Effect of tire-chips on geotechnical properties of clayey soil

Use of tire-chips in construction projects, such as highway embankments, leachate collection systems, landfill cover, backfill material and similar projects is increasing world wide. This paper presents results of compaction, undrained triaxial and one-dimensional consolidation tests on compacted clay-tire chip mixtures, the tests were carried out with different mixing ration of tire-chips and clay. Laboratory investigations showed that by adding tire-chips in clayey soils, the cohesion of mixture is increased and angle friction is decreased. In addition, the results of consolidation tests indicate that when the tire-chip content increases within the mixtures, compression and swelling indices of the specimens decreases and increases, respectively. These experiments discuss the practical applicability of lightweight geomaterials which are made of tire-chips in civil engineering constructions.

Keywords:

Clay , Consolidation , Pore water pressure , Tire-chips , Undrained triaxial test