CRACK DEVELOPMENT IN CONCRETE WITH CLOSELY-SPACED REINFORCEMENT AND IN SIMILAR MATERIALS

CRACKS IN BRITTLE HETEROGENOUS MATERIALS ARE DEFINED IN TERMS OF THEIR STABILITY, AND FORMULAE ARE DERIVED FOR IMPROVING THE ENERGY BALANCE OF A DANGEROUS STRUCTURAL CRACK BY THE EFFECT OF CLOSELY-SPACED REINFORCEMENT, AS WELL AS FOR THE CORRESPONDING INCREASE IN TENSILE OR BENDING STRENGTH. THE FAVORABLE EFFECT OF REINFORCEMENT DEPENDS DIRECTLY ON THE BOND AND THE DEGREE OF REINFORCEMENT, INVERSELY ON YOUNG'S MODULUS AND THE CRITICAL ENERGY RELEASE RATE OF THE MATRIX, AND THE DEGREES OF REINFORCEMENT BEING EQUAL, ON THE CROSS-SECTIONAL AREA OF THE REINFORCING BARS (AND THUS ALSO ON THEIR SPACING). CONTRARY TO EXPECTATION, THE EFFECT IS INDEPENDENT OF YOUNG'S MODULUS OF THE REINFORCEMENT WHICH, HOWEVER, MUST HAVE ADEQUATE TENSILE STRENGTH TO PREVENT PREMATURE FAILURE FROM TAKING PLACE. /AUTHOR/

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  • Accession Number: 00209877
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 19 1973 12:00AM