- Impurities in water ( large quantity of suspended solids , excessive amount of dissolved solids or salts , or appreciable amount of organic materials ) will
- Affect setting
- Affect strength
- Cause staining on concrete surface
- Cause corrosion of reinforcement
- Drying shrinkage
- Efflorescence
- Acidic water affect setting and hardening of concrete , alkaline water > quick setting and low strengths .
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