NONDESTRUCTIVE TESTING OF CONCRETE BY WAVE VELOCITY METHODS: A LABORATORY AND FIELD STUDY

AN INVESTIGATION WAS CONDUCTED TO DETERMINE WHETHER THE COMPRESSIVE STRENGTH AND MODULUS OF ELASTICITY OF CONCRETE COULD BE DETERMINED FROM THE VELOCITY OF AN ELASTIC COMPRESSION WAVE TRAVELING THROUGH IT. THE ELASTIC WAVE VELOCITIES WERE USUALLY DETERMINED BY THE SEISMIC METHOD. TWO COMPARISONS BETWEEN SEISMIC VELOCITIES AND ELASTIC WAVE VELOCITIES DETERMINED BY THE SONISCOPE METHOD ARE PRESENTED. A CORRELATION BETWEEN THE SEISMIC VELOCITY AND COMPRESSIVE STRENGTH OF SLABS AND BEAMS CONSTRUCTED OF CONCRETE CONTAINING SAN GABRIEL DRAINAGE AGGREGATE WAS DEVELOPED. THE RATE OF CHANGE OF WAVE VELOCITY TO COMPRESSIVE STRENGTH WAS UNDESIRABLY SMALL. THIS CORRELATION IS NOT NECESSARILY VALID FOR CONCRETE MADE WITH AGGREGATE FROM OTHER SOURCES. IT WAS ALSO CONCLUDED THAT SEISMIC VELOCITIES MAY BE INFLUENCED BY THE PRESENCE OF REINFORCING STEEL. IT WAS OBSERVED THAT CHANGES IN TEMPERATURE IN THE 2-TO 60-C RANGE HAVE NEGLIGIBLE EFFECT ON THE SEISMIC VELOCITY OF CONCRETE. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 12-19
  • Monograph Title: Nondestructive testing of concrete
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00214125
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 20 1972 12:00AM