废弃混凝土磨细粉与矿粉复合性能试验研究

Research on Compound Performance of Waste Concrete Pulverized Admixture and Slag Powder

废弃混凝土磨细粉是将废弃混凝土经过清洗、破碎、筛分的剩余物,再次利用粉磨设备处理后得到的一种混合物。将这种磨细的混合物作为混凝土外加掺合料替代水泥。考虑到该品种掺合料性能单一的特点,将其与磨细矿粉复合后替代水泥,研究其对混凝土的性能影响。通过对比试验证明,这种复合不仅能够提高混凝土的性能,而且还可进一步提高掺合料的掺量,使废弃混凝土的再利用水平得以提高。

Waste concrete pulverized admixture is the mixture which is the residue of waste concrete cleaned, crushed, screened, and the compound got after the treatment by reusing grinding equipment and technology. This paper takes it as the concrete additive admixture to substitute cement. Considering the feature of single performance for this kind of admixture, we suggest its compounding with the grounded furnace slag to substitute cement, to test the impact on the concrete performance. Comparative tests confirm that the compound admixture can improve concrete performance and volume of the admixture to make waste concrete recycle better.