REVISED VIEW ON CHEMICAL SHRINKAGE

摘要：

Extensively studied, chemical shrinkage is considered to be an intrinsic property ofPortland cement. It is generally assumed to be proportional to degree of hydration, since it hasits origin in the hydration reaction stoichiometry. Furthermore, generally accepted point ofview is that chemical shrinkage is independent of water/cement (w/c) ratio. The newrepresentation and interpretation of the chemical shrinkage of hydrating cement paste is givenin the paper. The chemical shrinkage of cement pastes with w/c ratios of 0.45, 0.33, 0.25 and0.21 was tested by weighing-in-water method. The degree of hydration of the pastes wasexamined by thermogravimetric analyzer (TGA). Finally, the effect of water/cement ratio onchemical shrinkage of hydrating cement paste was demonstrated and compared with theliterature data.

作者: S.Zhutovsky K.Kovler

作者单位: National Building Research Institute - Faculty of Civil and Environmental Engineering Technion - Israel Institute of Technology,Haifa 32000,Israel

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: 775-784

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）