| 摘要 |
<p>PROBLEM TO BE SOLVED: To solidify and recycle molding sand to be discarded as resources for construction, etc., by solidifying the molding sand by a simple method. SOLUTION: Water is added to the molding sand, in the form of fine powder, to be discarded to previously oxidize the iron-component to be incorporated therein. A prescribed volume of water, cement as a hardener and steel fibers and crushed stone which are reinforcing materials are mixed with the sand after an oxidation treatment and the mixture is kneaded. The mixture after the kneading is put into metal molds and are compression molded to the shape of an interlocking block 1; thereafter, the molding is released from the molds. The interlocking block 1 after the releasing from the mold is aged and solidified by a known method.</p> |
