated compounds
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This document discusses self-compacting concrete (SCC), which is a highly fluid concrete that can consolidate under its own weight without vibration. SCC was developed in Japan in the 1980s to create durable concrete structures independent of construction workers' skill levels. The document outlines the key components of SCC including cement, aggregates, water, and chemical admixtures. It also describes various tests used to evaluate the filling ability, passing ability, and segregation resistance of SCC, such as slump flow, L-box, and V-funnel tests. The benefits and challenges of using SCC are noted. Examples of large infrastructure projects utilizing SCC include bridges and the Delhi metro system.
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Base isolation is a seismic protection system that separates a structure from its foundation, allowing the structure to remain largely motionless during an earthquake by absorbing shock through devices like friction pendulums and elastomeric bearings. There are various types of base isolators including low-damping rubber bearings, lead-rubber bearings, and sliding systems. Base isolation is most suitable for low to medium-rise buildings founded on firm soil, as it reduces seismic forces and prevents damage by permitting the ground and structure to move independently.
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The document discusses high density concrete, its components, types of aggregates used, admixtures, applications, advantages and disadvantages. High density concrete has a density over 2600 kg/m3 and offers greater strength than regular concrete. Its main components are cement, water, aggregates and admixtures. Natural aggregates come from iron ores while man-made aggregates include iron shots, chilcon and synthetic aggregates. Admixtures like water reducers are used to increase workability and reduce cement and water requirements. High density concrete has applications in radiation shielding, precast blocks, bridges and more due to its high strength and durability.
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.
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Construction of diaphragm wall
This document provides information on diaphragm walls, including:
- Diaphragm walls are reinforced concrete walls constructed using the slurry trench technique, reaching depths of up to 50m.
- They are commonly used as retaining walls, for supporting deep excavations, and as basement or underground structure walls.
- Construction involves excavating trenches using bentonite slurry, installing reinforcement cages, and pouring concrete to form wall panels either successively or alternately.
- Proper specifications are required for bentonite slurry, reinforcement, and construction methods to ensure continuity and water-tightness of the completed diaphragm wall structure.
Vacuum concrete
Vacuum concrete is the type of concrete in which the excess water is removed for improving concrete strength.
The water is removed by use of vacuum mats connected to a vacuum pump.
The main aim of this technique is to extract extra water from concrete surface using vacuum dewatering.
vacuumconcrete- 190731131507.pdf
Vacuum concrete is a technique that improves concrete strength by removing excess water using vacuum mats connected to a pump. The water is extracted from the surface of fresh concrete to reduce the water-cement ratio and increase strength and durability. The process involves placing concrete with good workability and then applying a vacuum through porous mats to remove water from the top depths, leaving a higher density and lower permeability concrete surface with less need for formwork time.
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Underwater construction
Underwater construction involves building structures where foundations or parts will lie underwater. It presents difficulties due to depth and water conditions. Common underwater construction activities include bridges, dams, utilities, and industrial projects. Construction techniques include both wet construction using divers and dry construction using caissons and cofferdams to create a dry work environment. Caissons are permanent watertight structures sunk into place while cofferdams are temporary structures that can be pumped out. Concrete is often placed underwater using a tremie pipe method to displace water and prevent washout of material.
Bacterial concrete
Bacteria-based self-healing concrete uses dormant calcium-precipitating bacteria encapsulated during mixing. When cracks form and water enters, the bacteria activate, metabolize nutrients, and precipitate calcium carbonate to seal cracks. Testing shows bacterial concrete has higher strength and crack-healing ability compared to normal concrete. While increasing durability, applications in construction could lower costs and improve sustainability over time. Further research is still needed to optimize the technology for practical and economic feasibility at scale.
Polymer concrete
Polymer concrete is a part of group of concretes that use polymers to supplement or replace cement as a binder.
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No fines concrete
No fines concrete, also known as pervious concrete, is a special type of concrete that contains no fine aggregates. It has a high void content of 20-35% which allows water to pass through easily. Due to its porous nature, no fines concrete has applications in structures like parking lots, pavements, and drainage systems where permeability is important. It also provides benefits like lower costs, better insulation, and reduced stormwater runoff compared to regular concrete.
GUNITING
Guniting is a process that uses a cement-sand mixture projected at high pressure through a cement gun to repair damaged concrete surfaces. The mixture, usually in a 1:3 cement to sand ratio, is deposited on the surface under 20-30 N/cm^2 of pressure. Guniting can be used on vertical, overhead, and horizontal surfaces to restore concrete damaged by corrosion or inferior work. It provides an impervious layer and high compressive strength of 56-70 N/mm^2.
