2015 Volume 71 Issue 1 Pages 33-46
In this study, in order to investigate the characteristics of shear and volumetric strain and development of excess pore water pressure for compacted tire chips specimen, a series of drained and undrained monotonic and undrained cyclic triaxial tests were performed. From the results of the monotonic tests, linear development of volumetric strains and excess pore water pressure were observed during loading up to 20% axial strain. It was further observed that the volumetric strain and excess pore water pressure induced by shear loading recovered to zero during unloading. In cyclic triaxial tests of tire chips, there was no marked development of pore water pressure, resulting in non-liquefaction. The on-line pseudo-dynamic response tests were performed aimed at clarifying the earthquake response characteristics of tire chips. The experimental results confirmed the quake-absorbing excess pore water pressure control and seismic isolation effects of tire chips as a geomaterial.