隧道弃渣制备免烧透水砖及性能研究  

Research on Preparation and Performances of Water Permeable Bricks with Tunnel Slag

作　　者：李峰 刘明宝[1] 崔孝炜[1] 郭晋邑 乔成芳[1] 狄燕清[1] 李虎山 阮小城 杨晋 Li Feng;Liu Mingbao;Cui Xiaowei;Guo Jinyi;Qiao Chengfang;Di Yanqing;Li Hushan;Ruan Xiaocheng;Yang Jin(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo University,Shangluo,Shaanxi 726000;Xi’an Oujin Construction Engineering Co.,Ltd.,Xi’an,Shaanxi 710018;Zhashui County Renewable Resources Utilization Co.,Ltd.,Shangluo,Shaanxi 726000)

机构地区：[1]商洛学院陕西省尾矿资源综合利用重点实验室,陕西商洛726000 [2]西安欧进建筑工程有限公司,陕西西安710018 [3]柞水县再生资源利用有限公司,陕西商洛726000

出　　处：《非金属矿》2025年第1期112-114,共3页Non-Metallic Mines

基　　金：国家自然科学基金项目(22173056);陕西省重点研发计划(2023-YBSF-344);陕西省秦创原“科学家+工程师”队伍建设(2024QCY-KXJ-147);陕西省技术创新引导专项项目(2022QFY10-08);陕西高校青年创新团队-MOF基功能材料热化学创新团队(23JP042);商洛市科技局项目(2023-工业-0025);企业项目(22HKY295)。

摘　　要：以隧道弃渣作为骨料,水泥为胶结剂,粉煤灰为辅助原料,通过压制成型法制备免烧透水砖,考察了不同因素对样品性能的影响。结果表明,当配合比设计参数为:孔隙率20%,隧道弃渣、水泥和粉煤灰质量比8∶1∶1,水灰比0.3,减水剂用量1%,得到透水砖的最佳工艺条件,即成型压力为2.5 MPa,保压时间为50 s,采用标准养护28 d。此条件下制得的免烧透水砖抗压强度为12.3 MPa,透水系数为3.25×10^(-2) cm/s,本研究为隧道弃渣综合利用提供了新途径。Using tunnel waste slag as aggregate,cement as cementing agent and fly ash as auxiliary raw materials,the non-fired permeable bricks were prepared by press forming method,and the influence of various factors on the sample properties was investigated.The results show that the design parameters of the mix ratio are as follows,porosity of 20%,tunnel slag,cement and fly ash mass ratio of 8∶1∶1,water to cement ratio of 0.3,water reducing agent dosage of 1%.The optimum process conditions for obtaining the permeable bricks are as follows,forming pressure of 2.5 MPa,holding pressure time of 50 s,and standard curing age of 28 d.Under these conditions,the compressive strength of the bricks is 12.3 MPa and the permeability coefficient is 3.25×10^(-2) cm/s,this research provides a new way for comprehensive utilization of tunnel slag.

关 键 词：隧道弃渣 透水砖 抗压强度 透水系数 

分 类 号：TU522.1[建筑科学—建筑技术科学] X75[环境科学与工程—环境工程]