期刊
THERMOCHIMICA ACTA
卷 605, 期 -, 页码 43-51出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2015.02.018
关键词
Steel slag; Blended cement; Hydration heat; Kinetics
资金
- National Natural Science Foundation of China [U1134008, 51278277]
Hydration heat characteristics of blended cement containing up to 50% steel slag were studied at 25 degrees C, 45 degrees C and 60 degrees C by isothermal calorimeter. Kinetics equations were used to explore kinetics of blended cement. Kinetics parameters, n,K, and E-a, were calculated and analyzed. Results indicated that the activity of steel slag was very low. Steel slag accelerated the hydration of aluminates but decelerated the hydration of silicates in cement clinker. Small amount of steel slag affected little the hydration process of cement. Elevated temperature obviously promoted the hydration of blended cement. The hydration of blended cement containing no more than 35% steel slag was controlled by nucleation of hydrates in acceleration period and by diffusion of ions in decay period. The hydration of blended cement containing 50% steel slag was mostly dominated by phase boundary reaction, then directly by diffusion. Er, increased with increasing steel slag content. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据