The specified 28-day compressive strength of concrete for a project is fc’ = 36MPa. This statistical data for the concrete production facility used for the project gives the standard deviation (s) 3.2 MPa, obtained from more than 20 sample strength tests. Calculate the required average compressive strength for the concrete mix. Using the compressive strength vs. water/cement ratio chart for the non - air-entrained concrete, calculate the water-cement ratio necessary for the mix.
The specified 28-day compressive strength of concrete for a project is fc’ = 36MPa. This statistical data for the concrete production facility used for the project gives the standard deviation (s) 3.2 MPa, obtained from more than 20 sample strength tests. Calculate the required average compressive strength for the concrete mix. Using the compressive strength vs. water/cement ratio chart for the non - air-entrained concrete, calculate the water-cement ratio necessary for the mix.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The specified 28-day compressive strength of concrete for a project is fc’ = 36MPa. This statistical data for the concrete production facility used for the project gives the standard deviation (s) 3.2 MPa, obtained from more than 20 sample strength tests.
Calculate the required average compressive strength for the concrete mix. Using the compressive strength vs. water/cement ratio chart for the non - air-entrained concrete, calculate the water-cement ratio necessary for the mix.
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