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804045 Recent advances in rock magnetism
62A
Dry, low porosity carbonate rocks with a wide range of texture al~d dolomite content were experimentally deformed at room temperature, strain rate of .0001/s, and cor~ining pressure of 0, 50 and lOOMPa, to evaluate the effects of texture and composition on ultimate strength and ductility. 804038 ELASTO-PLASTIC MODEL FOR UNDRAINED B ~ V I O U R OF HEAVILY OVERCONS~IDATED CLAYS. SHORT COMMUNICATION BanerJee, P K; Stipho, A S Int J Num Anal Meth Geomech, V3, N1, JanMarch 1979, P97-I03 Develops a model to predict the undrained responses of stiff clays. Predicted stress shrain relations are compared with results obtained in undrained triaxial tests. 804039 METHOD FC~ D~IS~RMINATION OF RELAXATION PARAMETERS FOR COALS LIABLE TO ROCK BURSTS FROM THEIR PETROGRAPHIC COMPOSITION (IN POLISH) Kidybinski, A; Hladysz, Z Gornictwo, VB, NS, 1979, P229-239 A more rapid method of determining these parameters has been developed, based on known relations between relaxation velocity and petrographic composition.
Surface properties 8o4o4o ~ I R I C A L
RELATIONSHIP BETWEEN LOs ANGELES ABRASION AND S C ~ T H A M M ~ STRENGTH TESTS WITH APPLICATION TO AGGREGATES AROUND JEDDAH Kazi, A; A1-Mansot~ Q J Engng Geol, V13, N1, 1980, I~5-52 The aggregates tested are of volcanic and plutonic o~Iglns anl are basic to acidic in composition. It was found that the results of compressive strength as determined by the Sclunidt rebound hargner could be used to predict the Los Angeles abrasion test results.
Physico-cbemical properties 8o~4z THERMAL DIFFUSIVITY IN SOLIDS Fanelli, M; Giuseppetti, G Int Water Pcwer Dam Constr, VBl, NS, May 1979,
P42-5o A technique is described, based on the finite element method, to determine the probable value of concrete bulk thermal diffusivity by measured temperatures at the ironer thermometers of a dam. Some examples are illustrated to test the accuracy of the method. The possibility of applying this procedure to identify other physical parameters is also discussed. Auth.
804042 ELEC'FRICAL R E S I S T M T Y
OF OCEANIC BASALTS Drury, M J; Hymdman, R D J Geol~hys Res, V84, NB9, IO A~g 1979, P4537-4545
804043 DIELECTRIC RELAXATIONS OF COAL AND CONDUCTIVE IMPURITIES Alvarez, R; De Paiva, J A C J Geophys Res, V84, NB3, i0 June 1979, P30h9-3056
804041~ T H ~ C O N D U C T M T Y OF CRYSTALLINE ROCKS ASSOCIATED WITH E ~ Y EXTRACTION FROM HOT DRY ROCK GEOTHERMAL SYSTEMS Sibbitt, W L; Dodsonj J G; Tester, J W J Geol~hys Res, V84, NB3, i0 March 1979, PII17-I124 804045 R E C ~ T ADVANCES IN ROCK MAGNETISM Day, R Revs Geophys Space Phys, V17, N2, April 1979, P249-256 R e v i ~ s 4 years of rock magnetism research in N~rth America. 158 refs. 804046 T H E ~ EXPANSION OF A FEW INDIAN GRANITIC ROCKS Ramama, Y V; Sarma, L P Phys Earth Planet Inter, V22, N1, April 1980, P36-4A The dilatmmeter technique was used to stuffy some grar~tlc rocks from the Peninsttlar S~lield and Himslaymm regions of Irzlia (co~mx~nly used for building arzl as mine pillars). The linear coefficient of thermal expansion was found to deper~ on heating rate, crack porosity, thermal cyclimg, mineral composition amd grain orientation. Volume coefficients of expansion and temperature deperglemce of density are also calculated. 804047 PF~(ED TI~MOMAGNETIC CURVES FOR HEMATITEBEARING ROCKS AND CONCENTRATES Duff, B A l~nys Earth Planet Inter, V19, N3, July 1979,
PP1-P4 8o4o48 ~m~MAL EXPANSION OF ROCKS: SOME ~mAstmm~ms AT HIGH PRESSURE Wong, T F; Brace, W F Tectonophysics, V57, 1979, P95-117 Reports tests at 2-38deg C and up to 600MPa confining l~ressure on granite, diabase, marble, limestone, dumite and quartzite, and proposes theoretical models to explain the effects of temperature on the openimg of cracks at high confimimg pressure, and the propagation of open cracks at low pressure i~duced by thermal gradient or internal stresses. 64 refs.
