铜渣高温烧结制备透水砖的性能研究——以稻壳粉为造孔剂  

Study on the Performance of Permeable Bricks Prepared by High Temperature Sintering of Copper Slag-Using Rice Husk Powder as a Pore Forming Agent

作　　者：张保敬 展雪 官泓睿 肖涛 ZHANG Baojing;ZHAN Xue;GUAN Hongrui;XIAO Tao(School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221000,China)

机构地区：[1]中国矿业大学材料与物理学院,江苏徐州221000

出　　处：《中国资源综合利用》2024年第11期1-5,共5页China Resources Comprehensive Utilization

摘　　要：铜渣排放量大,但难以大规模利用,铜渣的大量堆积不仅是对资源的浪费,还会破坏生态环境。透水砖可以减缓城市热岛效应和城市洪涝。试验以两种铜渣为原料,以稻壳粉为造孔剂,制备高强度多孔透水砖,研究稻壳粉掺量(0.00%、1.25%、2.50%、3.75%和5.00%)对透水砖孔隙度、吸水率、透水性能、力学性能、微观形貌和物相组成的影响。结果表明,随着稻壳粉掺量的增多,样品的孔隙度、吸水率和透水系数逐渐增加,抗压强度逐渐减小。当稻壳粉掺量为0%时,原铜渣透水砖的抗压强度比还原铜渣透水砖高38.9 MPa。当稻壳粉掺量超过1.25%时,抗压强度降低的幅度变小。The discharge of copper slag is large,but it is difficult to utilize on a large scale,the massive accumulation of copper slag is not only a waste of resources,but also damages the ecological environment.Permeable bricks can alleviate urban heat island effect and urban flooding.In this experiment,two types of copper slag are used as raw materials,and rice husk powder is used as a pore forming agent to prepare high-strength porous permeable bricks,and the effects of rice husk powder dosage(0.00%,1.25%,2.50%,3.75%and 5.00%)on the porosity,water absorption,permeability,mechanical properties,microstructure and phase composition of permeable bricks are studied.The results show that with the increase of rice husk powder content,the porosity,water absorption and permeability coefficient of the sample gradually increase,while the compressive strength gradually decreases.When the content of rice husk powder is 0%,the compressive strength of the original copper slag permeable brick is 38.9 MPa higher than that of the reduced copper slag permeable brick.When the dosage of rice husk powder exceeds 1.25%,the decrease in compressive strength becomes smaller.

关 键 词：透水砖 造孔剂 铜渣 高温烧结 稻壳粉 

分 类 号：TU522.1[建筑科学—建筑技术科学] X758[环境科学与工程—环境工程]