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Ertanishpachnanda
Ertanishpachnanda

Ertanishpachnanda

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How can we reduce laitance from concrete structures?

  1. nikeetasharma

    nikeetasharma

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    Laitance can be reduced by controlling the amount of water in the concrete mix during construction. If too much water remains in the concrete than various other issues can be found like greater shrinkage with the possibility of more cracks and reduced compressive strength overall.

    Laitance can be reduced by controlling the amount of water in the concrete mix during construction. If too much water remains in the concrete than various other issues can be found like greater shrinkage with the possibility of more cracks and reduced compressive strength overall.

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fathima
fathima

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What is the difference between fe 500 and fe 500D rebars?

  1. nikeetasharma

    nikeetasharma

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    In accordance to the latest revision of IS 1786(2008) Fe 500D is a new introduction of deformed steel bar that has same specified minimum 0.2 percent proof stress/yield stress but with enhanced specified minimum percentage elongation.

    In accordance to the latest revision of IS 1786(2008) Fe 500D is a new introduction of deformed steel bar that has same specified minimum 0.2 percent proof stress/yield stress but with enhanced specified minimum percentage elongation.

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Dhanya
Dhanya

Dhanya

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What are Mac-Arthur Piles?

  1. nikeetasharma

    nikeetasharma

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    Mac-arthur piles are the heavy steel casing with a core is driven into ground. When the desired depth is reached, the core is withdrawn and a corrugated steel shell is placed in the casing. The last operation consists in filling and gradually compacting the concrete and withdrawing the casing.

    Mac-arthur piles are the heavy steel casing with a core is driven into ground. When the desired depth is reached, the core is withdrawn and a corrugated steel shell is placed in the casing. The last operation consists in filling and gradually compacting the concrete and withdrawing the casing.

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Vivek Patel
Vivek Patel

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Which best material for backfill of retaining wall?

  1. nikeetasharma

    nikeetasharma

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    Thus when it comes to backfill, it refers to the dirt behind the wall. In order to provide proper drainage, atleast 12 inches of granular backfill (gravel or a similar aggregate) should be installed directly behind the wall. Compacted native soil can be used to backfill the rest of the space behindRead more

    Thus when it comes to backfill, it refers to the dirt behind the wall. In order to provide proper drainage, atleast 12 inches of granular backfill (gravel or a similar aggregate) should be installed directly behind the wall. Compacted native soil can be used to backfill the rest of the space behind the wall.

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vivek gami
vivek gami

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Who have higher modulus of elasticity rubber or steel?

  1. nikeetasharma

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    Here if the matter comes about higher modulus of elasticity between rubber or steel then we can say steel is more elastic than rubber. We know that young's modulus is the ratio of stress to the strain. Therefore, for a given stress, the strain produced in steel is much smaller than that produced inRead more

    Here if the matter comes about higher modulus of elasticity between rubber or steel then we can say steel is more elastic than rubber. We know that young’s modulus is the ratio of stress to the strain. Therefore, for a given stress, the strain produced in steel is much smaller than that produced in rubber. This implies that Young’s modulus for steel is greater than that for rubber.

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Vivek Patel
Vivek Patel

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What is Sand Face Plaster and Where is it used?

  1. nikeetasharma

    nikeetasharma

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    Generally sand faced plaster is defined as the layer of cement-sand mortar applied over brickwork and served as a wet-proof coat on masonry. This type of plaster is used to give a finishing touch to a surface. But to some extent it also serves as a sound and thermal insulation material. Sand faced pRead more

    Generally sand faced plaster is defined as the layer of cement-sand mortar applied over brickwork and served as a wet-proof coat on masonry. This type of plaster is used to give a finishing touch to a surface. But to some extent it also serves as a sound and thermal insulation material.

    Sand faced plaster is used in walls and ceilings.

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Shivan
Shivan

Shivan

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What are refractory bricks and mention it’s types?

  1. nikeetasharma

    nikeetasharma

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    A fire brick, firebrick, or refractory is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency. There are mainlyRead more

    A fire brick, firebrick, or refractory is a block of ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand high temperature, but will also usually have a low thermal conductivity for greater energy efficiency.

    There are mainly three varieties of refractory bricks;

    a) Acid Refractories
    i. Ordinary Fire Bricks
    ii. Silica Bricks
    iii. Ganister Bricks

    b) Basic Refractories
    i. Magnesite Bricks
    ii. Dolomite Bricks
    iii. Bauxite Bricks

    c) Neutral Refractories
    i. Chromite Bricks
    ii. Carborundum
    iii. Chrome Magnesite Bricks
    iv. Spinal Bricks
    v. Forsterite Bricks

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Tips_and_tricks
Tips_and_tricks

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What are the Types of Mineral Admixtures in Cement?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Komal Bhandakkar AUTHOR
    This answer was edited.

    First, let me clear this one of the basic concepts that when we use any extra ingredient besides the ingredient of concrete for improving its some property, it is known as an admixture. When we use any extra ingredient in cement to improve some cement property, it is called an additive. Important: ARead more

    First, let me clear this one of the basic concepts that when we use any extra ingredient besides the ingredient of concrete for improving its some property, it is known as an admixture.

    When we use any extra ingredient in cement to improve some cement property, it is called an additive.

    Important: Additives are added to the cement and not the admixture.

    Thank You.

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