首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
轻集料与水泥石的界面结构
作者:胡曙光 王发洲 丁庆军 
单位:武汉理工大学 武汉理工大学 武汉理工大学 硅酸盐材料工程教育部重点实验室 武汉430070  硅酸盐材料工程教育部重点实验室 武汉430070  硅酸盐材料工程教育部重点实验室 武汉430070 
关键词:轻集料  界面  水泥石  矿物外加剂 
分类号:TU528.041
出版年,卷(期):页码:2005,33(6):713-717
DOI:
摘要:
采用扫描电镜、能量散射X射线能谱、背散射电子成像和显微硬度分析研究了高强页岩陶粒与水泥石的界面组成与结构。研究发现:高强页岩陶粒表层相对内部较为致密,轻集料与水泥石的界面呈嵌锁状,界面区宽度约为20~30μm,硅钙比、显微硬度均高于水泥石基体。粉煤灰等矿物外加剂能够起到优化轻集料与水泥石界面组成及结构的作用,在轻集料内水分的自养护和离子迁移作用下,矿物外加剂与氢氧化钙反应生成的水化硅酸钙凝胶颗粒填充和弥补轻集料的原始缺陷,进而提高轻集料的颗粒强度,并最终使轻集料混凝土的性能得到改善。
married cheaters cheat on my wife click
The combination and structure of interface between lightweight aggregate and cement paste were studied by using scanning electron microscopy, energy dispersive X-ray analysis, back scattered electrons image and micro hardness analysis.The results show that the surface structure of the high strength lightweight aggregate is denser than its core.The lightweight aggregate interlocks with the cement paste boundary,and the depth of the interfacial transition zone is about 20—30 μm.The ratio of silica to calcium and the micro hardness of lightweight aggregates are higher than that in cement matrix. With the addition of mineral the such as fly ash, the combination and structure of the interface are improved.Under the action of initial curing of water inside lightweight aggregate and ions diffusing between lightweight aggregate and cement matrix, the hydrated calcium silicate gels formed from the reaction of mineral additions and calcium hydroxide fill in the micro defects and cracks of lightweight aggregate.Therefore, the particle strength of lightweight aggregate and performance of concrete are eventually improved.
married cheaters why some women cheat click
women want men how to cheat how do i know if my wife cheated
read dating a married woman reasons wives cheat on their husbands
printable coupons for cialis drug discount coupons coupon for free cialis
cialis coupon cialis coupon cialis coupon
基金项目:
国家自然科学基金(50272045);; 武汉理工大学硅酸盐材料工程中心教育部重点实验室开放课题基金(SYSJJ200410)资助项目。
作者简介:
women want men how to cheat how do i know if my wife cheated
abortion las vegas abortion clinics in the bronx abortion pictures
abortion pill abortion pill abortion pill
参考文献:
[1]ZHANGMinhong,GJORVOE.Microstructureoftheinterfa cialzonebetweenLWAandcementpaste[J].CemConcrRes,1990,20(4):613—614. [2]ZHANGMinhong,GJORVOE.Penetrationofcementpaste intolightweightaggregate[J].CemConcrRes,1992,22(1):47—55. [3]LOY,GAOXF,JEARYAP.Microstructureofpre wetted aggregateonlightweightconcrete[J].BuildEnviron,1999,34:759—764. [4]陈惠苏,孙伟,STROEVENPiet.水泥基复合材料集料与浆体界面研究综述(一):实验技术[J].硅酸盐学报,2004,32(1):63—69.CHENHuisu,SUNWei,STROEVENPiet.JChinCeram Soc(inChinese),2004,32(1):63—69. [5]HUShuguang,LIYue.Researchonthehydration,hardening mechanism,andmicrostructureofhighperformanceexpansive concrete[J].CemConcrRes,1999,29(8):1013—1016. [6]廉慧珍,童良.建筑材料物相研究基础[M].北京:清华大学出版社,1996.110—111.LIANHuizhen,TONGLiang.FoundationofResearchof PhaseforBuildingMaterials(inChinese).Beijing:Tsinghua UniversityPress,1996.110—111.
women want men how to cheat how do i know if my wife cheated
how to catch a cheater online go
bystolic copay card click bystolic coupon voucher
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com