加矿渣粉再生粗骨料混凝土的力学性能指标探讨

Discussion on mechanical properties of recycled coarse aggregate concrete with slag powder

再生粗骨料混凝土主要是利用建筑垃圾制备粗骨拌合而成的混凝土,矿渣粉作为加固料按一定比例掺加,对再生粗骨料的力学性能有显明的改善和提高。本研究的再生粗骨料来源于安康市某一拆迁工地的混凝土建筑垃圾经过分拣破碎等处理后而得,通过新拌混凝土抗压强度试验数据分析了加矿渣粉再生粗骨料混凝土抗压和抗折等力学性能的变化规律及形成机理。并把加矿渣粉前后的数据进行对比分析,得出加矿渣粉再生粗骨料混凝土的力学性能明显示优越性,为再生粗骨料混凝土的工程应用提供了理论依据。

Recycled coarse aggregate concrete is mainly made of concrete mixed with coarse bone from construction waste.The mechanical properties of recycled coarse aggregate can be significantly improved by adding slag powder as reinforcement material in a certain proportion.In this study,the recycled coarse aggregate was obtained from the concrete construction waste of a demolition site in Ankang City after sorting and crushing.Through the compressive strength test data of freshly mixed concrete,the variation law and formation mechanism of the mechanical properties of the recycled coarse aggregate concrete with slag powder,such as compression and flexural resistance,were analyzed.By comparing and analyzing the data before and after adding slag powder,it is concluded that the mechanical properties of recycled coarse aggregate concrete with slag powder show superiority,which provides a theoretical basis for the engineering application of recycled coarse aggregate concrete.