GIANT MACHINE TO TEST ROCKFILL MATERIALS

THE CALIFORNIA DEPARTMENT OF WATER RESOURCES IS COMPLETING CONSTRUCTION OF WHAT WILL BE THE LARGEST SHEAR-TESTING MACHINE IN THE UNITED STATES. THE MACHINE WILL BE USED TO DETERMINE SHEAR-STRENGTH PARAMETERS FOR ROCK-AND-GRAVEL-FILL MATERIALS USED IN HIGH EMBANKMENTS CONTAINING MAXIMUM PARTICLE SIZES UP TO 9 IN. IN DIAMETER. THE ASSEMBLED TEST SAMPLE WILL BE EITHER A CYLINDRICAL SECTION 3 FT IN DIAMETER AND 7.5 FT HIGH OR A RECTANGULAR SECTION APPROXIMATELY 5 FT LONG, 2 FT THICK AND 5 FT HIGH. THE MACHINE'S 22-FT-HIGH FRAME SUPPORTS A 3.5-FT-DIA HYDRAULIC CYLINDER, WHICH PRODUCES MORE THAN 4,000,000 LB OF VERTICAL LOAD TO TEST SAMPLES TO FAILURE. THE UNIVERSITY OF CALIFORNIA WILL OPERATE THE FACILITY, WHICH IS LOCATED AT ITS FIELD STATION AT RICHMOND, CALIF. CALIBRATION AND TESTING OF THE MACHINE WILL BE PERFORMED THIS SPRING. /ARTICLE/

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    • Vol 38, No 4, P 102, 1 FIG
  • Publication Date: 0

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  • Accession Number: 00229132
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 2004 2:38AM