Accession Number : AD0763189

Title :   Laboratory Evaluation of an in situ Torsional Shear Device.

Descriptive Note : Final rept.,

Corporate Author : CORPS OF ENGINEERS OMAHA NEBR MISSOURI RIVER DIV LAB

Personal Author(s) : Butler,Dwain K. ; Bruhn,Robert W.

Report Date : JUL 1973

Pagination or Media Count : 93

Abstract : Results of a laboratory evaluation of a commercially available In Situ Torsional Shear Testing Device are presented. Apparatus was constructed to accommodate the torsional shear device in the laboratory, and seven tests were made on a remolded clay shale material. The immediate purpose of the laboratory evaluation was to determine if the torsional shear device could be used to define the residual strength parameters of clay seams or zones of weakness in rock on the basis of short duration (one day) tests. It is thought that the remolded clay shale material simulates the type of material found in situ in seams and gouge zones. (Modified author abstract)

Descriptors :   (*SOIL MECHANICS, *TEST EQUIPMENT), SHEAR STRESSES, TORSION, MOISTURE, PLASTIC PROPERTIES, EXPERIMENTAL DATA, TEST METHODS

Subject Categories : Soil Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE