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In-plane permeability of geotextiles
155A 8443O6 In-plane permonbiHty of geotextiles Gerry, B S; Raymond, G P
Geoteck Test J V6, N4, Dec 1983, P181-189 A test method and test results for conducting in-plane permeability tests on geotextiles are presented. When considering the use of geotextiles in railway track rehabilitation, the results of laboratory tests showed that only thick nonwoven geotextiles possess coefficients of in-plane permeability sufficient to maintain satisfactory long term performance. It is recommended that geotextiles for track rehabilitation be thick nonwoven textiles with equivalent opening sizes (EOS) ofless than 40 micron sieve.
These tests showed the presence of quasihomogeneous zones. Finite element analyses were performed to analyse the effects of the discontihuities in the foundation rocks. The superposition of stresses due to self weight and seismic forces showed the predominant influence of discontinuities on the stress-strain field and indicated the need for prestressing anchors.
Groundwater problems 844311 Slurry trenches for containing hazardous wastes Tallard, G
Civ Engng, N Y V54, N2, Feb 1984, P41-45 844307 Notion of geotextlles as separators in roads Ingold, T S; Crowcroft, P
Gromul £ngng VI7, N1, Jan 1984, P27-34 Geotextiles have 4 main functions: reinforcement, drainage, filtration and separation. The author reviews case studies, and laboratory and field studies to try and differentiate between the effects attributable to separation and those allied with other functions. 8443O8 Compaction of bituminous road materials using vibratory rollers Powell, W D; Leach, D
Transport and Road Research Laboratory report LR 1102, 1983, 19P Compaction trials were carried out on dense road base Macadam using modern vibratory rollers of mass 2 to 14 tonnes and the results compared on a pass-for-pass basis with an 8 tonne dead weight roller. The characteristics of dead weight and vibratory rollers that influence compaction are considered and the latter are concluded to give approximately 3% more compaction.
AvML. Transport and Road Research Laboratory, Crowthorne, Berks, UK 8443O9 Shakedown of pavements under moving surface loads Sharp, R W; Booker, J R
UMt~,rsity of Sydaey, School of Civil and Mining Engineering research report NR428, Jan 1983, 56P Procedures for the analysis of shakedown are proposed which model the elastoplastic behaviour of a horizontally-layered continuum subjected to repeated moving loads and permit the incremental process of pavement failure to be considered. The analysis is applied to the results of a comprehensive road test and it is shown that pavement shakedown may be both observed and predicted.
Geological factors of importance in surface structure 844310 Influence of complex geotechnicai conditions on the stressstrain field m r large-span bridge foundations. Static and dynamic analysis Jasarevic, I; Bicanic, N; Vrkljan, M; Saban, B; Grubisic, V; Andric, M
Proc 5tit Congress of the lnternatimmi Society for Rock Moc&mies, Meibomrne, 10-15 April 1983 V1, PC245-C252. Publ Rotterdam." A. A. Baikema, 1983 Extensive geological, geophysical and geotechnical investigations, together with microseismology studies were performed to obtain the geotechnical properties of the bridge foundations.
For the last thirty years slurry trenches have been installed in the US for controlling groundwater seepage and for ten years to prevent groundwater contamination from spreading. Today's state-of-the-art, laboratory testing and practices are considered for soil bentonite trenches and cement bentonite trenches. Also considered are the thin diaphragm system, the jet grouting panel wall and the use of synthetic liners. The installation of a synthetic liner and a drain in the same trench gives an impervious barrier that is chemically resistant and a lcachate collection system around a hazardous waste site.
Influence of dynamic loads due to explosions or earthquakes 844312 Seaquakes: a potential threat to offshore structures Hove, K; Seines, P B; Bungum, H
Norw Geotech last Publ N143, 1982, lOP A number of case studies relating to ships are used to demonstrate the effects of propagating seismic waves in water - known as seaquakes - and the potential effect such waves may have on offshore platforms, especially floating structures. 844313 Dynamic stability of concrete dam foundations Scott, G A; Dreher, K J
Proc 5th Congress of the International Society for Rock Mechanics, Melbourne, 10-15 April 1983 V1, PC227-C233. Publ Rotterdam: A. A. Balkema, 1983 Dynamic finite element analysis of a concrete dam can be used to determine the time-varying resultant forces acting on the potentially unstable foundation rock mass. The potential mode of instability and factor of safety are then determined for each time step of an earthquake. If the factor of safety falls below 1.0, cumulative permanent displacements can be estimated.
