FRACTURE MECHANICS APPLICABILITY TO PORTLAND CEMENT CONCRETE

IN THIS INVESTIGATION, THE APPLICABILITY OF LINEAR- ELASTIC FRACTURE MECHANICS TO PORTLAND CEMENT PASTES, MORTARS, AND CONCRETES WAS DETERMINED BY THE FABRICATION, TESTING, AND ANALYSIS OF PLATE SPECIMENS CONTAINING A PRECAST FLAW. THE RESULTS INDICATE THAT: THE CONCEPTS OF LINEAR-ELASTIC FRACTURE MECHANICS WERE NOT DIRECTLY APPLICABLE TO CONCRETE MATERIALS FOR THE SPECIMEN GEOMETRY CHOSEN AND THUS THE APPLICABILITY OF FRACTURE MECHANICS TO CONCRETE MATERIALS FOR OTHER SPECIMEN GEOMETRICS AND LOADINGS SEEMS QUESTIONABLE; OTHER ANALYTICAL TECHNIQUES SUCH AS NET SECTION STRESS DO NOT APPEAR APPLICABLE AS A FAILURE CRITERION; AND, SPECIMENS TO WHICH STRAIN GAGES WERE ATTACHED INDICATE THAT LARGE LOCALIZED STRAINS OCCUR IN MORTARS AND CONCRETES. A MODEL WAS DEVELOPED WHICH PROVIDES A QUALITATIVE MEASURE OF THE SIZE OF THE MICROCRACKING ZONE WHICH OCCURS IN CONCRETE. EXPERIMENTAL RESULTS ARE CORRELATED WITH THE MODEL.

  • Corporate Authors:

    Construction Engineering Research Laboratory

    Army Corps of Engineers, P.O. Box 4005
    Champaign, IL  USA  61820
  • Authors:
    • Naus, D
  • Publication Date: 1973-3

Media Info

  • Features: Figures; References;
  • Pagination: 13 p.
  • Serial:
    • Issue Number: m-42

Subject/Index Terms

Filing Info

  • Accession Number: 00206070
  • Record Type: Publication
  • Report/Paper Numbers: Tech Manu
  • Files: TRIS
  • Created Date: Sep 17 1973 12:00AM