| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for efficiently treating a waste material of a sprayed rock wool, which has fallen onto the surface of a floor or the like during execution of the sprayed rock wool. SOLUTION: A semi-dry or dry sprayed rock wool waste material containing, as main components, the rock wool and a cement solidified material is pulverized by using a pulverizer capable of imparting a shear stress against the rock wool, and the obtained finely pulverized substance containing fine rock wool is blended with a cement slurry to be used in the execution of the semi-dry sprayed rock wool. Further, a mixed material for the semi-dry sprayed rock wool or an admixing material for cement comprising the finely pulverized substance mentioned above is also provided.</p> |
