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Cement > Composition > Flashcards

Composition Flashcards

1
Q

Highest percentage component present in cement ?

A

Lime

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2
Q

Lime percentage in cement

A

62-65%

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3
Q

2nd highest component in cement

A

Silica

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4
Q

Percentage of silica in cement

A

17-25%

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5
Q

What is the function of lime in cement

A

Imparts strength and soundness

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6
Q

What happens when lime is deficient in cement

A

Quick setting
Reduced strength

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7
Q

What happens when lime is present in excess in cement

A

Unsoundness causing it to
Expand and disintegrate

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8
Q

Alumina in cement imparts which property

A

Quick setting time

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9
Q

Excess alumina in cement causes

A

Weakens the cement
Reduce clinkering temperature

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10
Q

Calcium sulphate is present in which form in cement

A

Gypsum

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11
Q

Function of gypsum in cement

A

Increases initial setting time

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Cement (3 decks)

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