Concrete
The word concrete comes from the Latin word "concretus". Which means compact.Now a days concrete is most common and necessary things in our life.
The history of cementing materials together goes back to the time when prehistoric man prepare his cave to build shelter.
He used mud and clay to fill the gap between stone. To keep out the wind and cold.
Later the Assyrians and Babylonians used clay as their bonding substance and straw to make a shape.
The Egyptians used lime and gypsum and crushed stone to create a material that would harden even better.
Concrete
The word concrete comes from the Latin word "concretus". Which means compact.Now a days concrete is most common and necessary things in our life.
The history of cementing materials together goes back to the time when prehistoric man prepare his cave to build shelter.
He used mud and clay to fill the gap between stone. To keep out the wind and cold.
Later the Assyrians and Babylonians used clay as their bonding substance and straw to make a shape.
The Egyptians used lime and gypsum and crushed stone to create a material that would harden even better.
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
Concrete is one of the most durable building materials. It provides superior fire resistance compared with wooden construction and gains strength over time. Structures made of concrete can have a long service life. Concrete is used more than any other manmade material in the world. As of 2006, about 7.5 billion cubic meters of concrete are made each year, more than one cubic meter for every person on Earth.
Purpose of brick bonds
Types of bonds in Brick Masonry in Civil Engineering
Types of bonds in brick masonry with Application
Advantages and Disadvantages of each type
Introduction to Interlocking bricks.
Composition and Manufacturing of Interlocking bricks.
Interlocking Bricks with their application in Civil Engineering.
Types/Design of Interlocking bricks used in Civil Engineering.
Advantages and Disadvantages of Interlocking bricks.
Arrays in C++.
Purpose of Array.
Declaration of an Array.
Accessing Array Elements.
Example CPP programs using Array.
Multi-dimensional Array.
Advantages and Disadvantages of an Array.
Recursion in C++.
Purpose of recursion.
How recursion works.
Stack Overflow error in recursion.
Types of recursion:
1. Direct recursion.
2. Indirect recursion.
Advantages and Disadvantages of recursion.
Recursion example in C++ program.
Rotameter in Fluid Mechanics.
Rotameter, Variable Area Meter.
Rotameter Construction.
Working Principle of Rotameter.
Apparatus Description.
Formula for calculations.
Lab observations and Calculations.
Advantages and Disadvantages of Rotameter.
Precautions.
Rectangular and Circular underground water tank Maliha Mehr
Rectangular and Circular underground water tank comparison.
Brief comparison of properties of rectangular and circular underground water tank.
Mechanical, economical and ease of construction comparison.
Seismic Refraction Test
Subsurface investigation by seismic refraction
Seismic Data Analysis
Seismic refraction instrumental set up and operation
P-waves velocity ranges for different strata
Chemical composition of Metamorphic rocks
Chemical properties of Metamorphic rocks
Occurrence of Metamorphic rocks
Parent rocks of various metamorphic rocks
Forming conditions of metamorphic rocks mentioned,
What is Project Management Training?
It's purpose?
Steps involved in Project management training?
Importance of project management training?
Project Management in terms of Civil Engineering.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
1. Types Of Concrete:
Generally, there are more than 25 different types of concrete which are used in various
construction works, 12 of the commonly used types are discussed below;
1. Plain or Ordinary Concrete.
2. Lightweight Concrete.
3. High-density Concrete OR Heavy Weight Concrete.
4. Normal Strength Concrete.
5. High Strength Concrete OR High-Performance Concrete (HPC).
6. Reinforced Cement Concrete (RCC).
7. Precast Concrete.
8. Prestressed Concrete.
9. Air-entrained concrete.
10.Ready Mix Concrete.
11.Pervious Concrete.
12.Rapid Strength Concrete.
1. Plain or Ordinary Concrete:
• This type of concrete is widely used.
• Main components are cement, coarse aggregates and sand with specific amount of
water.
• 1:2:4 (Nominal Mix Design mix design) is usually used.
Characteristics:
Density 2200 – 2500
Kg/meter.cube.
Compressive Strength 200 – 500
Kg/centimeter.square.
Tensile Strength 50 – 100
Kg/centimeter.square.
Durability Very Satisfactory
2. Applications:
It is used if very high tensile strength for
structure is not required.
Pavements.
Buildings.
Dams
2. Lightweight Concrete:
If density of concrete is less than 1920 Kg/m3
, It is called Lightweight Concrete.
Composition:
Use of lightweight
aggregates give us
lightweight concrete.
Natural Materials:
pumice, Scoria.
Artificial Materials:
Clays, Expanded Shales.
Processed Materials:
Perlites, Vermiculite.
Applications:
Thermal insulation.
Protection of steel structures.
Building blocks.
In decks of bridges with long spans.
Advantages:
• Very low thermal conductivity.
• Easy removal, transport and erection of precast products.
• Reduction of cost.
• Greater fire resistance.
• Lower thermal expansion.
• Better sound absorption
3. Disadvantages:
• Only drawback of lightweight concrete is that the depth of carbonation i.e. the depth
within which corrosion can occur under suitable conditions. It is nearly twice than that
of normal concrete. Hence, special care will have to be taken to provide sufficient
cover to the reinforcement of the lightweight structures to grant protection against
corrosion.
3. High-density Concrete OR Heavy Weight Concrete:
• Concrete having density in range of 3000-4000 Kg/m3.
• Prepared by using high density crushed rocks as coarse aggregates. Barytes having
specific gravity of 4.5 is the material mostly used as aggregate.
Applications:
Atomic and nuclear power plants.
