How much cement sand & aggregate required for M20 concrete
Normal grade of concrete are M25, M20, M15, M10, M7.5 & M5 generally based on nominal mix proportion of cement sand and aggregate.. Standard grade of concrete are M25, M30, M35, M40, & M45 are made according to design mix have higher compressive strength than normal grade of concrete.. High strength concrete grade are M50, M55, M60, M65, & …
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