Abstract

An overview of the effect of mineral additives on hydration reactions in ternary cement systems is of high importance for concrete design and durability. In this paper, the combination effect of limestone filler and slag on hydration reactions in ternary cements was investigated. Tests were carried out on cement pastes with various replacement levels of cement by limestone filler and slag (15, 25 and 45%) and two w/b ratios (0.35 and 0.48). The hydration reactions of ternary cement pastes were evaluated by measuring their degree of reaction at 7, 28 and 90 days. The degree of reaction was followed by thermogravimetric analysis (TGA) method. The results showed that the reaction degree was dependent on the replacement level and w/b ratio. The hydration heat and the compressive strength were further examined to verify the results obtained. Both hydration heat and compressive strength were found to be proportional to the reaction degree.

摘要

概述矿物添加剂对三元水泥体系中水化反应的影响对于混凝土设计和耐久性非常重要。本文研究了石灰石填料和矿渣复合对三元水泥水化反应的影响。用石灰石填料和矿渣（15%、25% 和 45%）以及两种 w/b 比（0.35 和 0.48）对不同水平的水泥进行了测试。三元水泥浆体的水化反应通过测量它们在 7、28 和 90 天时的反应程度来评估。反应程度通过热重分析(TGA)方法来跟踪。结果表明，反应程度取决于置换水平和w/b比。进一步检查水化热和抗压强度以验证获得的结果。