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Test fill to failure on soft clay (in Norwegian with english summary)
73A
The proposed model describes the ship,tropic, elasto-plastic, path-dependent, stress- atrainstrength properties of inviscid saturated clays under urglrained loading conditions. The basic principles of the model are presented, the stress-strain relationships for use in finite element analysis are provided, and its versatility demonstrated in a practical example. The model is intended for use in assessing the stresses anl deformations in fourzlation clay beneath offshore structures. 784020 EFFECT OF CYCLIC LOADING ON CLAY ~HAVIOUR Andersen, K H; Brown, S F; Foss, I Paper to Design and Construction of Offshore Structures Conference, London, 27-28 Oct 1976 784021 SHEAR SITRENGTH LIMIT OF PEAT SOILS (IN RUSSIAN) Kovalemko, N P Russia: Minist Vyssh Sredn Spets Obrazov, Izv VIYZ Gorn Zh, V20, N4, 1977, P76-79 784022 FACTORS AFFECTING THE S H F ~ 9Iq~ENGTH OF FROZEN SOIL Ersoy, T; Togrol, E Proc 2nd Int Symp Cold Regions Engineering, Fairbanks, 12-14 Aug 1976, P279-282 784023 CEMEHI~BOUND ROAD MATERIALS: STRENGTH AND ELASTIC PROPERTIES MEASURED IN THE LABORATORY Kolias, S; Williams, R I T Transport and Road Research Lab supplementary report B44, 1978, 66P Tests were carried out on 5 materials ranging from lean concrete to fine-grained soil-cement, emphasis being placed on their behaviour in unl-axial tension. A limited study of fatigue behaviour in tension is also reported. Relation~hips between the various strength parameters are discussed. Exsmlnation of the relative values of modulus and of strergth suggests that cracking in cement-boumd layers is mare likely to occur at early ages, at low cement contents, and for teats taken only on lean concrete, at higher mix water contents. Poorly compacted material also increases susceptibility to cracking. Avail: TRRL, Old Wokingham Road, Crowthorne, Berks, UK 784024 PHYSICAL AND C H ~ C A L CHARACTERISTICS OF AVAII~RT2 MATERIALS FOR FII/LING SUBSURFACE COAL MIh~S Dtunn, J R; Banino, G M; Ernst, W D USBM OFR 151-77, June 1977, 282P Industrial mineral waste samples were subjected to standard tests commonly used in the evaluation of soil a ~ mineral aggregate materials. Measurements of plasticity, liquid limit, arzl gradations indicated a comparative lack of clay minerals. Cementitious reactions between sources of alkali and of silica were found to occur in various mixes of high bulk materials. Strengths of up to 400 psi at 84 days were observed. Emplacement both by turbid flow (or density currents) below water, and by mud flows above water is claimed to be feasible. Avail: h'fIS, Springfield, Va, 22161, USA (PB 274702/AS)
784025 STRAIN RATE EFFECT ON THE STRENGTH OF FROZEN SILT Haynes, F D; Karalius, J A; Kalafut, J US A r ~ Cold Regions Research and Engineerin Lab report RR350, Dec 1975, 27P Uniaxial compression and tension tests were conducted on frozen Fairbanks silt at a temperature of -IOC. A relatively stiff testing machine was operated at a constant dlsplaeemen rate for each test. The tests showed that comPressive strer~hh is very sensitive to strain rate and that tensile strength is relatively insensitive to it. As was fourzl in other investigations, tangent modull increased slightly with greater strain rates. The specific energy increased at higher strain rates for compression tests and decreased slightly for tension tests. For increased strain rates, uni axial compression strength showed no tendency to plateau: nor did the specific energy reach a min~ during uniaxial tensile testing. Avail: NYIS, Springfield, Va, 22161, USA
(ADA 021981) 784026 BASIC BEHAVIOUR OF SCANDINAVIAN S09T CLAYS Larsson, R Linkoping: Swedish Geotechnical Inst report 4, June 1977, 136P The influence of deformation characteristics on shear strength is discussed. A hypothesis for critical stresses leading to plastic deformations and a generalised model for umdrain shear strength and anlsotropy in soft clays is presented. Results from a series of creep test are presented and analysed and current methods of reducing field vane shear stremgth are discussed. Avail: Swedish Geotechnical Inst, Fack, S-5810~ Linkopl rg, Sweden
784O27 METHODS
FOR REDUCING THE UNDRAINED SHEAR STRE~ OF SOFT CLAY Helenelund, K V Linkoping: Swedish Geotechnlcal Inst report 3, May 1977, 60P
Discusses ar~ compares methods for reduction of the undrained shear strength of normally consolidated and slightly overconsolidated cl~ according to field vane tests or fall-cone te~ and discusses the probability of failure and the optim~n factor of safety. Avail: Swedish Geotechnical Inst, Fack, S-5810" Linkoplng, Sweden 784028 RE,ARCH PROJECT TO DETERMINE THE I ~ V I O U R OF CLAY SUBJECTED TO CYCLIC LOADING (IN NORWEGIAN WITCH ENGLISH SUMMARY) Andersen, K H 0slo: Norges Geoteknlske Institutt, puhl ll2j 1976, P2 L-28 784029 TEST FILL TO FAILURE ON SOFt CLAY (IN NORWEGIA~ WITH ENSLISH SUMMARY) Di Biagio, E; Stenhamar, p Oslo: Norges Geoteknlske Institutt s publ ii0, 1976, P9-14
