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S Block Elements

Resistance to...

Question

Resistance to sulphate attack in concrete can be obtained by adding admixture

A

gypsum

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B

calcium chloride

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C

pozzolana

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D

None of the above

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Solution

The correct option is C pozzolana
Portland Pozzolona cement offers great resistance to sulphate attack and produce less heat of hydration during setting therefore this cement is used for marine structure also.

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Similar questions

Q. Pozzolana used as an admixture in concrete has the following advantages:
1. It improves workability with lesser amount of water
2. It increases the heat of hydration and so lets the concrete set quickly.
3. It increases the resistance of concrete to attack by salts and sulphates.
4. It leaches out calcium hydroxide.
Select the correct answer using the codes given below:

Q. Pozzolana used as an admixture in concrete has the following advantages:
1. It improves workability with a lesser amount of water.
2. It increases the heat of hydration and so lets the concrete set quickly
3. It increases the resistance of concrete to attack by salts and sulphates.
4. It leaches out calcium hydroxide.
Select the correct answer using the codes given below:

Q. Consider the following statements:
Pozzolana used as an admixture in concrete has the following advantages:
1. It improves workability with lesser amount of water
2. It increases heat of hydration and so sets the concrete quickly.
3. It increases resistance to attack by salts and sulphates.
4. It leaches calcium hydroxide.
Select the correct answer using the codes given below:

Q. An accelerating admixtures added to concrete performs the following functions

Q. Air entrainment Portland Cement-
(i) offers great resistance to sulphate attack
(iI) offers great resistance to freezing and thawing
(iii) reduces the possibility of shrinkage and crack formation in the concrete surface
(iv) is suitable for mass concreting

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