Design for Strength Variability: Testing and Effects on Cracking in RCC and Conventional Concretes

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Title: Design for Strength Variability: Testing and Effects on Cracking in RCC and Conventional Concretes

Author(s): Erbest K. Schrader

Publication: Special Publication

Volume: 104

Issue:

Appears on pages(s): 1-26

Keywords: coefficient of variation; compressive strength; concretes; cracking (fracturing); fresh concretes; mix proportioning; quality control; roller compacted concrete; shrinkage; strength; tests; thermal stresses; variability; Design

Date: 10/1/1987

Abstract:
ACI and ASTM standards require an overdesign factor to be added to the design strength to account for variability in the mix. A high variability necessitates an average strength considerably higher than the design strength. There are two key problems wit