Mathematics · Concrete Technology
Following the Indian standard method of concrete mix design (IS 10262:1982), the target mean compressive strength for M20 concrete is estimated as: (Take value of tolerance factor t = 1.65; assumed standard deviation as per IS 456:2000 is 4.0 N/mm2)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125.8 MPa
- 228.25 MPa
- 321.65 MPa
- 426.6 MPa✓
Correct answer
26.6 MPa
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