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Early hydration and viscoelastic properties of tricalcium aluminate pastes influenced by soluble sodium salts
Cement and Concrete Research ( IF 10.9 ) Pub Date : 2025-01-30 , DOI: 10.1016/j.cemconres.2025.107788
Daniel Axthammer, Tobias Lange, Joachim Dengler, Torben Gädt

During the early hydration of ordinary Portland cement (OPC), tricalcium aluminate (C3A) exhibits the highest reactivity among the clinker phases. Consequently, C3A significantly influences the early rheological properties of OPC-based materials, thereby linking rheology with C3A reactivity. The reactivity of C3A is affected by temperature, calcium sulfates, admixtures, and ionic strength. Calcium sulfate phases such as gypsum, bassanite, or anhydrite are used in technical Portland cement to control the early reactivity of C3A.

中文翻译:


受可溶性钠盐影响的铝酸三钙糊剂的早期水化和粘弹性



在普通硅酸盐水泥 (OPC) 的早期水化过程中,铝酸三钙 (C3A) 在熟料相中表现出最高的反应性。因此,C3A 显著影响基于 OPC 的材料的早期流变特性,从而将流变与 C3A 反应性联系起来。C3A 的反应性受温度、硫酸钙、外加剂和离子强度的影响。石膏、巴桑石或硬石膏等硫酸钙相用于工业波特兰水泥中,以控制 C3A 的早期反应性。
更新日期:2025-01-30
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