不同粒径的废弃电路板粉末对水泥砂浆基本性能的影响  

Effects of waste printed circuit board powder with different particle sizes on basic properties of cement mortar

作　　者：陈耀华 刘杰胜 冯博文 魏靖 张一迪 谭晓明 CHEN Yaohua;LIU Jiesheng;FENG Bowen;WEI Jing;ZHANG Yidi;TAN Xiaoming(School of Civil Engineering and Architecture,Wuhan Polytechnic University,Wuhan,Hubei 430023,China)

机构地区：[1]武汉轻工大学土木工程与建筑学院,武汉430023

出　　处：《湖南城市学院学报（自然科学版）》2023年第2期1-5,共5页Journal of Hunan City University:Natural Science

基　　金：湖北省交通厅科技项目(2018-422-1-11);湖北省教育厅指导性科研项目(B2020064)。

摘　　要：废弃电路板作为危险废弃物,对环境污染十分严重.为了提高废弃电路板的利用效率,将2种不同粒径的废弃电路板粉末掺入砂浆中,探究其对水泥砂浆抗压强度、抗折强度、流动度和稠度、孔隙率、保水性等性能的影响.研究结果表明:废弃电路板粉末能够提高砂浆强度,且在同一龄期、同一掺量下,细粉改性砂浆的抗压、抗折强度均高于粗粉改性砂浆;废弃电路板粉末的掺入,能够在一定范围内提升水泥砂浆的强度和保水性,有利于发展环境友好型社会.Waste printed circuit boards,as hazardous wastes,cause serious environmental pollution.In order to improve the efficiency of waste printed circuit boards,two kinds of waste powder with different particle sizes have been mixed into mortar to explore their effects on such properties of cement mortar as compressive strength,flexural strength,fluidity and consistency,porosity and water retention.The results show that waste printed circuit board powder can improve mortar strength.At the same age and the same dosage,the strength of fine powder modified mortar is higher than that of coarse powder modified mortar.The incorporation of waste printed circuit board powder can improve the strength and water retention of cement mortar in a certain range,which is conducive to the development of environmentally friendly society.

关 键 词：废弃电路板粉末 粒径 水泥砂浆 强度 保水性 

分 类 号：TU528.01[建筑科学—建筑技术科学] X705[环境科学与工程—环境工程]