低水胶比下粉煤灰对水泥早期水化的影响  

The Effect of Fly Ash on the Early Hydration of Cement at Low W/B Ratio

作　　者：胡曙光[1] 吕林女[2] 何永佳[1] 丁庆军[1] 耿健[1] 王晓[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉430070 [2]武汉理工大学理学院,武汉430070

出　　处：《武汉理工大学学报》2004年第7期14-16,45,共4页Journal of Wuhan University of Technology

基　　金：国家重点基础研究发展规划 ("973")项目 (2 0 0 1CB6 10 70 4 - 2 );湖北省自然科学基金 (2 0 0 2 AB0 75 )

摘　　要：提出可用等效结合水含量和水化影响因子来定性和定量分析粉煤灰对水泥早期水化作用的大小。若粉煤灰的水化影响因子 >1,则粉煤灰促进水泥水化 ,值越大 ,促进作用越显著 ;若粉煤灰的水化影响因子 <1,则粉煤灰延缓水泥水化 ,值越小 ,延缓作用越显著。The concepts of equivalent un-evaporable water content and the hydration effecting factor E h are proposed to evaluate the effect of fly ash on the early hydration of cement. If E h>1, fly ash accelerates the hydration process of cement and the greater the value of E h,the greater the accelerating effect of fly ash. If E h<1, fly ash retards the hydration process of cement and the smaller the value of E h, the greater the retarding effect of fly ash. The effects of fly ash of different type and dosages on the early hydration of cement at low W/B ratio are studied at the same time.

关 键 词：粉煤灰 水泥 早期水化 水化影响因子 

分 类 号：TQ172.1[化学工程—水泥工业]