what is the soundness of cement quora

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Soundness in cement is one undesirable property of cement which causes expansion in structure and leads to minor cracks which in turn deteriorate strength durability of structure. The prime factors responsible for Soundness is due to presence of...

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any structure has to have longer life, i.e it has to be durable. durability depend on how sound in the material used. may cement, sand, or aggregates. as for as cement is concerned, the soundness depend on it’s ingredients. Especially excess of li...

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My dear friend Mainuddin Ansari, Soundness of cement :- “Soundness of cement indicates that teb cement paste, once it has set, does not undergo appreciable change in volume causing concrete to crack”. The cement having some quality of free lime, m...

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Soundness of cement refers to the ability of cement to retain its volume after it has hardened. After the drying of cement mortar or concrete, it should not undergo any appreciable change in volume. If there is a change in the volume, it will caus...

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There are many possible errors in the casting of concrete. Improper ratio of cement to sand to aggregate to water. The wrong amount of any will affect the result. Too much water is a common cause for concrete to be weaker than the desired product....

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Soundness test measure the degree of resisistance to disintegration by weathering. Almost all structural elements are in contact with air and there is a chance for disintegration. The volume needed to be maintained throughout the design life. As t...

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What is the weight of Cement bag? - Anything ... - Quora

Sep 02, 2020  The main reason for the loss in weight of cement is transportation of bags from the factory outlet to the site, during this period the bag has to bear lots of time ups and downs and as we know that cement is very fine material and which leads to escape of cement particals ultimately that causes some loss in weight per cement bag.

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What Is Fineness Of Cement Fineness Test Of Cement ...

May 29, 2019  What Is Fineness of Cement. The fineness of cement is a measure of cement particle size and is denoted as terms of the specific surface area of cement.. The Fineness Test of Cement is done by sieving cement sample through standard IS sieve. The weight cement particle whose size greater than 90 microns is determined and the percentage of retained cement particle are calculated.

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Fineness Test of Cement; Its Apparatus, Procedure.

Fineness test indirectly measures the surface area of the particles of cement per unit mass. 5. Fineness increases the strength development in the cement principally during its first seven days. 6. It increases the rate of hydration. More is the fineness of cement particles more will be the rate of hydration.

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Test to Determine the Setting Time of Cement

Dec 22, 2018  Initial Setting Time of Cement – Note down the time, when needle fails to penetrate 5 – 7 mm from the bottom of the test block. This time is denoted as an initial setting time of cement. Final Setting Time of Cement – Note down the time, when needle fails to make an impression on the surface of the test block. This time is denoted as a ...

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What are the properties of reinforced concrete ...

Water Cement Ratio. The ratio of the amount of water to the amount of cement by weight is termed the water-cement ratio. The strength and quality of concrete depend on this ratio. The quantity of water is usually expressed in litre per bag of cement. if water required for one bag of cement is 30 litres, the water-cement ratio is equal to 30/50 ...

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Does water weaken concrete? - Physics Chemistry

So first things first, the water/cement ratio is defined as the ratio of the weight of water to the weight of cement used in a concrete mix. Let us consider the following two cases :-Case 1 : When the water/cement ratio is high. If the w/c ratio is high, a large amount of water is available per unit weight of cement in the concrete mix. So if a ...

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Soundness Test on Aggregates - GharPedia

The soundness test on aggregate is carried out to learn the resistance of aggregates to weathering actions like thawing, freezing, alternate wetting and drying in normal conditions and in salt water, variation in temperature. When subjected to above stated conditions, aggregates which are weak, porous, and contains any irrelevant matters, can ...

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What is the chemical formula of ... - fintechshot.quora

May 20, 2020  Portland cement gets its strength from chemical reactions between the cement and water. The process is known as hydration. This is a complex process that is best understood by first understanding the chemical composition of cement. Manufacture of cement Portland cement is manufactured by crushing, milling and proportioning the following materials:

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What are minimum quantities we can order of construction ...

Sep 16, 2020  The free water-cement ratio is responsible for durability of concrete under various conditions of exposure that are envisaged during the life of the concrete structure. That’s why I.S-456: 2000 has recommended minimum cement content for maximum water-cement ratio for various exposure conditions like mild, moderate, severe, very severe, extreme.

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Consistency Of Cement Standard Consistency Test Of ...

May 20, 2020  The standard consistency of any cement is achieved when cement permits the Vicat plunger to penetrate to a point 33 to 35 mm from the bottom of the Vicat mould. 2. First of all, take about 300 gm of cement into a tray and is mixed with a known percentage of water by weight of cement. Let’s start with 26% of water and then it is increased by 2 ...

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What are types of Blocks or Bricks used in ... - Quora

Concrete bricks are made using solid concrete along with ingredients like cement, sand, coarse aggregates, and water. The sizes of these bricks can be tailored according to the size requirements. These are commonly used in external and internal blockworks, fences, and tend to provide an outstanding aesthetic presence.

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What raw materials are used to make shoes? - Shoegaze - Quora

Dec 21, 2020  Inside the kiln the cement slurry is heated at 1400 degree Celsius to 1600 degree Celsius .At this high temperature ,chemical reaction take place . As a result ,cement clinker is obtained in the form of marble size ball and cement clinker is allowed to cool and mixed with gypsum 2% to 5% then the mixture is ground to get fine powder of cement.

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Laughter Is Good Medicine - Quora

Laughter Is Good Medicine. Quora User. Former VP of Customer Relations (2000–2015) . Mon. Angular Fitness. Sponsored. The Rock admits this was the best decision he ever made. The big companies don't want you to know his secrets.

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Proportions of Cement Ingredients, Their Functions and ...

