Question

Consider the following statements:
The use of superplasticizers as admixture
1. increases compressive strength of concrete
2. permits lower water-cement ratio, thereby strength is increased
3. reduces the setting time of concrete
4. permits lower cement content, thereby strength is increased?
Which of these statements is/are correct?

• A. 1 and 3 only
• B. 3 and 4 only
• C. 1, 3 and 4 only
• D. 2 only

Answer 1

The correct option is D 2 only

Superplasticizers permit the reduction of water to the extent upto 30% without affecting workability for the same amount of cement.