techniques have found technical precautions which can be taken to mitigate the risk of disaster. For example, when Ontario's Highway 416 had to pass through a quick clay deposit near Nepean, lighter fill materials such as polystyrene were used for the road bed, vertical wick drains were inserted along the route and groundwater cutoff walls were built under the highway to limit water infiltration into the clay. See also Clay chemistry Clay-water interaction Critical state soil mechanics DLVO theory, model for aggregation of aqueous dispersions Effective stress Electrical double layer, (EDL) Geomechanics Interface and colloid science Non-Newtonian fluid Quicksand Screening effect Shear strength (soil) Shielding effect Terzaghi's principle Urban Search and Rescue In popular culture The 1967 novel Landslide by Desmond Bagley, tells the story of a quick-clay landslide in Canada. The book was also adapted into a 1992 television film by the same name, directed by Jean-Claude Lord, and starring Anthony Edwards. References External links Rissa Landslide, by University of Washington: short synopsis with link to video clips Clay Colloidal chemistry Geological hazards Glacial deposits Landslides Sediments Soil mechanics Types of soil