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Question

Why is super plasticizer added to concrete?
(1) To reduce the quantity of mixing water
(2) To increase workability
(3) To reduce the quantity of cement
(4) To increase early age strength


A
(1) and (4)
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B
(1), (2) and (4)
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C
(3) and (4)
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D
(1), (2), (3) and (4)
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Solution

The correct option is D (1), (2), (3) and (4)
Superplasticizer can reduce the water content as the water/cement ratio remain the same and can increase workability at the same water/cement ratio reduce cement and provide early strength.

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