engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Construction Materials and Management Concrete
While testing the compressive strength of cement concrete, the correct standard conditions (viz temperature, age, humidity and size of the specimen) to be maintained as per IS are
1
27 ± 3°C, 28 days, 90% and 15 cm cube
2
26 ± 2°C, 28 days, 80% and 15 cm cube
3
25 ± 1°C, 14 days, 75% and 10 cm cube
4
27 ± 3°C, 7 days, 70% and 10 cm cube