This document summarizes a laboratory experiment to test the soundness of cement using the Le Chatelier apparatus. The test involves making a cement paste, placing it in the apparatus, and measuring the expansion after immersion in water at room temperature for 24 hours and then boiling water for 1 hour. The expansion is calculated and compared to specifications in standards which limit expansion to 10mm. Testing cement soundness ensures the cement will not excessively expand after setting, which could cause cracking.
How to determine Initial and Final Setting Time of Cement?Civil Insider
Get PPT here
https://civilinsider.com/initial-and-final-setting-time-of-cement/
During Construction using concrete, cement paste, mortar certain time is required for mixing, transportation, placing, compacting and finishing. During this time concrete, mortar, cement paste should be in plastic condition and should not harden and it is mandatory that one should use the concrete before it starts to loose its plasticity. So How should someone know how long is concrete workable? and How much travel time is permitted for concrete?
Well its Setting time that tells us how long concrete is going to be workable. Now the question is What is Setting Time of Cement?
Concrete Technology, PPT Based On Unit 2 (Aggregates)
In this PPT you Can studied about Types of aggregates, its properties, and Laboratory testing on it.
By- Prof K.S.Somase
(Assistant professor of Gurukul Education society's Institute of engineering and technology, Nandgaon
How to determine Initial and Final Setting Time of Cement?Civil Insider
Get PPT here
https://civilinsider.com/initial-and-final-setting-time-of-cement/
During Construction using concrete, cement paste, mortar certain time is required for mixing, transportation, placing, compacting and finishing. During this time concrete, mortar, cement paste should be in plastic condition and should not harden and it is mandatory that one should use the concrete before it starts to loose its plasticity. So How should someone know how long is concrete workable? and How much travel time is permitted for concrete?
Well its Setting time that tells us how long concrete is going to be workable. Now the question is What is Setting Time of Cement?
Concrete Technology, PPT Based On Unit 2 (Aggregates)
In this PPT you Can studied about Types of aggregates, its properties, and Laboratory testing on it.
By- Prof K.S.Somase
(Assistant professor of Gurukul Education society's Institute of engineering and technology, Nandgaon
The process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.
Concrete Maturity | Estimating the Real-Time Concrete StrengthAali R. Alizadeh
The strength monitoring of concrete in the job site is a critical step in the optimization of important operations such as formwork removal, opening traffic on the concrete pavement, post-tensioning, concrete curing, and application of load of concrete elements during construction.
Currently, field-cured cylindrical specimens or CIPPOC samples are cast on most of the job site and are tested in laboratory at various times to monitor strength. This is a relatively inefficient method as it provides delayed results and could be prone to errors as usually one field-cured specimen is tested.
To obtain real-time concrete strength results, a standardized alternative based on the maturity concept has been widely used in the concrete industry. According to the ASTM C1074, the temperature history of concrete is recorded after pouring and using a calibration curve, this information is used to estimate the strength of concrete on the job site.
In this presentation, the concept and measurement techniques of concrete maturity are discussed. You can also watch the video version of this presentation in the following link: http://www.giatecscientific.com/knowledge-center/concrete-news/video-what-is-concrete-maturity/
Lesson: Concrete Technology - Building Materials
The quality of aggregate affect the durability and strength of concrete. Since about 3/4 of the volume of concrete is occupied by aggregate.
The process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design.
Concrete Maturity | Estimating the Real-Time Concrete StrengthAali R. Alizadeh
The strength monitoring of concrete in the job site is a critical step in the optimization of important operations such as formwork removal, opening traffic on the concrete pavement, post-tensioning, concrete curing, and application of load of concrete elements during construction.
Currently, field-cured cylindrical specimens or CIPPOC samples are cast on most of the job site and are tested in laboratory at various times to monitor strength. This is a relatively inefficient method as it provides delayed results and could be prone to errors as usually one field-cured specimen is tested.
To obtain real-time concrete strength results, a standardized alternative based on the maturity concept has been widely used in the concrete industry. According to the ASTM C1074, the temperature history of concrete is recorded after pouring and using a calibration curve, this information is used to estimate the strength of concrete on the job site.
In this presentation, the concept and measurement techniques of concrete maturity are discussed. You can also watch the video version of this presentation in the following link: http://www.giatecscientific.com/knowledge-center/concrete-news/video-what-is-concrete-maturity/
Lesson: Concrete Technology - Building Materials
The quality of aggregate affect the durability and strength of concrete. Since about 3/4 of the volume of concrete is occupied by aggregate.
The report is being made on the experience of 3 weeks office training.
briefly describes the quality tests of Fine and Coarse aggregates .
Complete calculation of concrete mix design is included with solved numerical equations.
Cement, water and admixtures quality test is not performed because the contractor purchase it from other chemical and cement manufacturer company.
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Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
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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.
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.
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Runway Orientation Based on the Wind Rose Diagram.pptx
4 soundness of cement.
1. University of Salahaddin/ College of Engineering 2015-2016
Dept. Of Dams & Water resources Engineering By: Goran Adil
Construction Material 1
Test No. 4
Test Name: Soundness of Cement.
Introduction:
The unsoundness of cement is caused by undesirable expansion of some of its constituents,
sometimes after setting. The large change in volume accompanying expansion results in
disintegration and sever cracking. The unsoundness is due to the presence of free lime and
magnesia in the cement. The chief tests for soundness are the Le Chatelier and Autoclave tests.
Purpose:
To find the expansion of cement paste at standard consistency, using Le Chatelier apparatus.
Materials:
1- Ordinary Portland cement.
2- Water.
Apparatus:
1- Le Chatelier apparatus consist of Small brass cylinder split along its generatix, two
indicators with two pointed ends are attached to the cylinder on either side of the split.
2- Two glass plate.
3- Small weight.
4- Balance.
5- Water bath.
6- Container, Hand gloves, Trowel, and Scoop, Glass Graduates.
Procedure:
1. Prepare the paste by adding the amount of water required for standard consistency of the
paste to 200 gm of cement.
2. Mixing for 4±1/4 minutes.
3. Fill the cylinder with cement paste.
4. The cylinder placed on glass plate and covered by another glass plate.
5. Put the small weight on the glass plate.
6. Immerse the cylinder in water (20±1 o
C) for 24 hours.
7. Take out the cylinder from the water bath and measure the distance between the two
indicators.
8. The cylinder mould immersed in boiling water brought to the boil in 25 to 30 minutes and
immersing for one hours.
9. Take out the cylinder from the water bath, let it to cool then measure the distance between
the two indicators.
2. University of Salahaddin/ College of Engineering 2015-2016
Dept. Of Dams & Water resources Engineering By: Goran Adil
Construction Material 2
Calculation:
Expansion = first reading – second reading
Specification:
Specification I.S.S. (5/1984) BS 12:1991
Expansion ≤ 10 mm ≤ 10 mm
Note: If the expansion exceeds a specified value, a further test is made after the cement has been
spread and aerated for 7 days. The result of second expansion test should be less than 5 mm.
Discussion:
- Compare the test results with the standard specifications.
- What is the significance of this test?
3. University of Salahaddin/ College of Engineering 2015-2016
Dept. Of Dams & Water resources Engineering By: Goran Adil
Construction Material 3
Data Sheet
Soundness of Cement
Test No.: 4
Test name: Soundness of Cement
Name of the student:
Group No.:
Date:
Group
No.
Distance between the two indicators Expansion
mm1st
reading 2nd
reading
Average expansion =
Results: