Pullout behaviour of danified reinforcements

Abstract

This paper studies the influence of reinforcement damage on the soil-reinforcement interaction mechanism by analysing the results of eleven pull-out tests carried out with a HDPE uniaxial geogrid confined by a well graded very gravely sand.

ln one test the geogrid was undamaged and in the other ten the geogrid was pre-damaged in the laboratory. Ali the tests were carried out for the same test conditions and procedures.

Following the physical and mechanical characterisation of the materials used, the damage configurations considered are described. Based on the pull-out test results the role of damage configurationon the soil-geogrid interaction mechanism is discussed. Finally, some general conclusions are put forward.