Mathematics · Concrete Mix Design
A concrete mix is designed for a characteristic strength of 35 MPa, such that there is a 5% probability that an individual cube test result will fall below it. 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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- 143.4 MPa
- 234.0 MPa
- 336.6 MPa
- 441.6 MPa✓
Correct answer
41.6 MPa
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