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Design of geotextile reinforced paved roads and parking areas
46A carry, shear stress which would otherwise be applied to the soft subgrade. Design charts are presented to assist in the selection of depth of granular fill.
the soil-reinforcement interface. Stress transfer betv, een sod and reinforcement and selection of optimum reinforcement stiffness are discussed.
921353 Design of geotextile reinforced paved roads and parking areas Sellmeijer, J B Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 V1, P177-182. Publ Rotterdam." A A Balkema, 1990
921357 Filtering action of nonwoven geotextites under dynamic loading McMorrow, J Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 V1, P233-238. Publ Rotterdam: A A Balkema. 1990
A model is presented for the behaviour of a soil/geotextile/aggregate system, based on combination of membrane section and lateral restraint. Equilibrium conditions are met for membrane and geotextile. The aggregate is considered as elastoplastic, which allows the use of the concept of mobilised friction to control the degree of strain. This design approach indicates smaller deflections on loading than when membrane action only is considered. 921354 Dynamic loading of geotextile/soil-systems Floss, R; Laier, H; Brau, G Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 Atay-I June 1990 VI, P183-188. Publ Rotterdam: A A Balkema, 1990 A laboratory test rig has been developed to study the behaviour under static or dynamic loading of geosynthetics used in roads as separation and filtration layers. A 700mm square section with base soft soil and granular upper layer separated by a variety of commercially available geotextiles has been examined. Effects of number and frequency of load cycles and of geotextile type on migration of fine particles and change in geotextile properties are discussed. 921355 Clogging of geotextiles under pumping loads Lafleur, J; Rollin, A L; Mlynarek, J Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-i June I990 VI, P189-193. Publ Rotterdam: A A Balkema, 1990 Dynamic consolidation tests were carried out to simulate pumping loads acting on coarse aggregates separated from fine subgrade soils by a geotextile. The amount of soil migrating was most influenced by nature and size of the subgrade particles and size of aggregate particles. Permeability of the geotextile decreased by a factor of up to 12, the decrease being greater for clay subgrades than for silt at a given clogging level. Large settlements and less uniform distribution of clogging were seen as aggregate size increased. 921356 Finite element studies of the mechanics of reinforced unpaved roads Burd, H J; Brocklehurst, C J Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 VI. P217-221. Publ Rotterdam: .4 A Balkema, 1990 Proposed mechanisms of reinforcement under monotonic loading of a reinforced, unpaved road are outlined. The small displacement formulation of the code OXFEM is used to examine the effects of reinforcement stiffness on reinforcement performance under plane strain conditions. Stiffness has little effect on the load-deformation response of the road, but significant influence on magnitude and nature of shear stress at ~
Laboratory tests were used to assess the separating ability of a range of nonwoven geotextiles under loading conditions simulating those of the filter separating the cohesive subgrade and ballast on a railway track. Parametric tests were used to investigate the main factors controlling separation. The ability of the material to build up a filter layer appears important for fine soils under dynamic loading. The more flexible and conformable geotextiles are superior in this aspect. Some initial field tests are reported. 921358 Bending and tensile reinforcement of unbound roads McGown, A; Andrawes, K Z; Werner, G; Yusuf, Z Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 VI, P239-246. Publ Rotterdam: A A Balkema. 1990 Monotonic loading tests were carried out of footings on a sand layer over soft clay, unreinforced and reinforced with geotextile or geotextile plus bamboo rods. Bearing capacity of the unreinforced subgrade is increased by up to 300% if geotextile and rods are used. The rods act as tension and bending reinforcement. The geotextile in this case acts primarily in separation and filtration, spreading the load immediately beneath the rods and acting as a local tension membrane. The results are used to formulate design recommendations. 921359 Effect of vertical drain barrier on road behaviour in freezethaw periods Perrier, H; Dupas, A; Perfetti, J; Thevenet, P Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-1 June 1990 V1, P339-344. Publ Rotterdam: A A Balkema, 1990 Roads on frost susceptible soils are likely to sustain damage during freeze thaw cycles. One primary cause is the inability of upper thawed layers to drain, because of underlying frozen soil, which results in loss of bearing capacity. The application of vertical geotextile drains at the edge of the pavement to counter this problem has been examined. Laboratory model tests and simulations using the finite element code GELSOL are described. The vertical drain produces a discontinuity in the frost table at the start of thaw, which enables the saturated thawed layers to drain. 921360 Overview of haulroads at Syncrude Canada Limited Van Wieren, L W; Anderson, H M Proc 2nd International Symposium on Mine Planning and Equipment Selection,Calgary, 7-9 November 1990 P283-289. Publ Rotterdam: A A Balkema, 1990 Most of the haulage routes are over exposed oil sands and disturbed overburden, weak and variable materials. Very high rolling resistance on these materials has necessitated construction of haulroads. Truck capacities are in excess of 200 tons.
