会员注册 会员登录 主办单位:国家建筑材料工业局技术图书馆 加为收藏 设为主页
1151web_logo
专注建材行业知识大数据
首页 外文期刊 中文期刊 图书馆 建材智网
您所在的位置:首页>>论文报告
The Competitive Adsorption Characteristics of Welan Gum and Superplasticizer in Cement Mortar
【文件类型】 【消费金额】2.4 【文章页数】8 【会员操作】  
【文章作者】赵青林;ZHANG Yulin;LIU Ciqi;ZENG Luping;CHEN Shihua;
【文章摘要】      Welan gum has been widely used in oil cement and grouting materials for its excellent rheological properties and anti-bleeding,and most of all,being friendly to the environment.However,when welan gum was added,the fluidity of mortar decreased sharply,so it should be used together with a superplasticizer to enable good workability.With its powerful charge density in the molecular structure,the competitive adsorption between welan gum and other admixtures happened remarkably during the addition process.Consequently,we experimentally studied on the bleeding rate and rheological properties of cement slurry,fluidity and mechanical properties of mortar with welan gum mixed with superplasticizer,aiming at understanding the competitive adsorption phenomenon by application of welan gum mixed with superplasticizer.By measuring the hydration heat and zeta potential,the mechanism of interaction of welan gum with superplasticizer was deduced and explained.The results showed that it could ensure a good dispersion effect when welan gum is mixed with the two kinds of superplasticizer.Welan gum had little impact on the naphthalene superplasticizer,but did have a substantial influence on polycarboxylate.In practice,adding welan gum after PCE acted with cement for 2 min could effectively avoid the competitive adsorption and then achieve better performance.On this viewpoint for mortar with PCE,new delay release welan gum needs further research and development.
【关 键 字】
【期刊】【卷】【ISSUE】【ISSUEID】    【文章期份】2016    【发布日期】2016/3/15 0:00:00    点击率:1    打印    关闭
关于我们 公告信息 业务资费 广告合同 友情链接 购买阅读卡 在线订《水泥》
网络市场部:010-65761182 网络技术部:010-51164639  传真:010-65761182 Email:service@chinabmi.com
在线咨询:  
国家建筑材料工业局技术图书馆 京ICP备06011358号   京公网安备11010502024146