Question
Download Solution PDFAs per IS 456 ∶ 2000, the minimum grade of concrete to be used for plain concrete and reinforced concrete, respectively, in concrete works exposed directly along the sea coast are:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Concrete in Sea-water (as per IS 456: 2000)
Concrete in sea-water or exposed directly along the sea-coast shall be at least M 20 Grade in the case of plain concrete and M 30 in case of reinforced concrete.
The use of slag or pozzolana cement is advantageous under such conditions.
|
Exposure |
Minimum grade of |
Minimum grade of |
|
Mild |
- |
M20 |
|
Moderate |
M15 |
M25 |
|
Severe |
M20 |
M30 |
|
Very severe |
M20 |
M35 |
|
Extreme |
M25 |
M40 |
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