Question
Download Solution PDFAs per IS 456 ∶ 2000, the maximum cement content used for RCC construction is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
As per IS 456: 2000
The maximum cement content for Reinforced Cement Concrete (RCC) construction is specified in IS 456: 2000. This is done to control various issues such as cracking, shrinkage, and excessive heat of hydration, which can occur due to high cement content. Additionally, environmental and durability considerations also play a role in limiting cement content.
Analyzing the Given Options
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Option 1: 350 kg/m³
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This value is generally used for ordinary concrete mixes but is not the upper limit for RCC construction as per IS 456: 2000.
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Therefore, this option is incorrect.
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Option 2: 400 kg/m³
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This value is commonly used for moderate strength requirements, but it does not represent the maximum limit specified in IS 456: 2000.
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Therefore, this option is incorrect.
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Option 3: 450 kg/m³
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As per Clause 8.2.4.2 of IS 456: 2000, the maximum cement content for RCC construction is limited to 450 kg/m³ to avoid shrinkage, cracking, and durability issues.
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This value is the correct answer.
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Option 4: 500 kg/m³
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This value exceeds the maximum limit specified in IS 456: 2000, as higher cement content can lead to cracking and other durability concerns.
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Therefore, this option is incorrect.
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Conclusion:
The correct answer is Option 3: 450 kg/m³, as specified in IS 456: 2000 for RCC construction.
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