Factors affecting the shrinkage of fly ash geopolymers
来源期刊：International Journal of Minerals Metallurgy and Materials2011年第1期
论文作者：Charoenchai Ridtirud Prinya Chindaprasirt Kedsarin Pimraksa
文章页码：100 - 104
摘 要：The shrinkage of fly ash geopolymers was studied in the present study.Fly ash was used as the source material for making the geopolymers.The effects of the concentration of NaOH,sodium silicate-to-NaOH ratio,liquid-to-ash ratio,curing temperature,and curing time on shrinkage were investigated.The geopolymers were cured at 25,40,and 60℃,respectively.The results indicate that the shrinkage of geopolymers is strongly dependent on curing temperature and liquid-to-ash ratio.The increase in shrinkage is associated with the low strength development of geopolymers.It is also found that NaOH concentration and sodium silicate-to-NaOH ratio also affect the shrinkage of geopolymers but to a lesser extent.
Charoenchai Ridtirud1，Prinya Chindaprasirt1，Kedsarin Pimraksa2
1. Sustainable Infrastructure Research and Development Center,Department of Civil Engineering,Faculty of Engineering,Khon Kaen University2. Department of Industrial Chemistry,Faculty of Sciences,Chiang Mai University
摘 要：The shrinkage of fly ash geopolymers was studied in the present study.Fly ash was used as the source material for making the geopolymers.The effects of the concentration of NaOH,sodium silicate-to-NaOH ratio,liquid-to-ash ratio,curing temperature,and curing time on shrinkage were investigated.The geopolymers were cured at 25,40,and 60℃,respectively.The results indicate that the shrinkage of geopolymers is strongly dependent on curing temperature and liquid-to-ash ratio.The increase in shrinkage is associated with the low strength development of geopolymers.It is also found that NaOH concentration and sodium silicate-to-NaOH ratio also affect the shrinkage of geopolymers but to a lesser extent.
关键词：
