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These are common visual or structural defects in concrete work.

Efflorescence is due to water-soluble salts rising to the surface and crystallizing.

These classes denote quality, with 1st being the highest and 4th the lowest.

These are standard steps followed to ensure quality concrete construction.

RCC pile caps distribute loads from the structure to the pile group.

ISI specifies 14 days for characteristic strength, although 28-day strength is standard for mix design.

BIS defines M5 to M35 as seven standard grades: M5, M10, M15, M20, M25, M30, M35.

Segregation occurs when heavier particles settle and lighter materials rise, causing inconsistency.

These tests assess the ease of mixing, transporting, and placing concrete.

Dumpy level is a precision instrument used to determine relative heights on site.

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