There are laboratory tests to determine the quality of material, but I want to know how anyone should check the quality of material on the actual construction site?
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on cement bag some standard information should be printed like the type of cement, pozzolana content, IS code of that type, week of packing,
it should have a greenish color
it should give smooth feeling when putting your hand in cement bag and doesn’t present any lumps
When it throw on the water surface, it should stay on the surface before the sink for some time.
cement bag should be used within three months of manufacturing
Basically, we check clay content in the sand by sand, taken in hand, and rub it. If there is clay is present, then particular clay sticks with hand moisture so we can observe easily.
sand should be washable
We can also check its uniformity by sieve if it’s present on site.
aggregate should have well-graded we can check it by check packing (interlocking structure ) of it
aggregate should not have any clay contain
and other material we can check it by various experience .
For cement, if you want to quickly test on-site, then you have to check the following things for good cement.
For other material like steel, formwork you can check the physically and check for damage if available then I recommend to not to use.