会员注册 会员登录  国资委专项基金建设平台  咨询热线:010-65761182 主办:建筑材料工业技术情报研究所 国家建材技术图书馆   借阅卡 联系我们
微信关注
2528bmi001_1T
1314web_logo
首页 新闻资讯 会议会展 视频培训 图书 期刊 外文期刊 报纸 标准 专利 成果 产品 企业 知识进厂
您所在的位置:首页>>论文报告
Rheological and mechanical properties of cemented foam backfill: Effect of mineral admixture type and dosage
【文件类型】 【文章页数】14 【会员操作】  
【文章作者】Zhang, Shiyu;Yang, Lei;Ren, Fengyu;Qiu, Jingping;Ding, Hangxing
【文章摘要】      In this work, the effect of mineral admixture type and dosage on the rheological and mechanical behaviors of a newly developed backfilling material, cemented foam backfill (CFB), is comprehensively investigated. Fly ash (FA), ground granulated blast-furnace slag (GGBS) and quicklime are selected as mineral admixtures, while H2O2 and CaCO3 whisker are used as foaming agent and foaming stabilizer respectively. CFB samples are prepared with solid content between 70% and 76%, replacement rates of cement with FA or GGBS between 0% and 30% and cured at 7, 14 and 28 days. In addition, 5 wt % of FA or GGBS is replaced by an equal amount of quicklime to accelerate pozzolanic reaction in a portion of CFB samples. Then, fresh CFB is subjected to the rheological property (i.e., apparent viscosity and equivalent Bingham yield stress) test, while hardened CFB is subjected to porosity and mechanical tests. Additionally, thermogravimetric and X-ray diffractogram analyses are conducted on 7- and 28-day hydrated binder pastes (pure cement, cement + FA/GGBS, cement + FA/GGBS + quicklime) to reveal the influence of mineral admixture type and dosage on the hydration product of CFB.
【关 键 字】
【卷】112【ISSUE】【ISSUEID】815C0071    【文章期份】2020    【发布日期】2021/3/3 11:16:58    点击率:4    打印    关闭
首页 新闻资讯 会议会展 视频培训 图书 期刊 外文期刊 报纸 标准 专利 成果 产品 企业 知识进厂
网络市场部:010-65761182 网络技术部:010-51164639  传真:010-65761182 Email:service@chinabmi.com
在线服务 QQ:  
建筑材料工业技术情报研究所 国家建材技术图书馆
京ICP备06011358号-7
Copyright © 2004 chinabmi.com All rights reserved. 中国建材智网版权所有