摘要
以建筑垃圾、水泥和自来水厂尾泥(含水率为60%)为主要原材料制备了免烧砖,研究了水泥掺量、尾泥掺量和含水率对免烧砖抗压强度的影响,分析了尾泥固化的作用机制。结果表明,免烧砖的最佳配合比为:水泥20%+尾泥20%+建筑垃圾60%,此时,免烧砖的28 d抗压强度、抗冻性能、软化系数和吸水率均达到MU15非烧结垃圾尾矿砖的性能指标要求。实际生产时,需对免烧砖采取覆膜养护措施。
The non-fired brick was prepared with construction waste,cement and waterworks sludge(with water content of 60%)as the main raw materials.The effects of cement content and waterworks sludge content and moisture content on the compressive strength of non-fired brick were studied,and the mechanism of the solidification of waterworks sludge was analyzed.The results show that the best mix proportion of non-fired brick is 20%of cement and 20%of waterworks sludge and 60%of construction waste.At this time,the 28 day compressive strength,frost resistance,softening coefficient and water absorption of non-fired brick meet the performance index requirements of MU15 non-fired rubbish gangue brick.In actual production,it is necessary to take film covering curing measures for non-fired bricks.
作者
方爱国
杨中俊
华苏东
冯贵洋
张亚男
王春美
郭刘超
胡晓东
张艳芳
邓翔
FANG Ai-guo;YANG Zhong-jun;HUA Su-dong;FENG Gui-yang;ZHANG Ya-nan;WANG Chun-mei;GUO Liu-chao;HU Xiao-dong;ZHANG Yan-fang;DENG Xiang(China Construction Industrial&Energy Engineering Group Co.,Ltd.,Nanjing 210023,China;China Construction Installation Group Nanjing Construction Co.,Ltd.,Nanjing 210046,China;College of Materials Science and Engineering,Nanjing Tech University,Nanjing 211816,China;Jiangsu Hydraulic Research Institute,Nanjing 210017,China)
出处
《混凝土与水泥制品》
2022年第12期90-93,共4页
China Concrete and Cement Products
基金
住房和城乡建设部科学技术计划项目(2021-K-114)
江苏省建设行业科技计划项目(2021ZD53)
南京市建设行业科技计划项目(Ks2153)
江苏省水利科学研究院自主科研经费专项资金项目(2022Z016)。
关键词
免烧砖
自来水厂尾泥
建筑垃圾
抗压强度
Non-fired brick
Waterworks sludge
Construction waste
Compressive strength
