Computer · Concrete Mix Design
A concrete mix is to be designed for a characteristic strength of 35 MPa, such that there is a 5% probability that an individual cube strength test result will fall below the characteristic strength. Determine the target mean strength if the standard deviation for the mix is 4 MPa.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 143.2 MPa
- 241.6 MPa✓
- 337.5 MPa
- 439.0 MPa
Correct answer
41.6 MPa
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