矿物掺合料对免振捣轻骨料混凝土工作性能影响的试验研究

Study of work performance on mineral admixture to vibration-free lightweight aggregate concrete

进行了粉煤灰、硅灰、矿粉的单掺和复掺轻骨料混凝土工作性能对比试验,制定了评价免振捣泵送轻骨料混凝土的工作性能评价指标。利用坍落筒和改进设计的U型仪、分层度仪等仪器,试验研究了矿物掺合料对免振捣轻骨料混凝土坍落度、扩展度、分层度等工作性能指标的影响。研究结果对泵送轻骨料混凝土的广泛应用具有很好的借鉴作用。

Conducted comparison test for the work of Lightweight Aggregate Concrete Performance add with fly ash,silica fume,slag re-doped single-blending,and developed an evaluation indicators for the work of self-compaction lightweight aggregate concrete pumping performance. Through the use of tube and improvement of Slump U-instrument design,layered measuring equipment and other equipment,we research the min-eral admixtures on the self-compaction lightweight aggregate concrete slump,extended degree,and hierarchical degree of the impact of job perfor-mance.The results has a very good reference for the pump extensive use of lightweight aggregate concrete.