| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for producing a regenerated aggregate, capable of regenerating the aggregate having an extremely reduced amount of adhered cement paste from concrete wastes at a low cost by a simple process. SOLUTION: This method for producing a regenerated aggregate comprises crushing concrete wastes into grains having grain particle diameters not larger than the maximum grain diameter of aggregates contained in the concrete wastes, recovering the crushed products having grain diameters of >=5 mm as coarse aggregates and the crushed products having grain diameters of 1.2-5 mm as fine aggregates, respectively, drying the crushed products having grain diameters of 0.15-1.2 mm into a water content of <=3%, grinding the dried products, simultaneously removing the ground powder having grain diameters of <0.15 mm, and subsequently using the grains having grain diameters of 0.15-1.2 mm as fine aggregates.</p> |
