水泥基材料抗TSA侵蚀性能影响因素研究

高小建; 马保国

doi:10.13204/j.gyjz200612001

水泥基材料抗TSA侵蚀性能影响因素研究

doi: 10.13204/j.gyjz200612001

高小建¹,
马保国²

1.
1 哈尔滨工业大学土木工程学院哈尔滨 150090;
2.
2 武汉理工大学硅酸盐材料工程教育部重点实验室武汉 430070

基金项目:

国家自然科学基金资助项目(批准号:50408016);黑龙江省博士后科研启动资金资助项目

详细信息

作者简介:
高小建,男,1976年6月出生,博士,副教授,E-mail:xjgao2002@yahoo.com.cn

中图分类号: TU528.45
计量
- 文章访问数: 91
- HTML全文浏览量: 11
- PDF下载量: 30
- 被引次数: 0
出版历程
- 收稿日期: 2006-06-07
- 刊出日期: 2006-12-20

FACTORS AFFECTING THAUMASITE FORM OF SULFATE ATTACK ON CEMENT-BASED MATERIAL

Gao Xiaojian¹,

1.
1 School of Civil Engineering,Harbin Institute of Technology Harbin 150090;
2.
2 Key Lab.of Silicate Materials Sci.and Engineering of Ministry of Education,Wuhan Univ.of Tech. Wuhan 430070

摘要

摘要: 研究了不同配合比掺石灰石粉水泥砂浆在不同硫酸盐溶液中浸泡1年期间的外观、强度和矿物成分变化。结果表明,水灰比越低,砂浆抗TSA侵蚀性能越好;不同品种水泥的抗TSA侵蚀能力由高到低依次为:硫铝酸盐水泥抗硫酸盐水泥普硅水泥;掺硅灰和矿渣细粉均能明显改善混凝土抗TSA侵蚀性能,且矿渣粉掺量越大效果越明显。镁盐对碳硫硅酸钙晶体(thaumasite)的生成和TSA侵蚀破坏具有一定促进作用;水泥基材料TSA侵蚀破坏也可能发生于15℃以上环境中,环境温度对水泥基材料整体抗硫酸盐侵蚀性能的影响规律与材料组分有关。
- 硫酸盐侵蚀 /
- 碳硫硅酸钙 /
- 材料组分 /
- 侵蚀环境
Abstract: The limestone filler cement mortars with different mixing proportions were immersed into different sulfate solutions for one year,and their visual appearances, strength and mineral composition were measured at intervals.The results show that the resistance of mortar to thaumasite form of sulfate attack(TSA) increases with the reduction of water-cement ratio.The relative resistance to TSA of the cements is outlined below,from best to worst: sulphoaluminate cement,sulfate resisting Portland cement,ordinary Portland cement.The resistance to TSA of mortar is remarkably improved by the addition of silica fume or ground granulated blastfurnace slag(ggbs),and the better the resistance to TSA,the more the addition of ggbs is.Magnesium salts reinforce the thaumasite formation and the thaumasite form of sulfate attack in the cement mortars.It reveals that TSA may also occur to structures at temperatures of higher than 15℃.The influence of temperature on the whole resistance to sulfate attack of mortar is related to the material composition.
- sulfate attack /
- thaumasite /
- material composition /
- erosive environment

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参考文献(9)

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