This document discusses quality control of concrete through various tests on fresh and hardened concrete. It begins with an introduction to concrete and quality, then discusses where quality control begins in the production of materials and continues through handling, batching, mixing, transporting and placing concrete. Key tests on fresh concrete include slump and compacting factor tests, while tests on hardened concrete include compression, tensile strength, and flexural strength tests to evaluate the quality and strength of the concrete. The document also reviews materials used in concrete such as cement, water, aggregates, and admixtures.
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
Design of rigid pavements. IRC method of design of rigid pavement. Transportation Engineering. Civil Engineering. Wheel loads on rigid pavement. Action of various stresses on rigid pavement. Highway engineering. How rigid pavements different from flexible pavements
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
Design of rigid pavements. IRC method of design of rigid pavement. Transportation Engineering. Civil Engineering. Wheel loads on rigid pavement. Action of various stresses on rigid pavement. Highway engineering. How rigid pavements different from flexible pavements
Hi viewers, I am back with the various concepts of TYPES OF TESTS ON CONCRETE for civil engineers.
Here, i explained few topics
What is a concrete? Classification based o state of concrete? and various tests?
Reinforced earth is a combination of earth and linear reinforcing strips that are capable of bearing large tensile stresses.
The reinforcement provided by these strips enable the mass to resist the tension in a way which the earth alone could not. The source of this resistance to tension is the internal friction of soil, because the stresses that are created within the mass are transferred from soil to the reinforcement strips by friction.
This presentation gives a brief introduction on FRC's history, definition and why is it used. Types of FRC's and it's applications is explained in detail in later stages.Also, it covers various properties that affects FRC and a Case study in end.
Workability of concrete is defined as the ease and homogeneity with which a freshly mixed concrete or mortar can be mixed, placed, compacted and finished. Strictly, it is the amount of useful internal work necessary to produce 100% compaction.
Pile foundation is important for construction of foundation where bearing capacity of soil is poor. Pile foundation is use for distribution of uneven load of superstructure.There are so many type of pile are use for construction. Here i present some of pile with suitable condition for construction and methods for construction.
Thank you.
A crack is a complete or incomplete separation of concrete into two or more parts produced by breaking or fracturing.
Cracks are one kind of universal problems of concrete construction as it affects the building artistic and it also destroys the wall’s integrity, affects the structure safety and even reduce the durability of structure
Carbon dioxide penetrates into the concrete through the cracks and speed up carbonation around the cracks, thus shortening the structure usage.
The cracks in the concrete wall would cause the leakage of the building; it reduces the stiffness, durability and seismic performance of buildings.
Cracks on the wall surface damage to the later rendering, will affect to the appearance.
Hello, My name is Saidul Islam. I am a student of Stamford University Bangladesh. It is my varsity presentration. Here halp our course teacher , so I made it too largest. Here you got details in concrete. we are finish those work.
Hi viewers, I am back with the various concepts of TYPES OF TESTS ON CONCRETE for civil engineers.
Here, i explained few topics
What is a concrete? Classification based o state of concrete? and various tests?
Reinforced earth is a combination of earth and linear reinforcing strips that are capable of bearing large tensile stresses.
The reinforcement provided by these strips enable the mass to resist the tension in a way which the earth alone could not. The source of this resistance to tension is the internal friction of soil, because the stresses that are created within the mass are transferred from soil to the reinforcement strips by friction.
This presentation gives a brief introduction on FRC's history, definition and why is it used. Types of FRC's and it's applications is explained in detail in later stages.Also, it covers various properties that affects FRC and a Case study in end.
Workability of concrete is defined as the ease and homogeneity with which a freshly mixed concrete or mortar can be mixed, placed, compacted and finished. Strictly, it is the amount of useful internal work necessary to produce 100% compaction.
Pile foundation is important for construction of foundation where bearing capacity of soil is poor. Pile foundation is use for distribution of uneven load of superstructure.There are so many type of pile are use for construction. Here i present some of pile with suitable condition for construction and methods for construction.
Thank you.
A crack is a complete or incomplete separation of concrete into two or more parts produced by breaking or fracturing.
Cracks are one kind of universal problems of concrete construction as it affects the building artistic and it also destroys the wall’s integrity, affects the structure safety and even reduce the durability of structure
Carbon dioxide penetrates into the concrete through the cracks and speed up carbonation around the cracks, thus shortening the structure usage.
The cracks in the concrete wall would cause the leakage of the building; it reduces the stiffness, durability and seismic performance of buildings.
Cracks on the wall surface damage to the later rendering, will affect to the appearance.
Hello, My name is Saidul Islam. I am a student of Stamford University Bangladesh. It is my varsity presentration. Here halp our course teacher , so I made it too largest. Here you got details in concrete. we are finish those work.
Introduction to Concrete
Manufacturing of Concrete
Types of Concrete
Properties of Concrete
Advantage of Concrete
Uses of Concrete
Various Tests for Concrete
Innovations…
Useful for Second year Civil Engineering Students of Savitribai Phule Pune university, Pune (University of Pune)
This PPT shows Properties, testing and analysis of Fresh concrete, from the subject Concrete Technology.
Few more PPTs and Videos are available at my blog tusharhsonawane.wordpress.com
Concrete is a mixture of cement, aggregates and water, with any other admixture which may be added to modify the placing and curing processes or the ultimate physical properties.
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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.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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.
