Proposal for Standard Test of Modulus of Rupture of Concrete with Its Size Dependence

  title={Proposal for Standard Test of Modulus of Rupture of Concrete with Its Size Dependence},
  author={Zdenek P. Bazant and Drahomfr Novak}
Recently accumulated test data on the modulus of rupture, as well as analytical studies and numerical simulations, clearly indicate that the flexural strength of concrete, called the modulus of rupture, significantly decreases as the beam size increases. This paper proposes a method to incorporate this size effect into the existing test standards, and focuses particularly on ASTM Standards C 7894 and C 293-94. The proposed method is based on a recently established size effect formula that… CONTINUE READING


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