4. Normal Strength Concrete:
It is acquired by mixing basic ingredients cement,
aggregate and water.
Characteristics:
• Strength ranges from 10 MPa to 40MPa.
• Initial setting time is 30 to 90 minutes,
which depends upon the properties of
cement and weather conditions.
4. 5. High Strength Concrete OR High-Performance Concrete (HPC):
• Concrete having strength greater than 40 N/mm2.
• Water‐cement ratio is decreased in order to achieve high strength.
• This type of concrete is less workable due to low water‐cement ratio.
Characteristics:
• High strength.
• Low shrinkage.
• Self-compaction.
• High fire resistance.
Constituents:
1. Cement.
2. Coarse and fine aggregates.
3. Water.
4. Supplementary cementing materials like silica fume, fly ash, blast furnace slag, etc.
5. Superplasticizers (high water reducing agents).
6. Air entraining agents (optional).
Advantages:
• Resists loads that normal-strength concrete cannot resist.
• Increases the strength per unit cost, per unit weight, and per unit volume.
5. • Increases stability.
• Reduces deflections.
Disadvantages:
• To maintain the special properties, increased quality control is required.
• Materials should be selected carefully.
• High quality materials are required.
• Higher cost.
6. Reinforced Cement Concrete (RCC):
• Plain concrete is weak in tension and good in compression, so, it is the type of
concrete to which reinforcement is introduced to give tensile strength.
• Reinforcement is in the form of rods, bars or meshes.
• Proper bond between the concrete and reinforcement must be assured for proper
strength.
• RCC is widely used in construction.
• It is capable of bearing all types of stress in any type of construction.
7. Precast Concrete:
• This is a form of concrete that is prepared, cast and cured off-site, generally in a well-
equipped space and controlled factory environment.
6. • Precast concrete elements are later joined with other elements to construct the
required structure,
Cautions For Manufacturing:
• Well proportion of concrete ingredients.
• Thorough mixing of the cement, aggregates, and water.
• Careful handling during transport and placement into molds.
• Perfect curing.
Applications:
Precast poles.
Fence posts.
Concrete lintels.
Staircase units.
Concrete blocks.
Cast stones.
Wall panels.
Beams.
Columns.
Floors.
Pipes.
Tunnels
Advantages:
• Speedy construction.
• Assurance of quality.
Disadvantages:
• Very heavy members.
• Small margin for error.
• Difficulty in connections.
• Skilled workers required.
7. 8. Prestressed Concrete:
• In this type of RCC, Reinforcement bars are tensioned before its placed in the
concrete.
• This is a special technique in which the bars or the tendons used in the concrete is
stressed before the actual service load application
• Steel reinforcement carries the load in reinforced concrete, while in prestressed
concrete load is supported by the induced stresses throughout the entire structural
element
Applications:
Floor beams.
Piles.
Railways sleepers.
Bridges.
Water tanks.
Roofs.
Runways.
Advantages:
• Long-term Durability.
• Better finishing of placed concrete.
• Less amount of construction materials.
• Better resistance of stresses normal RCC structures.
• Cracks free.
Disadvantages:
• High strength concrete and high tensile strength steel wires are required
• Special equipment as jacks, anchorage are required for construction.
• Highly skilled workers are needed.
• Higher cost than RCC.
9. Air-entrained concrete:
• It is a type of plain concrete which consists of microscopic air bubbles, diameter of
bubbles ranges from a few thousandths to a few hundredths of an inch.
8. • Air is intentionally entrained into concrete for an amount of about 3 to 6% of the total
volume concrete.
• Entrainment of air is achieved by adding gas or foams, i.e., foaming agents.
• Resins, alcohols, and fatty acids are the agents used for air entraining purpose.
Characteristics:
Air entrained concrete is more
resistant to;
• Scaling.
• Deterioration caused by
freezing and thawing.
• Abrasion.
Advantages:
• Better workability.
• Bleeding, segregation and laitance is decreased.
• Decreases shrinkage and crack development.
• Freezing and thawing impact is decreased.
Disadvantage:
• Reduced strength.
• Porosity of concrete can be increased by using air entraining agent which then
decreases the unit weight.
10. Ready Mix Concrete:
• The type of concrete that is mixed and bathed in a central mixing plant is called as
ready-mix concrete.
• Truck-mounted transit mixer brings mixed concrete to the site which is then directly
used without any further treatment.
• For manufacturing, a centralized mixing plant is needed. Plant will be located at an
adjustable distance from the construction site because long routes for transportation
will result in the settlement of concrete.
9. • In case of delays in delivery time, retarding agents are used to delay the setting time.
Advantages:
• speedy construction.
• Reduced labor and site supervising cost.
• Less cement wastage.
• Relatively pollution free production
• Reduced project time.
Disadvantages:
• Traffic during transportation of concrete may result in the setting.
• Formwork and placing arrangements should be prepared in a big area in advance as
concrete might be bought in large portions.
11. Pervious Concrete:
• It is a special type of concrete that allows
the water to pass through it.
• 15 to 20% voids are provided of the total
volume of the concrete.
Applications:
Used in area where stormwater issue exists.
Pavements.
Driveways.
10. Advantages:
• Cooler Surfaces.
• Less Standing Water.
• Drainage Systems are not required.
• No Runoff.
Disadvantages:
• Soil Issues.
• Assistance of a Specialist is required.
• Ongoing Maintenance.
• Not very strong.
12. Rapid Strength Concrete:
• They will develop strength within few hours of manufacture.
• With this type of concrete, construction is covered quickly.
• Also, removal of formwork is easier.
Applications:
Road repairs.
Underwater construction.
THE END