Comminution of Rocks 844314 Horizontal deck systems in parallelhole cuts - a possible way of increasing the advance rate of tunnel drilling (In Swedish) Orre, J
Swedish Oetonic Research Foundation report DS 1983:6, 15 Sept 1983, 31P A review of field tests carried out in June 1983 at the LKAB Mine, Malmberget, Sweden, to: (1) develop a drill and blast technique providing maximum advance for a development tunnel face and (2) determine the stemming length and position enabling maximum depth to be achieved by the leading charges and no desensitization of the second explosive deck. Tests were carried out in single holes to determine the length of stemming
Geoteck Test J V6, N4, Dec 1983, P181-189 A test method and test results for conducting in-plane permeability tests on geotextiles are presented. When considering the use of geotextiles in railway track rehabilitation, the results of laboratory tests showed that only thick nonwoven geotextiles possess coefficients of in-plane permeability sufficient to maintain satisfactory long term performance. It is recommended that geotextiles for track rehabilitation be thick nonwoven textiles with equivalent opening sizes (EOS) ofless than 40 micron sieve.
These tests showed the presence of quasihomogeneous zones. Finite element analyses were performed to analyse the effects of the discontihuities in the foundation rocks. The superposition of stresses due to self weight and seismic forces showed the predominant influence of discontinuities on the stress-strain field and indicated the need for prestressing anchors.
Groundwater problems 844311 Slurry trenches for containing hazardous wastes Tallard, G
Civ Engng, N Y V54, N2, Feb 1984, P41-45 844307 Notion of geotextlles as separators in roads Ingold, T S; Crowcroft, P
Gromul £ngng VI7, N1, Jan 1984, P27-34 Geotextiles have 4 main functions: reinforcement, drainage, filtration and separation. The author reviews case studies, and laboratory and field studies to try and differentiate between the effects attributable to separation and those allied with other functions. 8443O8 Compaction of bituminous road materials using vibratory rollers Powell, W D; Leach, D
Transport and Road Research Laboratory report LR 1102, 1983, 19P Compaction trials were carried out on dense road base Macadam using modern vibratory rollers of mass 2 to 14 tonnes and the results compared on a pass-for-pass basis with an 8 tonne dead weight roller. The characteristics of dead weight and vibratory rollers that influence compaction are considered and the latter are concluded to give approximately 3% more compaction.
AvML. Transport and Road Research Laboratory, Crowthorne, Berks, UK 8443O9 Shakedown of pavements under moving surface loads Sharp, R W; Booker, J R
UMt~,rsity of Sydaey, School of Civil and Mining Engineering research report NR428, Jan 1983, 56P Procedures for the analysis of shakedown are proposed which model the elastoplastic behaviour of a horizontally-layered continuum subjected to repeated moving loads and permit the incremental process of pavement failure to be considered. The analysis is applied to the results of a comprehensive road test and it is shown that pavement shakedown may be both observed and predicted.
Geological factors of importance in surface structure 844310 Influence of complex geotechnicai conditions on the stressstrain field m r large-span bridge foundations. Static and dynamic analysis Jasarevic, I; Bicanic, N; Vrkljan, M; Saban, B; Grubisic, V; Andric, M
Proc 5tit Congress of the lnternatimmi Society for Rock Moc&mies, Meibomrne, 10-15 April 1983 V1, PC245-C252. Publ Rotterdam." A. A. Baikema, 1983 Extensive geological, geophysical and geotechnical investigations, together with microseismology studies were performed to obtain the geotechnical properties of the bridge foundations.
For the last thirty years slurry trenches have been installed in the US for controlling groundwater seepage and for ten years to prevent groundwater contamination from spreading. Today's state-of-the-art, laboratory testing and practices are considered for soil bentonite trenches and cement bentonite trenches. Also considered are the thin diaphragm system, the jet grouting panel wall and the use of synthetic liners. The installation of a synthetic liner and a drain in the same trench gives an impervious barrier that is chemically resistant and a lcachate collection system around a hazardous waste site.
Influence of dynamic loads due to explosions or earthquakes 844312 Seaquakes: a potential threat to offshore structures Hove, K; Seines, P B; Bungum, H
Norw Geotech last Publ N143, 1982, lOP A number of case studies relating to ships are used to demonstrate the effects of propagating seismic waves in water - known as seaquakes - and the potential effect such waves may have on offshore platforms, especially floating structures. 844313 Dynamic stability of concrete dam foundations Scott, G A; Dreher, K J
Proc 5th Congress of the International Society for Rock Mechanics, Melbourne, 10-15 April 1983 V1, PC227-C233. Publ Rotterdam: A. A. Balkema, 1983 Dynamic finite element analysis of a concrete dam can be used to determine the time-varying resultant forces acting on the potentially unstable foundation rock mass. The potential mode of instability and factor of safety are then determined for each time step of an earthquake. If the factor of safety falls below 1.0, cumulative permanent displacements can be estimated.
Comminution of Rocks 844314 Horizontal deck systems in parallelhole cuts - a possible way of increasing the advance rate of tunnel drilling (In Swedish) Orre, J
Swedish Oetonic Research Foundation report DS 1983:6, 15 Sept 1983, 31P A review of field tests carried out in June 1983 at the LKAB Mine, Malmberget, Sweden, to: (1) develop a drill and blast technique providing maximum advance for a development tunnel face and (2) determine the stemming length and position enabling maximum depth to be achieved by the leading charges and no desensitization of the second explosive deck. Tests were carried out in single holes to determine the length of stemming