| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To efficiently remove deposits such as mortar etc. while preventing excessive crushing of a recycled aggregate. <P>SOLUTION: A method for producing the recycled aggregate includes: a step of crushing waste concrete; a screening step of screening a crushed product so as to recover the recycled aggregate; and a grinding step of grinding the recovered crushed aggregate so as to remove mortar deposits. Here, a step of continuously emitting abrasive grains is carried out in parallel with a step of dropping the recycled aggregate into an emission zone of the abrasive grains, thereby crushing the abrasive grains into the recycled aggregate to remove the mortar deposits. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
