Strength property of concrete using recycled aggregate and high-volume fly ash

Table 1 shows the materials and Table 2 shows the foreign matters ratio of the recycled coarse aggregate. The recycled coarse aggregate contained about 11% impurities by mass ratio. The recycled coarse aggregate in this study was standardized recycled aggregate class Middle-quality by JIS (Recycled aggregate concrete using recycled aggregate class M). The recycled fine aggregate in this study was standardized Recycled aggregate class Low-quality by JIS (Recycled aggregate concrete using recycled aggregate class L).