Composites of polymer/inorganic materials have comprehensive properties and they are widely used in many fields of the industry. In the present work, methacrylate copolymer/silica composite materials were prepared by mixing and blending process. The mechanical properties such as flexural, compressive strength of yield composite were obtained as the function of mixing ratio. The optimized composite materials have been used as quick repair materials in the Chengyu (Chengdu to Chongqing) highway, southwest China. The results showed that the composite material was better than cement concrete rehabilitation, and the traffic could be allowed to open over repaired patches after 1.5-5 hours.