Shrinkage and cracking tendency of cement-based materials containing fly ash in the thin-walled structures
Abstract:In this paper, cracking sensitivity of cement-based materials with and without fly ash in thin-walled structures were investigated by means of restrained ellipse ring tests, the development of hydration heat and free shrinkage were also determined, moreover, the relation between the cracking sensitivity and shrinkage properties for different mixes were discussed, at the same time, the mechanism of shrinkage and cracking were studied. The results indicated that hydration heat and free shrinkage can be reduced incorporating an appropriate content of fly ash, moreover, the initial cracking time will delay 28-34％ of the specimens incorporating 0-30％ fly ash, which may be due to the reduce of hydration heat and free shrinkage.
cement-based materials flv ash thin-walled structure cracking sensitivity free shrinkage hvdration heat
X.G.Li X.B.Yin B. Wu G.M. Li S. W. Man X.F.Song
Key Laboratory for Silicate Materials Science and Engineering (Wuhan University of Technology), Mini Key Laboratory for Silicate Materials Science and Engineering (Wuhan University of Technology), Mini
国际会议
济南
英文
69-74
2010-05-09（万方平台首次上网日期，不代表论文的发表时间）