Question

The values of slump commonly adopted for the various concrete mixes are given below:
1. Concrete for road works: 20 to 28 mm
2. Ordinary RCC work : 50 to 100 mm
3. Column retaining walls : 12 to 25 mm
4. Mass concrete : 75 to 175 mm
Which of the pairs given above are correctly matched?

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

Answer 1

The correct option is B 1 and 2

Concrete for road work 20-30mm
Ordinary RCC work 50-100mm
Columns, retaining walls 75-150mm
Vibrated concrete 12-25mm
Mass Concrete 25-50mm