Optimizing the Geogrid Reinforcement of Rail Track Ballast

Although the use of high stiffness polymer geogrids to reinforce rail ballast has been practiced since the early '80s, the basic mechanisms involved in the reinforcing action have not been well understood. A wide ranging investigation was conducted with teh support of the Royal Society and several companies to optimize the design of geogrid to give best performance in reducing the rate of settlement caused by railway vehicle loading.