长沙理工大学学报（自然科学版）2023，Vol.20Issue(6)：39-48,10.DOI:10.19951/j.cnki.1672-9331.20221219002
掺废线路板非金属材料水泥稳定碎石抗温湿性能试验研究
Experimental study on temperature and humidity resistance of cement stabilized crushed stone mixed with non-metallic materials recycled from waste printed circuit boards
摘要
Abstract
[Purposes]The study aims to alleviate the demand of natural fine aggregate for cement stabilized macadamia base,the problem of waste circuit board non-metallic materials being difficult to deal with was solved.[Methods]Non-metallic materials recycled from waste printed circuit Boards(NWPCB)was substituted by equal volume for fine aggregates of 0～0.075 mm and 0.6～1.18 mm in cement stabilized macadam,and styrene butadiene emulsion was added to optimize the performance of NWPCB-cement stabilized macadam.Through dry shrinkage test,temperature shrinkage test,freeze-thaw cycle test and dry-wet cycle test,the influence of NWPCB incorporation on the damage resistance of cement stabilized macadamia was studied,and the effect of styrene butadiene emulsion modified NWPCB cement stabilized macadamia was proved.[Findings]The average shrinkage coefficient of NWPCB-cement stabilized crushed stone is 5.4%larger than that of conventional cement stabilized crushed stone,and the average shrinkage coefficient of NWPCB-cement stabilized crushed stone is 4.8%lower than that of ordinary cement stabilized crushed stone.After freeze-thaw cycle and dry-wet cycle,the residual value of 28 d unconfined compressive strength of NWPCB-cement stabilized crushed stone is above 90%.The above indexes of the NWPCB-cement stabilized crushed stone modified by butadiene emulsion are better than those of the unmodified NWPCBvcement stabilized crushed stone.[Conclusions]Cement stabilized crushed stone mixed with NWPCB still has good temperature and humidity resistance,and butadiene emulsion can play an optimization role.关键词
废线路板非金属材料/丁苯乳液/固废利用/干缩/温缩/冻融循环/干湿循环Key words
non-metallic materials recycled from waste printed circuit boards/butadiene emulsion/solid waste utilization/dry shrinkage/temperature shrinkage/freeze-thaw cycle/dry-wet cycle分类
交通工程引用本文复制引用
张恩源,郭光辉,李盛..掺废线路板非金属材料水泥稳定碎石抗温湿性能试验研究[J].长沙理工大学学报（自然科学版）,2023,20(6):39-48,10.基金项目
国家重点研发计划项目(2021YFB2601000) （2021YFB2601000）
湖南省研究生科研创新项目(CLSJCX22013) Project(2021YFB2601000)supported by the National Key Research and Development Program of China （CLSJCX22013）
Project(CLSJCX22013)supported by Research and Innovation Project of Hunan Province for Postgraduate Students （CLSJCX22013）