1992 Pergamon Press plc. Reproduction not permitted
the soil-reinforcement interface. Stress transfer betv, een sod and reinforcement and selection of optimum reinforcement stiffness are discussed.
921353 Design of geotextile reinforced paved roads and parking areas Sellmeijer, J B Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 V1, P177-182. Publ Rotterdam." A A Balkema, 1990
921357 Filtering action of nonwoven geotextites under dynamic loading McMorrow, J Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 V1, P233-238. Publ Rotterdam: A A Balkema. 1990
A model is presented for the behaviour of a soil/geotextile/aggregate system, based on combination of membrane section and lateral restraint. Equilibrium conditions are met for membrane and geotextile. The aggregate is considered as elastoplastic, which allows the use of the concept of mobilised friction to control the degree of strain. This design approach indicates smaller deflections on loading than when membrane action only is considered. 921354 Dynamic loading of geotextile/soil-systems Floss, R; Laier, H; Brau, G Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 Atay-I June 1990 VI, P183-188. Publ Rotterdam: A A Balkema, 1990 A laboratory test rig has been developed to study the behaviour under static or dynamic loading of geosynthetics used in roads as separation and filtration layers. A 700mm square section with base soft soil and granular upper layer separated by a variety of commercially available geotextiles has been examined. Effects of number and frequency of load cycles and of geotextile type on migration of fine particles and change in geotextile properties are discussed. 921355 Clogging of geotextiles under pumping loads Lafleur, J; Rollin, A L; Mlynarek, J Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-i June I990 VI, P189-193. Publ Rotterdam: A A Balkema, 1990 Dynamic consolidation tests were carried out to simulate pumping loads acting on coarse aggregates separated from fine subgrade soils by a geotextile. The amount of soil migrating was most influenced by nature and size of the subgrade particles and size of aggregate particles. Permeability of the geotextile decreased by a factor of up to 12, the decrease being greater for clay subgrades than for silt at a given clogging level. Large settlements and less uniform distribution of clogging were seen as aggregate size increased. 921356 Finite element studies of the mechanics of reinforced unpaved roads Burd, H J; Brocklehurst, C J Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 VI. P217-221. Publ Rotterdam: .4 A Balkema, 1990 Proposed mechanisms of reinforcement under monotonic loading of a reinforced, unpaved road are outlined. The small displacement formulation of the code OXFEM is used to examine the effects of reinforcement stiffness on reinforcement performance under plane strain conditions. Stiffness has little effect on the load-deformation response of the road, but significant influence on magnitude and nature of shear stress at ~
Laboratory tests were used to assess the separating ability of a range of nonwoven geotextiles under loading conditions simulating those of the filter separating the cohesive subgrade and ballast on a railway track. Parametric tests were used to investigate the main factors controlling separation. The ability of the material to build up a filter layer appears important for fine soils under dynamic loading. The more flexible and conformable geotextiles are superior in this aspect. Some initial field tests are reported. 921358 Bending and tensile reinforcement of unbound roads McGown, A; Andrawes, K Z; Werner, G; Yusuf, Z Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-I June 1990 VI, P239-246. Publ Rotterdam: A A Balkema. 1990 Monotonic loading tests were carried out of footings on a sand layer over soft clay, unreinforced and reinforced with geotextile or geotextile plus bamboo rods. Bearing capacity of the unreinforced subgrade is increased by up to 300% if geotextile and rods are used. The rods act as tension and bending reinforcement. The geotextile in this case acts primarily in separation and filtration, spreading the load immediately beneath the rods and acting as a local tension membrane. The results are used to formulate design recommendations. 921359 Effect of vertical drain barrier on road behaviour in freezethaw periods Perrier, H; Dupas, A; Perfetti, J; Thevenet, P Proc 4th International Conference on Geotextiles, Geomembranes and Related Products, The Hague, 28 May-1 June 1990 V1, P339-344. Publ Rotterdam: A A Balkema, 1990 Roads on frost susceptible soils are likely to sustain damage during freeze thaw cycles. One primary cause is the inability of upper thawed layers to drain, because of underlying frozen soil, which results in loss of bearing capacity. The application of vertical geotextile drains at the edge of the pavement to counter this problem has been examined. Laboratory model tests and simulations using the finite element code GELSOL are described. The vertical drain produces a discontinuity in the frost table at the start of thaw, which enables the saturated thawed layers to drain. 921360 Overview of haulroads at Syncrude Canada Limited Van Wieren, L W; Anderson, H M Proc 2nd International Symposium on Mine Planning and Equipment Selection,Calgary, 7-9 November 1990 P283-289. Publ Rotterdam: A A Balkema, 1990 Most of the haulage routes are over exposed oil sands and disturbed overburden, weak and variable materials. Very high rolling resistance on these materials has necessitated construction of haulroads. Truck capacities are in excess of 200 tons.
1992 Pergamon Press plc. Reproduction not permitted