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Influence of number of cycles on strain. Technical note
45A
Compressibility, swelling and consolidation See also: 803065 803076 ENGINEERING PROS~L~MS ASSOCIATED WITH EXPANSIVE CLAYS FROM ROMANIA Popescu, M E Engng Geol, V14, NI, June 1979, 1:'43-53 The differences between swelling potential relationships, obtained by two different methods are presented. Swelling pressure tests were made using available standard teeh~ques, as well as specially developed cell pressure eq~dpment. Attention is drawn to the stages of the shrinkage process as related to soil structure. In soils with an anisotropic structure, the directional variation of shrinkage strains is elliptical in shape, with the maximum shrinkage normal to particle erientation. The engineering aspects of the results are discussed briefly. 803077 USE OF A PSYCHROMEPRIC METHOD IN TRIAXIAL TESTS ON AN UNSATURATED LOAM (IN FRENCH) Verbrugge, J C Can Geotech J, V15, N4, Nov 1978, P501-509 803078 CONSOLIDATION DUE TO SHEAR LOADS DISTRIBDTsD OVER A RECTANGULAR AREA Babu Shankar, N; Sarma, K S; Ratnam, M V Int J Num Anal Meth Geomech, V2, N4, OctDec 1978, P329-342 803079 METHOD TO ESTIMATE THE DEGREE OF CONSOLIDATION OF A NON-HOMOGENEOUS CLAY LAYER. TECHNICAL NOTE Ly, B L Int J Num Anal Meth Geomeeh, V2, N4, OctDec 1978, P405-409
8o3o8o BENAVIOUR TOWARDS WATES OF ROCKS WRICH ARE m~JACENT TO c o ~ (IN OE~AN) Knatz, H Gluckauf-forschungsh, V40, N2, April 1979, P57-62 Rock deformations which cannot be explained by c~dinary rock mechanics are often caused by water. The author discusses methods of determining capacity for water absorption and rock heaving behaviour, methods which are being used to determine changes in strength, and testing methods far investigating the decc~position of rocks under the influence of water. 803081 FOUNDATIONS ON EXPANSIVE ROCKS IN BRAZIL Da Costa Nunes, A J Proc 4th Congress International Society for Rock Mechanics, Montreux, 2-8 Sept 1979, Vol l, P99-105. Publ Rotterdam, A A Balkema, 1979 Discusses quantification of the phen~nenon, occurrence in Brazil, identification of expansive materials, precautions for foundations on expansive rocks, solutions to the problem of differential erosion, slopes on expansive ground. Treats only expaz~ibJiity due to variation in moisture content. 3~ refs.
803082 DETERMINATION OF THE SWELLING PRESSURE OF CLAYSTONES AND MARLSTONES USING MINERALOGICAL DATA Madsen, F T Proc 4th Congress International Society for Rock Mechanics, Montreux, 2-8 Sept 1979, Vol l, P237-243. Publ Rotterdam, A A Balkema, 1979 803083 WATER UPTAKE AND SWELLING OF MOETMORII~ONITIC CLAY SEAMS IN ROCK Pusch; R Proc 4th Congress International Society for Rock Mechanics, Montreux, 2-8 Sept 1979, Vol i, P273-278. Publ Rotterdam, A A Balkema, 1979
Dynamic properties See also: 803049, 803052 803084 INFLUENCE OF NUMBER OF CYCLES ON STRAIN. TECHNICAL NOTE Khosla, V K; Singh, R D Can Geotech J, V15, N4, Nov1978, P584-592 Reports tests on Ottawa sand to examine the variation of strain with stress level and number of loading cycles, up to i0 million stress cycles. Relates to the design of machine foundations. 803085 NON-LINEAR SEISMIC RESPONSE AND LIQUEFACTION Ziemkiewicz, D C; Chamg, C T; Hintonj H Int J Nt~n Ansi Meth Oeomech, 72, N4, Oct-Dec 1978, P381-404 803086 DYNAMIC RESPONSE OF LAYERED COHESIVE SOIL Oka, F Mem Fac Engng, Kyoto Univ, V40, N3, July 1978 , P136-151 The realistic stress-strain relation of cohesive soil is applied to amslyze the dyrmmic response of a layered cohesive soil system during shear wave propagation. The cohesive soll is treated as a saturated elastic-viscoplastic body. The characteristics method was used for this analysis, and the stress, strain and velocity under the ground were determined from the surface motion.
