engineering recuitment NHPC JE & THDC JE 2023 Mock Test Construction Materials and Management Concrete
The value of slump commonly adopted for the various concrete mixers are given below.
1. Concrete for road works: 20 to 28 mm
2. Ordinary RCC works: 50 to 100 mm
3. Columns retaining walls: 12 to 25 mm
4. Mass concrete: 75 to 175 mm
Which of the pairs given above are correctly matched?1
1, 3 and 4
2
1 and 2
3
3 and 4
4
2 and 4