2. 2
Index
Sr.No Title Page No.
1 Introduction 3
2 Quality control application in concrete construction 4
3 Where does quality control begin? 4
4 How does quality control continue? 5
5 To know the quality of concrete,
We can do the several tests.
5
6 Material Used in Concrete 10
7 Reference 12
3. 3
Introduction
What is concrete?
Concrete is a most widely used construction material, commonly made by mixing of
Cement with Fine Aggregate, Coarse Aggregate, Water and Admixture.
What is quality of concrete?
For the building structure to be durable, more strength and also for aesthetic,
accomplishing a quality concrete is of supreme importance. This is because the vital factor
which determines or makes a building look elegant, gives a building more strength and
durability the concrete’s quality.
Low strength and low durable concrete structures have damaged millions of lives and
properties in past decades. So, in order to achieve a quality and a durable building structure,
maintaining the quality and standard of concrete is paramount.
Quality is perceived differently by different people. Yet, everyone understands what is
meant by “quality”. In a manufactured product, the customer as a user recognizes the quality of
fit, finish, appearance, function, and performance.
The quality of service may be rated based on the degree of satisfaction by the customer
receiving the service. The relevant dictionary meaning of quality is “the degree of Excellence”
4. 4
Quality control application in concrete construction
Mechanical properties of the reinforcement to be used.
Dimension of the reinforcement.
Location of the reinforcement in construction before concrete poured.
Location of pre-stressing ducts.
Properties of the cement used in the concrete.
Properties of the concrete mix designed of use in the structure.
Control of the coarse aggregates and fine aggregates going into the concrete.
Mixing of the concrete.
Transport of the concrete to the construction site.
Slump of the concrete.
Pouring of the concrete.
Control of water addition.
Vibration/Compaction of the concrete.
Preparation of areas where different concrete pours are done.
Control of compression test samples
Control of formwork removal.
Where does quality control begin?
It begins in the production of material used in concrete ( Sampling and Testing):
Portland Cement
Pozzolana
Coarse and Fine Aggregate
Uniformity of concrete production will be no greater than the uniformity of materials
used in the concrete.
5. 5
How does quality control continue?
Handling and stockpiling
Batching and Mixing
Sampling and testing fresh concrete
Slump
Air Content
Unit weight
Temperature
Transporting and placing the freshly mixed concrete.
To know the quality of concrete,
We can do the several tests.
(1) Tests on Fresh Concrete
a) The Slump test
b) The Compacting Factor Test
(2) Tests on Hardened Concrete
a) Compression Test
b) Tensile Strength Test(Split Cylinder Test)
c) Flexural Strength Test
6. 6
(1)Tests on Fresh Concrete
(a) The Slump Test
The mound for the slump test has the shape of frustum of a cone, 300mm high,
The Diameter of the base is 200 mm and at the top is 100mm.
If the slump is:
25-50 =Low Workability
50-100 =Medium Workability
100-150 = High Workability
7. 7
(b)The Compacting Factor Test
Compacting factor is less than 0.75 = low workability concrete.
Compacting factor is less than 0.92 = High workability concrete.
Compacting Factor Machine
8. 8
(2)Tests on Fresh Concrete
(a)CompressionTest
To determine the characteristic strength of the concrete. Size of concrete
cylinder is 150mm dia 300mm long.
Compression test of concrete Cylinder
(b)Tensile Strength Test (Split Cylinder Test)
When the cylinder split the tensile strength of concrete is determined.
9. 9
(c) Flexural Strength Test
Test to determine the tensile strength of concrete in flexure have been largely
superseded by the indirect tensile strength test, although it is still specified occasionally on
pavement and other similar projects where the strength of concrete in flexure, or bending,
is of prime importance.
10. 10
Material Used in Concrete
1) Cement
2) Water
3) Aggregate
4) Admixture
(1) Cement
A mixture of compounds made by burning limestone and clay together at very
high temperature ragging from 1400 ®C to 1500 ®Cather production of Portland Cement
begins with the quarrying of limestone.CaCO3.Then Mixed with Clay(or Shale),sand and iron
ore and ground together to form a homogenous powder.
(2) Water
Water is the key ingredient. When water mixed with a cement, forms a paste
that binds the aggregates together. water causes the hardening of concrete through
process call hydration.The water needs to be pure in order to prevent side reaction from
occurring which may weaken the concrete or otherwise interfere with hydration
process.The ratio of cement and water is the most critical factor in the production of
‘perfect’ concrete. Too much water can reduces concrete strength but high workability.Too
little water will make the concrete unworkable but high strength.
11. 11
(3) Aggregate
Chemically inert, solid bodies, held together by the cement. Come in various
shapes, sizes and material ranging from fine particles of sand to large, coarse rock. Soft,
porous aggregate can result in weak concrete with low wear resistance. Hard aggregate can
make strong concrete with high resistance to abrasion Should be clean, Hard and strong,
Usually washed to remove any Dust, Silt, Clay, Organic matter.
(4) Admixtures
A material ,other than aggregate ,cement and water added in small quantities
to the mix in order to produce some desired modification, either to the physical or
chemical properties of the mix or of the hardened product. The most common admixture
affect plasticity, air entrainment and curing time.
12. 12
Reference
Books
Concrete Technology (R. P. Rethaliya)
Concrete Technology (M. S. Shetty)
Web Sites
www.concretenetwork.com
www.constructionlearning.com
www.scribd.com