Use method of industrial caustic dross in treatment of road bed and foundation

The invention an application of applying the industrial alkaline residue to dealing the road subgrade and basal layer, the method includes the following steps: materials preparation; sun-curing and disintegrating the alkaline residue and the on-site soil; determining the best moisture capacity and the maximum dry density of mixture; mixing the layers of the soil according the predetermined ratio uniform and spraying water to reaching the optimum water content; paving and rolling on the spot, the compression of subgrade shallow layer is controlled above 97% and the compression of sub-subbase course and the subbase course are controlled more than 98%; after every layers are rolled, lying a layer of mixture after watering seven days and reaching the design strength requirements. The method applies the alkaline residue to road engineering, because it makes use of industrial residue comprehensively, it reduces the land occupied by alkaline residue, eliminates the environmental pollution cause by alkaline residue, meanwhile the alkaline residue replaces a lot of roadbed and packing materials, so it reduces the construction costs of municipal works and roads and reduces the territorial resources pressure caused by digging out cultivated land.