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This document provides information on concrete admixtures, including definitions and uses. It discusses different types of admixtures such as air-entraining agents, water reducers, plasticizers, superplasticizers, retarders, accelerators, and damp proofing admixtures. For each type of admixture, the document outlines their properties, mechanisms, advantages, and applications in concrete mixing and construction. In addition, the document covers curing compounds and polymer bonding agents used for curing concrete and bonding new concrete to existing structures.
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The document discusses various aspects of waterproofing systems. It explains that conventional waterproofing involves applying membrane barriers to prevent water passage. It also notes that quality waterproofing is essential to preserve building envelope water-tightness, as below-grade areas and plaza decks experience hydrostatic pressure. The document then provides definitions for waterproofing versus damp-proofing and discusses different waterproofing materials and methods, including sheet membranes, liquid systems, bentonite, metal oxide, and cementitious options. It emphasizes that substrate preparation and multiple protective layers are important for effective waterproofing.
Self curing concrete
This document discusses self-curing concrete as an alternative to traditional water curing methods. Self-curing concrete contains chemical compounds that restrict the mixing water from leaving the curing concrete, allowing hydration to continue. This eliminates the need for external water curing in remote areas or projects where water access is limited. Self-curing concrete provides benefits like higher strength, durability, and resistance to cracking compared to uncured concrete through its internal curing mechanism. It is a useful technique when traditional water curing is not feasible or economical.
Understanding waterproofing
Waterproofing prevents the passage of liquid water through structures and is important to apply where hydrostatic pressure may occur. It can be applied to the positive or negative side of structures. Common types include sheet membranes, liquid waterproofing, and bentonite or cementitious waterproofing. The document discusses definitions of waterproofing versus damp-proofing, why waterproofing is necessary to prevent structural damage, where and how water can enter structures, and appropriate locations and types of waterproofing applications.
Waterproofing copmound
Waterproofing describes making an object waterproof or water-resistant.
Building water-proofing is a process which is designed to prevent water from penetrating a building.
Usually extensive waterproofing measures are added to a building at the time of construction, to provide moisture control from the start
Waterproofing may also be done after a building is built, to address problems as they emerge or as part of a building retrofit
Internal areas that are waterproofed include :
bathrooms,
shower recesses,
laundries
toilets.
Waterproofing methods & materials used in construction
Waterproofing is important for construction to prevent water damage. It involves making structures water resistant through various methods and materials. Common waterproofing methods include cementitious waterproofing for interior areas, liquid waterproofing membranes for flexible coverage, and bituminous membranes and coatings for roofs and foundations. Proper waterproofing protects buildings from leakage, deterioration and mold, while also preventing health issues and unnecessary repair costs. Issues like cracks, poor installation, and lack of maintenance can compromise waterproofing and should be addressed.
Advanced concrete technology
The document discusses the process of manufacturing concrete. It begins by outlining the key ingredients in ordinary Portland cement - lime, silica, alumina, and iron oxide. These ingredients are heated to high temperatures in a kiln to form complex compounds. There are wet, dry, and semi-dry processes for manufacturing cement, which differ in whether raw materials are mixed dry or as a slurry. In the wet process, materials are ground into a slurry with water before being fed into a rotating kiln where they fuse at 1500°C to form clinker. The clinker is then cooled, ground, and gypsum is added to produce cement. Hydration occurs when cement mixes with water, forming hydrated compounds
Seminar on Self Compacting Concrete SCC (special concrete)
This document discusses self-compacting concrete (SCC), which is a highly fluid concrete that can consolidate under its own weight without vibration. SCC was developed in Japan in the 1980s to create durable concrete structures independent of construction workers' skill levels. The document outlines the key components of SCC including cement, aggregates, water, and chemical admixtures. It also describes various tests used to evaluate the filling ability, passing ability, and segregation resistance of SCC, such as slump flow, L-box, and V-funnel tests. The benefits and challenges of using SCC are noted. Examples of large infrastructure projects utilizing SCC include bridges and the Delhi metro system.
Base isolation
Base isolation is a seismic protection system that separates a structure from its foundation, allowing the structure to remain largely motionless during an earthquake by absorbing shock through devices like friction pendulums and elastomeric bearings. There are various types of base isolators including low-damping rubber bearings, lead-rubber bearings, and sliding systems. Base isolation is most suitable for low to medium-rise buildings founded on firm soil, as it reduces seismic forces and prevents damage by permitting the ground and structure to move independently.
