In the different classes or grades of concrete, what is the difference between C20, M20 B20. what are the letters C, M, and B stands for.
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If the proportions of concrete is a:b:c i.e if "a" parts of cement,"b" parts of fine aggregate & "c" parts of coarse aggregate are mixed by volume. Then the resulting volume will have a volume of ------? How?
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Okay guys I m new here i wanna ask you that ,if i mix two three larger stones (about 20cm dia)in concrete for column or footings what actually happens, how the strength of concrete is reduced? and why it is not allowed?
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11 Answers GRC, KEC, L&T, Techno Electric and Engineering, UPENN,
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