论文部分内容阅读
针对大粒径废弃混凝土再利用问题,采用自密实混凝土(SCC)灌注废弃混凝土堆积体的方法进行研究,试验中将拆除后粒径在100mm~200mm之间的废弃混凝土块作为大粒径再生骨料,随机堆积在边长为500mm的立方体模板中,用SCC进行灌注,形成再生大骨料自密实混凝土,并对其强度及内部密实情况进行取芯检测,结果显示,再生大骨料自密实混凝土内部密实性良好,芯样平均强度处于自密实混凝土与废弃混凝土两者强度之间,且芯样强度的最小值也达到了两者强度较小值的85%以上,并重点对试件的破坏形式及裂缝产生位置进行了分析。
Aiming at the reuse of large-size waste concrete, the self-compacting concrete (SCC) was used to perfuse abandoned concrete pile. The disused concrete blocks with the size of 100mm ~ 200mm after dismantling were used as the large size regenerated bone The materials were randomly stacked in a cuboid template with a side length of 500 mm and filled with SCC to form a self-compacting concrete for recycling large aggregates. Core strength tests and core densification tests were carried out. The results showed that the recycled large aggregate was self-compacting The internal density of concrete is good, the average strength of core sample is between the strength of self-compacting concrete and waste concrete, and the minimum value of core-like strength is above 85% of the smaller one, The damage form and the location of cracks were analyzed.