7.Sulfur (SO3) Sulfur or sulfur trioxide in the cement is about 1 to 3%. Its function is to make the cement sound. If it is in excess quantity the cement becomes unsound. Fig 8: Sulfur Trioxide. 8. Alkalis. Alkalis like soda and potash are present in the cement which normally ranges from 0.1 to 1%.

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What is the full form of rcic? - All Full Form World

RCC - Reinforced Cement Concrete. Reinforced Cement Concrete is a combination of concrete and steel to build a structure instead of using only concrete. Concrete is good in resisting compression but is very weak in resisting tension. On the other hand, steel has high tensile strength and the bond between steel and concrete is good.

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Properties of Cement- Physical Chemical - Civil Engineering

Soundness refers to the ability of cement to not shrink upon hardening. Good quality cement retains its volume after setting without delayed expansion, which is caused by excessive free lime and magnesia. Tests: Unsoundness of cement may appear after several years, so tests for ensuring soundness must be able to determine that potential. ...

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Cement - Wikipedia

A cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel together.Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete.Concrete is the most widely used material in existence and is behind only water as ...

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Compressive Strength of Cement and Test to find it

Mar 09, 2020  Compressive Strength of Cement: Compressive strength is the capacity of material or structure to resist or withstand under compression. The Compressive strength of a material is determined by the ability of the material to resist failure in the form of cracks and fissure.

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REPLACEMENT OF WHITE CEMENT WITH ORDINARY

Quora, Nidhi, 2017, pg. 1) The constant K can be derived mathematically from the above normal distribution graph and has an increasing trend ... • Soundness and setting time tests on cement carried out in accordance with BS EN 196-3:1995; Determination of setting time and soundness.

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Effect of water absorption by the aggregate on properties ...

procedure, the cement paste properties and the time after mixing. When prewetted lightweight aggregate was used, the results indicate that a small amount of water moved out from the aggregate already when the cement paste was in a fresh state. When dry, water absorbing lightweight aggregate was used, the water absorption

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Properties of Cement- Physical Chemical - Civil Engineering

Soundness refers to the ability of cement to not shrink upon hardening. Good quality cement retains its volume after setting without delayed expansion, which is caused by excessive free lime and magnesia. Tests: Unsoundness of cement may appear after several years, so tests for ensuring soundness must be able to determine that potential. ...

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How can one clearly differentiate the strength, hardness ...

The required amount of cement paste is dependent upon the amount of void space that must be filled and the total surface area that must be covered. When the particles are of uniform size the spacing is the greatest, but when a range of sizes is used the void spaces are filled and

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Is it possible that an old cement patio could become ...

The water/cement ratio is the most important parameter of the concrete mix design; it governs the strength, durability, and workability of the concrete mix. For some projects, you may need more water and cement than others, but it still needs to balance with the other ingredients.

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What are minimum quantities we can order of ... - Quora

Jul 14, 2020  We calculate these quantities of cement, sand and aggregate in volume M3 basis. 1 M3 of wet concrete requires 1.54 M3 of total materials on dry basis. For the M15 concrete each bag of cement requires 32 litres of water. So, the water required total is 6.34 * 32 = 202.88 or say 203 lit.

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What is emulsion and what are it's advantages as a road ...

Major Difference between the Flexible pavment and Rigid pavement. 1). FP consists of a series of layers with the highest quality materials at or near the surface of pavement.. RP consists of one layer Portland cement concrete slab or relatively high flexural strength.. 2). FP reflects the deformations of subgrade and subsequent layers on the surface.. RP is able to bridge over localized ...

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Soundness Test Of Cement Is Done To Determine Its A ...

Soundness test of cement is done to determine its a) Durability in seawater b) Free lime content* c) Iron oxide content d) Alumina content. Share. asked Jul 31 by anonymous. Show More. 1 Answer. Answer : b) Free lime content* Like 0 like . answered Jul 31 by ...

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What is the main problem of AAC blocks? Is it cracking on ...

It is formed by adding a foam (something similar to the shaving foam we use) to a cement-flyash slurry. Any synthetic foaming agent has a max stand time of 2 hours before the foam starts collapsing. Therefore the mix design should set within before 1.5 hours and harden sooner else

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Why Quora sucks [Review/Rant]. A lot of people love Quora ...

Aug 16, 2016  One of Quora’s main policies is the so called “BNBR” policy which is just an acronym for “Be Nice Be Respectful”. Sounds quite harmless and self-explanatory but what it actually is or ...

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Fineness of Cement – Definition – Test - Definecivil

Mar 23, 2021  Fineness of cement Definition. Fineness of cement is an important physical property of cement that defines the particle size and the surface area of cement particles. It is expressed in %age when determined as a modulus with sieving or units of cm2/gm or m2/kg in case when determine by Blaine air permeability apparatus. So, in the laboratory we ...

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Fineness test of Cement and its Significance Tests on Cement

Nov 03, 2017  Fineness test of Cement:-As per IS: 4031 (Part 1) – 1996. The cement of good quality should have less than 10% of wt of cement particles larger than 90 µm. (micron) To determine the number of cement particles larger than 90 µm. or Fineness test of cement

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Why is a line of sight fixed while a level is set up in an ...

Jul 28, 2020  you’ll need a dryer, cement mill, rotary kiln, preheater and dust collector. The total cost of the equipment is between R597, 000 and 72, 000. 1 Ton/ 907 kg limestone will cost you R1782, 00. It takes 1587 kilograms of limestone to make one ton of cement. You also have remember to incorporate the cost of utilities, rent, salaries and insurance.

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Compressive Strength of Cement and Test to find it

Mar 09, 2020  Compressive Strength of Cement: Compressive strength is the capacity of material or structure to resist or withstand under compression. The Compressive strength of a material is determined by the ability of the material to resist failure in the form of cracks and fissure.

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