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This document discusses concrete construction in extreme hot and cold weather conditions in India. It addresses the challenges of hot weather concreting such as increased water demand, accelerated slump loss, and increased risk of plastic shrinkage cracking. Recommendations for hot weather concreting include cooling the concrete, reducing placement time, and prompt curing. Cold weather concreting risks include reduced strength if water freezes within concrete. Recommendations include protecting concrete from freezing, using accelerants, and maintaining minimum curing temperatures. Proper planning, materials, and protection methods can help produce quality concrete despite temperature extremes.
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The document discusses high density concrete, its components, types of aggregates used, admixtures, applications, advantages and disadvantages. High density concrete has a density over 2600 kg/m3 and offers greater strength than regular concrete. Its main components are cement, water, aggregates and admixtures. Natural aggregates come from iron ores while man-made aggregates include iron shots, chilcon and synthetic aggregates. Admixtures like water reducers are used to increase workability and reduce cement and water requirements. High density concrete has applications in radiation shielding, precast blocks, bridges and more due to its high strength and durability.
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.
Ferrocement ppt
Ferrocement is a thin reinforced concrete made of wire mesh and cement mortar. It was introduced in 1943 and offers high strength and flexibility compared to conventional concrete. Ferrocement consists of thin layers of wire mesh embedded in and covered by a sand-cement mortar mix, with a typical ratio of 5% wire mesh to 95% mortar. It can be formed into various shapes by hand or machine and has applications in construction, agriculture, transportation and more due to its strength, versatility and affordability.
Construction of diaphragm wall
This document provides information on diaphragm walls, including:
- Diaphragm walls are reinforced concrete walls constructed using the slurry trench technique, reaching depths of up to 50m.
- They are commonly used as retaining walls, for supporting deep excavations, and as basement or underground structure walls.
- Construction involves excavating trenches using bentonite slurry, installing reinforcement cages, and pouring concrete to form wall panels either successively or alternately.
- Proper specifications are required for bentonite slurry, reinforcement, and construction methods to ensure continuity and water-tightness of the completed diaphragm wall structure.
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vacuumconcrete- 190731131507.pdf
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Industrial Flooring By Tremix vacuum system
- 1. INDUSTRIAL FLOORING BY TREMIX VACUUM SYSTEM GUIDED BY, Asst prof:NEERAJA.P.G Submitted By, HEBIN J CHIRIYANKANDATH
- 2. TERMINOLOGY TREMIX; Special concrete floor surface harden by admixtures and dewatering used in industrial facilities DEWATERING ; Dewatering is the removal of water from solid material by wet classification and filtration or similar solid liquid separation
- 3. OBJECTIVES Achieving lower water cement ratio Increase compressive strength Elimination of curling Improve wear resistance Improve water resistance
- 4. PROCEDURE Preparation of sub base Divide flooring area into panels Preparation of frame work using steel channels
- 5. Mix design of concrete Placing of concrete and compacting Levelling and compaction by double beam screed vibrator
- 6. Dewatering process 1. The filter pads are placed and proper sealing ensured 2. The top cover is unrolled over the filter pads 3. The top cover is connected to the suction hose of the vacuum pump and water is removed
- 8. Floating operation Trowelling operation Floating & Troweling take place right after dewatering This makes the cement more compact and enabling to generate a very smooth finish.
- 9. W Floater machine Trowelling operation curing curing is a main process in concreting. But compare to other concrete in this tremix concrete curing is less
- 10. STAGES OF TREMIX VACUUM SYSTEM Suction mat
- 11. ADVANTAGES Reduced maintenance cost Earlier utilization of floors Lower water permeability Minimized crack formation Minimum dusting
- 12. Performance analysis The final strength achieved by ordinary concrete on 28 day will be achieved by tremix concrete by initial day itself. On further curing the vacuum concrete achieves compressive strength far more than ordinary concrete. All layers of the concrete get same strength Compressive strength using vacuum system
- 13. APPLICATIONS Industrial flooring Railway platforms Godown , warehouses Canals Airport Runways
- 14. CONCLUSION High initial slump can be used, during concrete pouring . Better workability than normal concrete. Lowering water cement ratio leads increase wear resistance, compressive strength and minimum water permeability. vacuum treatment reduce water content 15- 25% Continuous cracking is generally reduced
- 15. REFERNCE Vacuum dewatering: new way for concrete flooring by tremix method .Vivekkumar patel, Jayeshkumar Pitroda ,J.J.Bhavsar Study a new technique for producing Vacuum- dewatered concrete. Haitham H. Saeed, Anas A. Ezzulddin www.aquariustech.net
- 16. THANK YOU