论文部分内容阅读
目前废弃的混凝土逐渐增多,一次同等级再生混凝土的研究已经处于一个比较成熟的阶段,然而对于再生粗骨料的循环利用研究没有更大的进展。为了合理利用好再生混凝土,可以将高等级的混凝土粉碎以后制成低等级的混凝土,实现再生粗骨料的多次循环利用。研究C30、C40、C50、C60不同强度等级分别循环为一次再生C30混凝土和二次再生C30混凝土的物理性能和力学性能,探讨循环再生混凝土在实际工程中的应用价值。
At present, the abandoned concrete is gradually increasing. The research of a same level of recycled concrete is at a relatively mature stage. However, no great progress has been made in the recycling of recycled coarse aggregate. In order to make rational use of recycled concrete, high-grade concrete can be crushed to make low-grade concrete, which can be recycled multiple times. The physical and mechanical properties of C30, C40, C50 and C60 with different strength grades were recycled to C30 concrete and C30 concrete respectively, and the practical value of recycled concrete was discussed.