The proposed model describes the ship,tropic, elasto-plastic, path-dependent, stress- atrainstrength properties of inviscid saturated clays under urglrained loading conditions. The basic principles of the model are presented, the stress-strain relationships for use in finite element analysis are provided, and its versatility demonstrated in a practical example. The model is intended for use in assessing the stresses anl deformations in fourzlation clay beneath offshore structures. 784020 EFFECT OF CYCLIC LOADING ON CLAY ~HAVIOUR Andersen, K H; Brown, S F; Foss, I Paper to Design and Construction of Offshore Structures Conference, London, 27-28 Oct 1976 784021 SHEAR SITRENGTH LIMIT OF PEAT SOILS (IN RUSSIAN) Kovalemko, N P Russia: Minist Vyssh Sredn Spets Obrazov, Izv VIYZ Gorn Zh, V20, N4, 1977, P76-79 784022 FACTORS AFFECTING THE S H F ~ 9Iq~ENGTH OF FROZEN SOIL Ersoy, T; Togrol, E Proc 2nd Int Symp Cold Regions Engineering, Fairbanks, 12-14 Aug 1976, P279-282 784023 CEMEHI~BOUND ROAD MATERIALS: STRENGTH AND ELASTIC PROPERTIES MEASURED IN THE LABORATORY Kolias, S; Williams, R I T Transport and Road Research Lab supplementary report B44, 1978, 66P Tests were carried out on 5 materials ranging from lean concrete to fine-grained soil-cement, emphasis being placed on their behaviour in unl-axial tension. A limited study of fatigue behaviour in tension is also reported. Relation~hips between the various strength parameters are discussed. Exsmlnation of the relative values of modulus and of strergth suggests that cracking in cement-boumd layers is mare likely to occur at early ages, at low cement contents, and for teats taken only on lean concrete, at higher mix water contents. Poorly compacted material also increases susceptibility to cracking. Avail: TRRL, Old Wokingham Road, Crowthorne, Berks, UK 784024 PHYSICAL AND C H ~ C A L CHARACTERISTICS OF AVAII~RT2 MATERIALS FOR FII/LING SUBSURFACE COAL MIh~S Dtunn, J R; Banino, G M; Ernst, W D USBM OFR 151-77, June 1977, 282P Industrial mineral waste samples were subjected to standard tests commonly used in the evaluation of soil a ~ mineral aggregate materials. Measurements of plasticity, liquid limit, arzl gradations indicated a comparative lack of clay minerals. Cementitious reactions between sources of alkali and of silica were found to occur in various mixes of high bulk materials. Strengths of up to 400 psi at 84 days were observed. Emplacement both by turbid flow (or density currents) below water, and by mud flows above water is claimed to be feasible. Avail: h'fIS, Springfield, Va, 22161, USA (PB 274702/AS)
784025 STRAIN RATE EFFECT ON THE STRENGTH OF FROZEN SILT Haynes, F D; Karalius, J A; Kalafut, J US A r ~ Cold Regions Research and Engineerin Lab report RR350, Dec 1975, 27P Uniaxial compression and tension tests were conducted on frozen Fairbanks silt at a temperature of -IOC. A relatively stiff testing machine was operated at a constant dlsplaeemen rate for each test. The tests showed that comPressive strer~hh is very sensitive to strain rate and that tensile strength is relatively insensitive to it. As was fourzl in other investigations, tangent modull increased slightly with greater strain rates. The specific energy increased at higher strain rates for compression tests and decreased slightly for tension tests. For increased strain rates, uni axial compression strength showed no tendency to plateau: nor did the specific energy reach a min~ during uniaxial tensile testing. Avail: NYIS, Springfield, Va, 22161, USA
(ADA 021981) 784026 BASIC BEHAVIOUR OF SCANDINAVIAN S09T CLAYS Larsson, R Linkoping: Swedish Geotechnical Inst report 4, June 1977, 136P The influence of deformation characteristics on shear strength is discussed. A hypothesis for critical stresses leading to plastic deformations and a generalised model for umdrain shear strength and anlsotropy in soft clays is presented. Results from a series of creep test are presented and analysed and current methods of reducing field vane shear stremgth are discussed. Avail: Swedish Geotechnical Inst, Fack, S-5810~ Linkopl rg, Sweden
784O27 METHODS
FOR REDUCING THE UNDRAINED SHEAR STRE~ OF SOFT CLAY Helenelund, K V Linkoping: Swedish Geotechnlcal Inst report 3, May 1977, 60P
Discusses ar~ compares methods for reduction of the undrained shear strength of normally consolidated and slightly overconsolidated cl~ according to field vane tests or fall-cone te~ and discusses the probability of failure and the optim~n factor of safety. Avail: Swedish Geotechnical Inst, Fack, S-5810" Linkoplng, Sweden 784028 RE,ARCH PROJECT TO DETERMINE THE I ~ V I O U R OF CLAY SUBJECTED TO CYCLIC LOADING (IN NORWEGIAN WITCH ENGLISH SUMMARY) Andersen, K H 0slo: Norges Geoteknlske Institutt, puhl ll2j 1976, P2 L-28 784029 TEST FILL TO FAILURE ON SOFt CLAY (IN NORWEGIA~ WITH ENSLISH SUMMARY) Di Biagio, E; Stenhamar, p Oslo: Norges Geoteknlske Institutt s publ ii0, 1976, P9-14