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研究干燥状态再生细骨料与饱和吸水状态再生细骨料掺量对混凝土性能的影响。结果表明:采用100%干燥状态与饱和吸水状态再生细骨料,1 h坍落度损失分别为160 mm、100 mm,再生细骨料吸水饱和后,可改善混凝土工作性;再生细骨料状态对混凝土抗压强度的影响规律相同,干燥状态与饱和吸水状态再生骨料混凝土28 d抗压强度分别提高了3.5%、4.7%;一元线性回归方程及方差分析表明,再生细骨料掺量对再生骨料混凝土28 d抗压强度的影响是显著的。
The effect of the regenerated fine aggregate in dry state and the regenerated fine aggregate in saturated water on the properties of concrete were studied. The results show that the slump loss of 100% dry state and saturated water absorption state are 160 mm and 100 mm, respectively, and the reclaimed fine aggregate can improve the workability of concrete after being saturated with water. The state of regenerated fine aggregate The compressive strength of recycled aggregate concrete in dry state and saturated absorbent state increased by 3.5% and 4.7% respectively for 28 days. The linear regression equation and variance analysis showed that the amount of recycled fine aggregate The effect of compressive strength of recycled aggregate concrete at 28 d is significant.