掺入不同粒径和掺量的废弃砖粉对砂浆耐久性能的影响  

The Effect of Adding Waste Brick Powder with Different Particle Sizes and Dosages on the Durability Performance of Mortar

作　　者：张月玥[1] 朱从香 ZHANG Yue-yue;ZHU Cong-xiang(Zhengzhou Railway Vocation and Technical College,Zhengzhou 451460,China;School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]郑州铁路职业技术学院,河南郑州451460 [2]江苏科技大学土木工程与建筑学院,江苏镇江212100

出　　处：《水电能源科学》2025年第4期129-132,共4页Water Resources and Power

基　　金：国家自然科学基金项目(51108170)。

摘　　要：为研究掺入废弃砖粉对水泥基复合材料力学行为、毛细吸水性及孔隙率的影响,开展了砂浆试件抗压抗折试验、毛细吸水试验及孔隙率测定试验,探讨了不同废弃砖粉掺量及中位粒径对砂浆工作性能的影响。试验结果表明,砂浆试件抗压和抗折强度随废弃砖粉取代率的增加或中位粒径增大而呈下降趋势;废弃砖粉的掺入或细化废弃砖粉粒径均可降低试件毛细吸水量;废弃砖粉掺量为20%时,试件毛细吸水量和孔隙率最小,说明适当掺量的废弃砖粉可优化砂浆孔结构,提高试件密实度和耐久性。To investigate the effects of adding waste brick powder on the mechanical properties,capillary water absorption,and porosity of cement-based composite materials,this paper conducted compressive and flexural tests,capillary water absorption tests,and porosity determination tests,and explored the effects of different waste brick powder dosages and median particle sizes on the workability of mortar.The experimental results show that the compressive and flexural strength of mortar specimens decrease with the increase of waste brick powder substitution rate or median particle size;The addition or refinement of waste brick powder can reduce the capillary water absorption of the specimen;When the amount of waste brick powder is 20%,the capillary water absorption and porosity of the specimen are the smallest,indicating that an appropriate amount of waste brick powder can optimize the pore structure of the mortar,improve the compactness and durability of the specimen.

关 键 词：废弃砖粉 砂浆 吸水性 力学性能 热失重 

分 类 号：TV431[水利工程—水工结构工程]