8o3o87 STRESS WAVE PROPAGATION THROUGH COHESIVE SOIL Akal, K; Oka, F; Kita, K Mere Fac Emgng Kyoto Unlv, 740, N3, July 1978 , P152-168 Reports one-dimensionsl stress wave propagation tests on a consolidated clay in a special triaxial cell. Pore wster pressure was measured. These results are compared with calculations based on a theoretical analysis of stress strain relations, in a cohesive soil. 803088 CONE POINT AND RECORDING SYSTEM FOR ESTIMATING THE DYNAMIC SOUNDING INDEX Lychko, Y M; Kulanhkin, B L Soil Meeh Found Engmg, V15, N3, May-June 1978, P194-197
Compressibility, swelling and consolidation See also: 803065 803076 ENGINEERING PROS~L~MS ASSOCIATED WITH EXPANSIVE CLAYS FROM ROMANIA Popescu, M E Engng Geol, V14, NI, June 1979, 1:'43-53 The differences between swelling potential relationships, obtained by two different methods are presented. Swelling pressure tests were made using available standard teeh~ques, as well as specially developed cell pressure eq~dpment. Attention is drawn to the stages of the shrinkage process as related to soil structure. In soils with an anisotropic structure, the directional variation of shrinkage strains is elliptical in shape, with the maximum shrinkage normal to particle erientation. The engineering aspects of the results are discussed briefly. 803077 USE OF A PSYCHROMEPRIC METHOD IN TRIAXIAL TESTS ON AN UNSATURATED LOAM (IN FRENCH) Verbrugge, J C Can Geotech J, V15, N4, Nov 1978, P501-509 803078 CONSOLIDATION DUE TO SHEAR LOADS DISTRIBDTsD OVER A RECTANGULAR AREA Babu Shankar, N; Sarma, K S; Ratnam, M V Int J Num Anal Meth Geomech, V2, N4, OctDec 1978, P329-342 803079 METHOD TO ESTIMATE THE DEGREE OF CONSOLIDATION OF A NON-HOMOGENEOUS CLAY LAYER. TECHNICAL NOTE Ly, B L Int J Num Anal Meth Geomeeh, V2, N4, OctDec 1978, P405-409
8o3o8o BENAVIOUR TOWARDS WATES OF ROCKS WRICH ARE m~JACENT TO c o ~ (IN OE~AN) Knatz, H Gluckauf-forschungsh, V40, N2, April 1979, P57-62 Rock deformations which cannot be explained by c~dinary rock mechanics are often caused by water. The author discusses methods of determining capacity for water absorption and rock heaving behaviour, methods which are being used to determine changes in strength, and testing methods far investigating the decc~position of rocks under the influence of water. 803081 FOUNDATIONS ON EXPANSIVE ROCKS IN BRAZIL Da Costa Nunes, A J Proc 4th Congress International Society for Rock Mechanics, Montreux, 2-8 Sept 1979, Vol l, P99-105. Publ Rotterdam, A A Balkema, 1979 Discusses quantification of the phen~nenon, occurrence in Brazil, identification of expansive materials, precautions for foundations on expansive rocks, solutions to the problem of differential erosion, slopes on expansive ground. Treats only expaz~ibJiity due to variation in moisture content. 3~ refs.
803082 DETERMINATION OF THE SWELLING PRESSURE OF CLAYSTONES AND MARLSTONES USING MINERALOGICAL DATA Madsen, F T Proc 4th Congress International Society for Rock Mechanics, Montreux, 2-8 Sept 1979, Vol l, P237-243. Publ Rotterdam, A A Balkema, 1979 803083 WATER UPTAKE AND SWELLING OF MOETMORII~ONITIC CLAY SEAMS IN ROCK Pusch; R Proc 4th Congress International Society for Rock Mechanics, Montreux, 2-8 Sept 1979, Vol i, P273-278. Publ Rotterdam, A A Balkema, 1979
Dynamic properties See also: 803049, 803052 803084 INFLUENCE OF NUMBER OF CYCLES ON STRAIN. TECHNICAL NOTE Khosla, V K; Singh, R D Can Geotech J, V15, N4, Nov1978, P584-592 Reports tests on Ottawa sand to examine the variation of strain with stress level and number of loading cycles, up to i0 million stress cycles. Relates to the design of machine foundations. 803085 NON-LINEAR SEISMIC RESPONSE AND LIQUEFACTION Ziemkiewicz, D C; Chamg, C T; Hintonj H Int J Nt~n Ansi Meth Oeomech, 72, N4, Oct-Dec 1978, P381-404 803086 DYNAMIC RESPONSE OF LAYERED COHESIVE SOIL Oka, F Mem Fac Engng, Kyoto Univ, V40, N3, July 1978 , P136-151 The realistic stress-strain relation of cohesive soil is applied to amslyze the dyrmmic response of a layered cohesive soil system during shear wave propagation. The cohesive soll is treated as a saturated elastic-viscoplastic body. The characteristics method was used for this analysis, and the stress, strain and velocity under the ground were determined from the surface motion.
8o3o87 STRESS WAVE PROPAGATION THROUGH COHESIVE SOIL Akal, K; Oka, F; Kita, K Mere Fac Emgng Kyoto Unlv, 740, N3, July 1978 , P152-168 Reports one-dimensionsl stress wave propagation tests on a consolidated clay in a special triaxial cell. Pore wster pressure was measured. These results are compared with calculations based on a theoretical analysis of stress strain relations, in a cohesive soil. 803088 CONE POINT AND RECORDING SYSTEM FOR ESTIMATING THE DYNAMIC SOUNDING INDEX Lychko, Y M; Kulanhkin, B L Soil Meeh Found Engmg, V15, N3, May-June 1978, P194-197