Characteristics of the hydration heat evolution of composite binder at different hydrating temperature

被引：82

作者：

Han, Fanghui ^{[1
,2
]}

Liu, Rengguang ^{[2
]}

Wang, Dongmin ^{[1
]}

Yan, Peiyu ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Civil Engn, China Educ Minist, Key Lab Civil Engn Safety & Durabil, Beijing 100084, Peoples R China

来源：

THERMOCHIMICA ACTA | 2014年 / 586卷

基金：

中国国家自然科学基金;

关键词：

Composite binder; Cement; Slag; Fly ash; Hydration heat; Temperature; BLAST-FURNACE SLAG; SILICEOUS FLY-ASH; PORTLAND-CEMENT; BLENDED CEMENTS; ISOTHERMAL CALORIMETRY; REPLACEMENT; REACTIVITY; PASTES;

D O I：

10.1016/j.tca.2014.04.010

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Hydration heat evolution rate and quantity of cement-slag binder and cement-fly ash binder were measured at 25 degrees C, 45 degrees C and 60 degrees C by isothermal calorimetry. Composite binder hydrates slower than pure cement at 25 degrees C. The hydration of composite binder is accelerated by the elevated temperature. The hydration heat of composite binder containing no more than 50% of slag and that of pure cement have little difference in the later period at 45 degrees C. It becomes the same or even higher at 60 degrees C. The hydration heat between composite binder containing fly ash and pure cement still has certain gap at 45 degrees C, but the gap is narrowed obviously at 60 degrees C. Raising temperature promotes the hydration of composite binder greater than that of pure cement. The hydration of composite binder containing slag is very sensitive to temperature. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：52 / 57

页数：6

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