Countermeasure Against Liquefaction using Crushed Tile

Liquefaction is a common phenomenon of the sandy ground in an earthquake. It leads to the floatation of underground structures or subsidence of structure in the ground. Formerly, the phenomenon was associated with the main shock that lasts for a relatively short time. In recent years, however, it has been found that the bearing capacity of soils may also decrease during short-term seismic motions (aftershocks) that occur multiple times in the same way as in a long-term seismic motion. Crushed tiles are abundant in Aichi Prefecture (Japan), a center for the tile industry, and are one of the promising recycling materials for a countermeasure against soil liquefaction. This research investigates the effectiveness of these tiles as a countermeasure against liquefaction for a long-term seismic motion and short-term multiple aftershocks in case of small structures, and confirms their physical and mechanical properties.