00000nam 2200000za 4500 9.866674 CaOODSP 20221107162115 m o d f cr ||||||||||| 190107s1977 onca ob f000 0 eng d 0660009951 (print) CaOODSP eng n-cn--- M38-13/77-25E-PDF M38-14/3-1977-1 Pit slope manual. Supplement 3-1, Laboratory classification tests [electronic resource]. Ottawa : CANMET, Energy, Mines and Resources Canada, c1977. 31 p. : ill. CANMET report ; 77-25 Cover title. "This supplement has been prepared as part of the Pit Slope Project of the Mining Research Laboratories, Canada Centre for Mineral and Energy Technology, Energy, Mines and Resources Canada." "Minerals Research Program, Mining Research Laboratories." "Gyenge, M." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. "Tests for physical properties, index properties and uniaxial strength of the rock substance are described in this supplement. These tests are used mainly for classification; uniaxial strength may be used directly in stability analysis. The water content test is based on accurate weighing of a rock sample before and after oven drying. Porosity is determined by measuring the displacement in water of a sample sealed with paraffin wax. Swelling pressure and swelling strain indexes are measured in an apparatus similar to the soil consolidation test machine. The slake durability index measures the disintegration of a sample when agitated during two cycles of drying and wetting. Uniaxial strength and failure strain are determined from stress-strain measurements while loading to failure. The point load strength index is measured in an apparatus that subjects the specimen to opposed point loads. Tensile strength is determined from the Brazilian test"--Abstract. Slopes (Soil mechanics) Strip mining Gyenge, M. Canada. Energy, Mines and Resources Canada. Canada Centre for Mineral and Energy Technology. Minerals Research Program (Canada) Mining Research Laboratories (Canada) CANMET report ; 77-25. (CaOODSP)9.852792 PDF 1.88 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-13/M38-13-77-25-eng.pdf 307114