IMPACT TESTS OF CONSTRAINED SAND SPECIMENS

A DYNAMIC TRIAXIAL TEST INVOLVING A PENDULUM IMPACT APPARATUS IS DESCRIBED. IT PERMITS DIRECT AND ACCURATE MEASUREMENT OF STRESS AT BOTH ENDS OF THE SPECIMEN, OVERALL STRAIN, COEFFICIENT OF RESTITUTION AND ENERGY LOSS DURING IMPACT. DRY OTTAWA SAND WAS USED. A CYLINDRICAL SAMPLE, ENCLOSED IN A RUBBER MEMBRANE AND EVACUATED, WAS MOUNTED HORIZONTALLY ON ONE PENDULUM AND HIT BY A SECOND PENDULUM. THE METHOD HAS THE DISADVANTAGE THAT STRESS OR STRAIN HISTORY CANNOT BE CONTROLLED INDEPENDENTLY OF SPECIMEN RESPONSE. /RRL/

  • Supplemental Notes:
    • Vol5, No3, PP 111-118, 16FIG, 1TAB, 1PHOT, 8REF
  • Authors:
    • Selig, E T
    • Vey, E
  • Publication Date: 0

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Filing Info

  • Accession Number: 00228726
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 15 2004 2:37AM