Acceptance criteria for cement concrete at site.

For all the cases 28 days strength shall alone be the criterion for acceptance or rejection of concrete. The test result of the sample shall be the average of the strength of three specimens. The individual variation should not be more than 15% of the average.

Concrete will be subjected to following test a at site:

1. Slump test
2. Temperature test
3. Cube casting and strength checking at 7 and 28 days test
4. Durability tests ..namely..absorption test, chloride and sulphate contents tests, water permeability test.