Permeability and capillarity 8o4o49 PHYSICAL PROPERTIES OF WEATHERED GRANITE SOIL PARTICLES AND THEIR ~ F E C T ON PERMEABILITY Matsuo, S; Nishida, K; Sasaki, S Soils Found, V19, N1, March 1979, P13-22 Reports lab tests to examine the relationship between soil permeability amd physical properties such as surface area, specific gravity and grain size. 804050 USE OF THE O~MOTIC TENsIGMET~ TO MEASURE NEGATIVE PORE WATER PRESSURE Baking, K A; Fredlund, D G Geotech Test J, V2, N1, March 1979, P3-10 804051 USE OF POINT DILUTION METHODs IN DmI'EI~MINING THE PERMEABILITIES OF LAND-FILL MATERIALs Lloyd, J W; Rama~than, C; Pacey, N Water S e ~ c e s , ~ 3 , NlOOS, Nov 1979,
P643-846
Dry, low porosity carbonate rocks with a wide range of texture al~d dolomite content were experimentally deformed at room temperature, strain rate of .0001/s, and cor~ining pressure of 0, 50 and lOOMPa, to evaluate the effects of texture and composition on ultimate strength and ductility. 804038 ELASTO-PLASTIC MODEL FOR UNDRAINED B ~ V I O U R OF HEAVILY OVERCONS~IDATED CLAYS. SHORT COMMUNICATION BanerJee, P K; Stipho, A S Int J Num Anal Meth Geomech, V3, N1, JanMarch 1979, P97-I03 Develops a model to predict the undrained responses of stiff clays. Predicted stress shrain relations are compared with results obtained in undrained triaxial tests. 804039 METHOD FC~ D~IS~RMINATION OF RELAXATION PARAMETERS FOR COALS LIABLE TO ROCK BURSTS FROM THEIR PETROGRAPHIC COMPOSITION (IN POLISH) Kidybinski, A; Hladysz, Z Gornictwo, VB, NS, 1979, P229-239 A more rapid method of determining these parameters has been developed, based on known relations between relaxation velocity and petrographic composition.
Surface properties 8o4o4o ~ I R I C A L
RELATIONSHIP BETWEEN LOs ANGELES ABRASION AND S C ~ T H A M M ~ STRENGTH TESTS WITH APPLICATION TO AGGREGATES AROUND JEDDAH Kazi, A; A1-Mansot~ Q J Engng Geol, V13, N1, 1980, I~5-52 The aggregates tested are of volcanic and plutonic o~Iglns anl are basic to acidic in composition. It was found that the results of compressive strength as determined by the Sclunidt rebound hargner could be used to predict the Los Angeles abrasion test results.
Physico-cbemical properties 8o~4z THERMAL DIFFUSIVITY IN SOLIDS Fanelli, M; Giuseppetti, G Int Water Pcwer Dam Constr, VBl, NS, May 1979,
P42-5o A technique is described, based on the finite element method, to determine the probable value of concrete bulk thermal diffusivity by measured temperatures at the ironer thermometers of a dam. Some examples are illustrated to test the accuracy of the method. The possibility of applying this procedure to identify other physical parameters is also discussed. Auth.
804042 ELEC'FRICAL R E S I S T M T Y
OF OCEANIC BASALTS Drury, M J; Hymdman, R D J Geol~hys Res, V84, NB9, IO A~g 1979, P4537-4545
804043 DIELECTRIC RELAXATIONS OF COAL AND CONDUCTIVE IMPURITIES Alvarez, R; De Paiva, J A C J Geophys Res, V84, NB3, i0 June 1979, P30h9-3056
804041~ T H ~ C O N D U C T M T Y OF CRYSTALLINE ROCKS ASSOCIATED WITH E ~ Y EXTRACTION FROM HOT DRY ROCK GEOTHERMAL SYSTEMS Sibbitt, W L; Dodsonj J G; Tester, J W J Geol~hys Res, V84, NB3, i0 March 1979, PII17-I124 804045 R E C ~ T ADVANCES IN ROCK MAGNETISM Day, R Revs Geophys Space Phys, V17, N2, April 1979, P249-256 R e v i ~ s 4 years of rock magnetism research in N~rth America. 158 refs. 804046 T H E ~ EXPANSION OF A FEW INDIAN GRANITIC ROCKS Ramama, Y V; Sarma, L P Phys Earth Planet Inter, V22, N1, April 1980, P36-4A The dilatmmeter technique was used to stuffy some grar~tlc rocks from the Peninsttlar S~lield and Himslaymm regions of Irzlia (co~mx~nly used for building arzl as mine pillars). The linear coefficient of thermal expansion was found to deper~ on heating rate, crack porosity, thermal cyclimg, mineral composition amd grain orientation. Volume coefficients of expansion and temperature deperglemce of density are also calculated. 804047 PF~(ED TI~MOMAGNETIC CURVES FOR HEMATITEBEARING ROCKS AND CONCENTRATES Duff, B A l~nys Earth Planet Inter, V19, N3, July 1979,
PP1-P4 8o4o48 ~m~MAL EXPANSION OF ROCKS: SOME ~mAstmm~ms AT HIGH PRESSURE Wong, T F; Brace, W F Tectonophysics, V57, 1979, P95-117 Reports tests at 2-38deg C and up to 600MPa confining l~ressure on granite, diabase, marble, limestone, dumite and quartzite, and proposes theoretical models to explain the effects of temperature on the openimg of cracks at high confimimg pressure, and the propagation of open cracks at low pressure i~duced by thermal gradient or internal stresses. 64 refs.
Permeability and capillarity 8o4o49 PHYSICAL PROPERTIES OF WEATHERED GRANITE SOIL PARTICLES AND THEIR ~ F E C T ON PERMEABILITY Matsuo, S; Nishida, K; Sasaki, S Soils Found, V19, N1, March 1979, P13-22 Reports lab tests to examine the relationship between soil permeability amd physical properties such as surface area, specific gravity and grain size. 804050 USE OF THE O~MOTIC TENsIGMET~ TO MEASURE NEGATIVE PORE WATER PRESSURE Baking, K A; Fredlund, D G Geotech Test J, V2, N1, March 1979, P3-10 804051 USE OF POINT DILUTION METHODs IN DmI'EI~MINING THE PERMEABILITIES OF LAND-FILL MATERIALs Lloyd, J W; Rama~than, C; Pacey, N Water S e ~ c e s , ~ 3 , NlOOS, Nov 1979,
P643-846