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再生微粉是废弃混凝土颗粒整形过程中产生的细小粉状颗粒,对环境以及人的身体健康造成威胁。但可将其作为矿物掺和料制备混凝土,为此研究其不同掺量时对混凝土的工作性和抗压强度的影响,结果表明:再生微粉掺量的增加使得混凝土的需水量增大,因此其对混凝土的工作性产生不利影响。对于混凝土的力学性能,在再生微粉的掺量为10%以内,混凝土的抗压强度减小幅度较小;当掺量较大时,混凝土的抗压强度大幅减小。
The regenerated powder is the fine powder particles produced in the process of shaping the waste concrete particles, posing a threat to the environment and human health. However, it can be used as a mineral admixture to prepare concrete. Therefore, the effect of different dosage on the workability and compressive strength of concrete is studied. The results show that the increase of recycled powder makes the water demand of concrete increase, It adversely affects the workability of concrete. For the mechanical properties of concrete, the compressive strength of concrete decreases less when the amount of recycled powder is less than 10%. When the content is large, the compressive strength of concrete decreases greatly.