TIME-SPACE EFFECT ON EROSION SUBSTANCE ABOUT THAUMASITE FORM OF SULFATE ATTACK IN CEMENT-BASED MATERIAL

摘要：

Erosion substances are identified and time-space effect on erosion substances of pastespecimens with 35％ limestone powder immersed in sulfate solutions (MgSO4) with 33800ppm mass concentration of SO42at 5 ℃+2 ℃ for 15 weeks are investigated. Erosionsubstances change from four-phases system including ettringite, gypsum, thaumasite andbrucite to threc-phases system including ettringite, gypsum and thaumasite, and then to two-phases system including ettringite and gypsum only from surthce to interior. Degradationabout thaumasite form of sullhte attack in cement-based material is layer to layer withthaumasite formation and C-S-H gel decalcification.

关键词： Time-space effect erosion substance thaumasite form of sulfate attack

作者: Fengchen Zhang Baoguo Ma Yanchao Zhu Geng Ying Yuanyuan Wu

作者单位: Wuhan University of Technology,Wuhan 430070,China

会议类型: 国际会议

会议名称: 1st International Conference on Microstructure Related Durability of Cementitious Composites(首届与水泥基复合材料耐久性相关的微观结构国际会议)

会议地点: 南京

会议语种:英文

页码: 601-608

在线出版日期: 2008-10-13（万方平台首次上网日期，不代表论文的发表时间）