STUDY OF THE LIQUEFACTION RESISTANCE OF A SATURATED SAND REINFORCED WITH GEOSYNTHETICS

This article presents various tests using a cyclic triaxial instrument , on samples of saturated Hostun RF sand, reinforced with circular she ets of geosynthetic material. Tests performed with different types of geosynthetics of different compressibility, rigidity and roughness cha racteristics indicate a significant increase in liquefaction resistanc e for samples reinforced with compressible, non-woven geotextiles. The undrained behaviour of saturated Hostun RF sand reinforced with non-w oven geotextiles is analysed on the basis of different test series. Th is analysis highlights the influence of reinforcement compressibility on interstitial pressure distribution in the sample, thus showing the role of this type of inclusion in the increase in liquefaction resista nce. (C) 1997 Elsevier Science Limited.