Abstract：This paper investigates the effects of different substitution ratios of recycled concrete aggregates on the dimensional stability and durability of concrete containing fly ash. Compared with fine recycled concrete aggregates, using coarse recycled concrete aggregates resulted in higher residual compressive strength after dry-wet cycles and freeze-thaw cycles. The free drying shrinkage of concrete using fine recycled concrete and coarse recycled concrete aggregates significantly increased by 76% and 82% respectively, while the crack width of constrained drying shrinkage decreased by 19.7% and 14.1% respectively.
2025, Vol. 0 
