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Geotechnical properties of pulverized fuel ash as a reclamation fill
342A 936072 Aspect ratio correction factors for soiicrete blocks Heathcote, K A; Jankulovski, E
Trans Inst Engrs Aust Civ Engng VCE34, N4, Dec 1992, P309-312 A series of 48 soilcrete specimens was prepared from a mixture of sand and clay plus about 8% cement. Length and width were roughly 45mm whilst height varied from 12.5-298mm. A relation between aspect ratio and uniaxial compressive strength has been derived and compared to that in the relevant Australian Code. Blocks with aspect ratio less than 0.5 showed higher strength than expected. The use of a standard size specimen when testing soilcrete blocks is suggested.
936073 Determination of waste material properties by field tests Matys, M; Dovicin, P
Proc 3rd International Symposium on Field Measurements in Geomechanics, Oslo, 9-11 September 1991 V2, P537-544. Publ Rotterdam." A A Balkema, 1991 Disposal of waste materials via tailings dams is common. In order to prevent failures and accompanying pollution it is necessary to know the mechanical properties of the wastes. A series of qualitative CPT and logging tests and quantitative pressuremeter, radiometric, and screw plate tests has been carried out in situ on mine waste and fly ash tailings. This removes the problem of preparing representative laboratory samples. Results have been used to assess tailings dam slope stability.
936074 Behaviour of rough bolted joints in direct shear tests Egger, P; Zabuski, L
Proc 7tk ISRM International Congress on Rock Mechanics, Aachen, 16-20 September 1991 V2, P1285-1288. Publ Rotterdam: A A Balkema, 1991 Model joints of concrete with surfaces of regular teeth inclined at 17 deg and reinforced with 1 or 2 untensioned bolts of diameter 2.5-5mm perpendicular to the shearing direction were subject to direct shear tests. A special test device was used with no external normal forces applied, simulating conditions for slope stabilisation in stratified hard rock. A simple theoretical expression to describe the influence of bolts was successfully verified.
936O75 Strength and suction changes in unsaturated loess Li, J, Hardcastle, J H
Proc 28tk Symposium on Engineering Geology and Geotechnical Engineering, Boise, 1-3 April 1992 P424-435. Publ Pocatello: Idaho State University, 1992 A test program is described which shows that strength changes of eastern Washington loess due to a range of possible moisture changes can be estimated from as few as 3 triaxiai or direct shear tests on the unsaturated material. Angle of internal friction is practically independent of water content. Total stress cohesion intercept and bearing capacity of the unsaturated loess vary with water content in a manner which can be predicted on the basis of matrix suction and a friction angle of Fredlund et al (1978). Properties of eastern Washington loess are compared to those of other central USA loess soils.
936076 Geotechnical properties of pulverized fuel ash as a reclamation fill Li, K S; Dutton, C
Proc Ninth Asian Regional Conference on Soil Mechanics and Foundation Engineering, Bangkok, 9-13 December 1991 VI . P405-408. Publ Thailand." Southeast Asian Geotechnical Society, 1991 PFA has been used as a backfill for immersed tunnel units in Hong Kong but surplus is deposited as a low density slurry in waste lagoons. Samples have been retrieved from the fill sites and a filled waste lagoon for laboratory examination and field monitoring of the fills has been carried out. Consolidation, strength, and settlement characteristics of the material have been evaluated. Results suggest that the PFA, which is less dense than conventional Hong Kong fill soils, is suitable for a reclamation fill. 936077 Specimen preparation technique for a very stiff clay: a technical note Winter, M G; Horseman, S T
Proc 26th Annual Conference of the Engineering Group of the Geological Society, The Engineering Geology of Weak Rock, Leeds, 9-13 September 1990 P83-85. Publ Rotterdam." A A Balkema, 1993 (Engineering Geology Special Publication No.
8) A technique to prepare high quality triaxial specimens of very stiff clays using standard workshop equipment is presented. Carefully excavated undisturbed block samples are cut with a bandsaw to produce smaller prisms, which are turned on a machine lathe to give cylindrical specimens. Because the lathe can remove very small increments of soil, the dimensions of the smeared zone on the specimen surface are kept to a minimum. 936078 Undrained mechanical behaviour of mudstone Wu, B; Marsden, J R; Hudson, J A
Proc 26th Annual Conference of the Engineering Group of the Geological Society, The Engineering Geology of Weak Rock, Leeds, 9-13 September 1990 P87-94. Publ Rotterdam." A A Balkema, 1993 (Engineering Geology Special Publication No. 8) Triaxial tests carried out on a laminated smectitic mudstone are reported. Isotropic consolidation to simulate in situ conditions prior to excavation of a borehole was followed for selected samples by overconsolidation and deviatoric loading at different angles to the lamination, such that mechanical response likely to occur in material surrounding a borehole during and after excavation could be examined. The overconsolidated material behaves in a similar manner to brittle sedimentary rocks. Peak strength behaviour of the normally- and overconsolidated material can be described by the linear Mohr-Couiomb criterion. 936079 Weak arenaceous materials de Freitas, M H
Proc 26th Annual Conference of the Engineering Group of the Geological Society, The Engineering Geology of Weak Rock, Leeds, 9-13 September 1990 Pl15-123. Publ Rotterdam." A A Balkema, 1993 (Engineering Geology Special Publication No.
