粉煤灰再生混凝土力学性能试验研究  

Experimental study on influence of fly ash recycled concrete on mechanical properties

作　　者：黄春梅 HUANG Chun-mei

机构地区：[1]朔州市住房和城乡建设局,山西朔州036002

出　　处：《砖瓦》2023年第3期30-33,共4页Brick-tile

摘　　要：为了进一步探究粉煤灰掺量、再生骨料替代率对再生混凝土力学性能的影响,通过试验分析,得出其对再生混凝土坍落度、抗压、抗折及劈裂抗拉性能的变化规律。试验发现:粉煤灰掺量、再生骨料替代率的不断增加,导致再生混凝土的抗压强度、抗折强度和劈裂抗拉强度均呈现先增加后减小的现象,且粉煤灰掺量为15%、再生骨料替代率为30%时,再生混凝土的力学性能最优。In order to further explore the influence of fly ash content and recycled aggregate substitution rate on the mechanical properties of recycled concrete, the change rules of its slump, compression, bending and splitting tensile properties of recycled concrete are obtained through experimental analysis. The test results show that the increasing of fly ash content and recycled aggregate substitution rate lead to the phenomenon that the compressive strength, flexural strength and splitting tensile strength of recycled concrete increase first and then decrease, and the mechanical properties of recycled concrete are the best when the fly ash content is 15%and the recycled aggregate substitution rate is 30%.

关 键 词：再生混凝土 劈裂抗拉强度 粉煤灰 再生骨料 

分 类 号：TU528[建筑科学—建筑技术科学]