Question
Download Solution PDFThe pH value of water to be used in concrete shall generally be:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation
The pH value of water for making reinforced cement concrete should be between 6 to 8.5.
Important properties of water for concrete:
- The pH value must not be less than 6.
- The presence of salts of manganese, tin, zinc, copper, and lead causes a reduction in strength.
- The presence of sugar causes retardation in the setting.
Important Points
The permissible limit for solids as per IS 456 of 2000:
|
Material |
Permissible limit (maximum) |
|
Organic |
200 mg/L |
|
Inorganic |
3000 mg/L |
|
Sulphates (as SO3) |
400 mg/L |
|
Chlorides (as Cl) |
2000 mg/L for concrete work not containing embedded steel and 500 mg/L for reinforced concrete work. |
|
Suspended |
2000 mg/L |
Last updated on Jun 4, 2025
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