| 摘要 |
PURPOSE:To use effectively industrial wastes as roadbed materials, by finely grinding volcaniclastic rocks, sedimentary rocks such as mudstone or shale to give them a specified size-distribution and further mixing them with metal oxides having a specified size-distribution. CONSTITUTION:Volcaniclastic rocks and sedimentary rocks such as mudstone or shale are finely ground to have a size-distribution of almost at most 2mm for a main substance and further metal oxides having a size-distribution of almost at most 2mm are combined with the ground rocks as a reinforcing materials to use for roadbed materials. As a result, sedimentary rocks and the like which are regarded as industrial wastes can be effectively utilized as cheap roadbed materials and also good quality-igneous rocks can be re-ground after mining of the sedimentary rocks or the like. |
