CRACKING OF CONCRETE

THE CRACKING OF CONCRETE IN HIGHWAY PAVEMENTS AND STRUCTURES IS UNDESIRABLE SINCE CRACKING OF THE CONCRETE IS ASSOCIATED WITH THE DETERIORATION OF BOTH THE CONCRETE AND REINFORCING STEEL. MANY STUDIES ON THE PHENOMENON OF CRACKING IN PLAIN AND REINFORCED CONCRETE HAVE BEEN CONDUCTED; HOWEVER, THESE INVESTIGATIONS HAVE CORRELATED THE CRACKING OF CONCRETE WITH VARIOUS PARAMETERS OF THE CONCRETE AND THE ENVIRONMENT, BUT HAVE NOT CONSIDERED THE MECHANISM OF CRACKING. A THREE-PHASE INVESTIGATION WAS UNDERTAKEN TO PROVIDE A BETTER UNDERSTANDING OF THE INITIATION AND GROWTH OF CRACKS IN CONCRETE, WHICH IS ESSENTIAL IF CRACKING OF CONCRETE STRUCTURES IS TO BE CONTROLLED. THE EFFECT OF SEVERAL CONCRETE PARAMETERS ON THE FRACTURE TOUGHNESS (MATERIAL'S RESISTANCE TO PROPAGATION OF AN EXISTING FLAW) IS PRESENTED. A SYSTEMS-TYPE ANALYSIS IS PRESENTED TO DESCRIBE THE COMPLEX CRACKING MECHANISM IN CONCRETE STRUCTURES, AND MODELS ARE DEVELOPED FOR STUDYING CRACKING IN CONCRETE BEAMS AND RIGID PAVEMENTS. AN APPROXIMATE SOLUTION FOR THE PROBLEM OF SHRINKAGE STRESSES IN PLAIN AND REINFORCED CONCRETE MEMBERS WHICH ARE EXTERNALLY LOADED IS DEVELOPED. /AUTHOR/

  • Supplemental Notes:
    • No. 504, 40 pp
  • Corporate Authors:

    University of Illinois, Urbana-Champaign

    Urbana, IL  USA  61801

    Illinois Department of Transportation

    Division of Highways, 2300 South Dirksen Parkway
    Springfield, IL  USA  62764

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Naus, D
    • Rejali, H M
    • Lott, J L
    • Kesler, C E
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00212079
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Ihr-92
  • Files: TRIS, USDOT
  • Created Date: Jul 14 1970 12:00AM