GEOSYNTHETIC WITH IN-PLANE DRAINAGE AS REINFORCEMENT IN POORLY DRAINING SOIL

The interest in the use of geosynthetic as soil reinforced in poorly-draining soil has been growing, because this technology cost effective and sustainable as well. In this article, the use of geosynthetic with in-plane drainage (paradrain) was studied and this paper aimed to describe the behavior of the pore pressure during the consolidation time and analyze the efficiency of the paradrain. Two kinds of geosynthetic were used: paradrain and paragrid (w/o drainage system). The pullout test was used to obtain the pullout strength and displacements of the geosynthetics and pore pressure developed in the soil as well. The consolidation time ranged from 5 to 20 minutes in order to have different initial pore pressure values. It was found that the pore pressure reaches its highest value at the beginning of the consolidation. Moreover, the higher the initial pore pressure is, the more efficient the paradrain is.