8) An overview of the subject of weak arenaceous materials is presented. These materials share common properties with other weak materials, and can probably be considered in a
© 1993 Pergamon Press Ltd. Reproduction not permitted
Trans Inst Engrs Aust Civ Engng VCE34, N4, Dec 1992, P309-312 A series of 48 soilcrete specimens was prepared from a mixture of sand and clay plus about 8% cement. Length and width were roughly 45mm whilst height varied from 12.5-298mm. A relation between aspect ratio and uniaxial compressive strength has been derived and compared to that in the relevant Australian Code. Blocks with aspect ratio less than 0.5 showed higher strength than expected. The use of a standard size specimen when testing soilcrete blocks is suggested.
936073 Determination of waste material properties by field tests Matys, M; Dovicin, P
Proc 3rd International Symposium on Field Measurements in Geomechanics, Oslo, 9-11 September 1991 V2, P537-544. Publ Rotterdam." A A Balkema, 1991 Disposal of waste materials via tailings dams is common. In order to prevent failures and accompanying pollution it is necessary to know the mechanical properties of the wastes. A series of qualitative CPT and logging tests and quantitative pressuremeter, radiometric, and screw plate tests has been carried out in situ on mine waste and fly ash tailings. This removes the problem of preparing representative laboratory samples. Results have been used to assess tailings dam slope stability.
936074 Behaviour of rough bolted joints in direct shear tests Egger, P; Zabuski, L
Proc 7tk ISRM International Congress on Rock Mechanics, Aachen, 16-20 September 1991 V2, P1285-1288. Publ Rotterdam: A A Balkema, 1991 Model joints of concrete with surfaces of regular teeth inclined at 17 deg and reinforced with 1 or 2 untensioned bolts of diameter 2.5-5mm perpendicular to the shearing direction were subject to direct shear tests. A special test device was used with no external normal forces applied, simulating conditions for slope stabilisation in stratified hard rock. A simple theoretical expression to describe the influence of bolts was successfully verified.
936O75 Strength and suction changes in unsaturated loess Li, J, Hardcastle, J H
Proc 28tk Symposium on Engineering Geology and Geotechnical Engineering, Boise, 1-3 April 1992 P424-435. Publ Pocatello: Idaho State University, 1992 A test program is described which shows that strength changes of eastern Washington loess due to a range of possible moisture changes can be estimated from as few as 3 triaxiai or direct shear tests on the unsaturated material. Angle of internal friction is practically independent of water content. Total stress cohesion intercept and bearing capacity of the unsaturated loess vary with water content in a manner which can be predicted on the basis of matrix suction and a friction angle of Fredlund et al (1978). Properties of eastern Washington loess are compared to those of other central USA loess soils.
936076 Geotechnical properties of pulverized fuel ash as a reclamation fill Li, K S; Dutton, C
Proc Ninth Asian Regional Conference on Soil Mechanics and Foundation Engineering, Bangkok, 9-13 December 1991 VI . P405-408. Publ Thailand." Southeast Asian Geotechnical Society, 1991 PFA has been used as a backfill for immersed tunnel units in Hong Kong but surplus is deposited as a low density slurry in waste lagoons. Samples have been retrieved from the fill sites and a filled waste lagoon for laboratory examination and field monitoring of the fills has been carried out. Consolidation, strength, and settlement characteristics of the material have been evaluated. Results suggest that the PFA, which is less dense than conventional Hong Kong fill soils, is suitable for a reclamation fill. 936077 Specimen preparation technique for a very stiff clay: a technical note Winter, M G; Horseman, S T
Proc 26th Annual Conference of the Engineering Group of the Geological Society, The Engineering Geology of Weak Rock, Leeds, 9-13 September 1990 P83-85. Publ Rotterdam." A A Balkema, 1993 (Engineering Geology Special Publication No.
8) A technique to prepare high quality triaxial specimens of very stiff clays using standard workshop equipment is presented. Carefully excavated undisturbed block samples are cut with a bandsaw to produce smaller prisms, which are turned on a machine lathe to give cylindrical specimens. Because the lathe can remove very small increments of soil, the dimensions of the smeared zone on the specimen surface are kept to a minimum. 936078 Undrained mechanical behaviour of mudstone Wu, B; Marsden, J R; Hudson, J A
Proc 26th Annual Conference of the Engineering Group of the Geological Society, The Engineering Geology of Weak Rock, Leeds, 9-13 September 1990 P87-94. Publ Rotterdam." A A Balkema, 1993 (Engineering Geology Special Publication No. 8) Triaxial tests carried out on a laminated smectitic mudstone are reported. Isotropic consolidation to simulate in situ conditions prior to excavation of a borehole was followed for selected samples by overconsolidation and deviatoric loading at different angles to the lamination, such that mechanical response likely to occur in material surrounding a borehole during and after excavation could be examined. The overconsolidated material behaves in a similar manner to brittle sedimentary rocks. Peak strength behaviour of the normally- and overconsolidated material can be described by the linear Mohr-Couiomb criterion. 936079 Weak arenaceous materials de Freitas, M H
Proc 26th Annual Conference of the Engineering Group of the Geological Society, The Engineering Geology of Weak Rock, Leeds, 9-13 September 1990 Pl15-123. Publ Rotterdam." A A Balkema, 1993 (Engineering Geology Special Publication No.
8) An overview of the subject of weak arenaceous materials is presented. These materials share common properties with other weak materials, and can probably be considered in a
© 1993 Pergamon Press Ltd. Reproduction not permitted