复合胶凝材料浆体结构形成过程与初始水化的关系
The relationship between the paste structure build-up process of composite binders and their initial hydration
关键词：
胶凝材料；结构形成；小幅震荡剪切测试；矿物掺合料；储能模量；相位角；水化
Key words：
Binder; Structural build-up; Small amplitude oscillatory shear test; Mineral admixture; Storage modulus; Phase angle; Hydration
刊期：
2026年第3期
DOI：
10.19761/j.1000-4637.25020049
文章编号：
基金项目：
国家自然科学基金项目（51878381）。
作者：
阎培渝1，刘 宇2
单位：
1.清华大学 土木工程系 北京 100084；2.中建一局集团建设发展有限公司 北京 100102
摘要
摘 要：采用小幅震荡剪切测试研究了掺多种矿物掺合料的复合胶凝材料浆体结构形成过程，采用等温量热法测试了复合胶凝材料浆体的水化放热速率，分析了浆体结构的储能模量和相位角的经时变化。结果表明：根据储能模量和相位角的经时变化，复合胶凝材料浆体结构形成过程可分为初始阶段、线性增长阶段、指数增长阶段这3个阶段，其分别对应胶凝材料水化的初始期、诱导期和加速期初始阶段；相位角趋于稳定的时间点是初始阶段与线性增长阶段的转变点；储能模量开始指数增长的时间与胶凝材料水化诱导期的结束时间基本一致；矿物掺合料的细度（比表面积）、活性和颗粒表面状态可明显影响复合胶凝材料浆体结构的形成速率。
Abstract: The paste structure build-up process of composite binders containing various kinds of mineral admixture was studied by using small amplitude oscillatory shear test. The hydration heat release rate of composite binder paste was tested by using isothermal calorimetry. The time-dependent variation of storage modulus and the phase angle of paste structure was obtained. The results show that the paste structure build-up process of binders can be divided to 3 stages: the initial stage, the stage of linear growth and the stage of exponential growth, and they correspond respectively to the initial stage, the induction stage and the initial accelerating stage of the hydration of composite binders. The time when the phase angle becomes stable is the transition point between the initial and linear growth stage. The time of the exponential growth of storage modulus is almost the same as the ending time of the induction stage of the hydration of composite binders. The fineness (specific surface area), activity and particle surface characteristics of mineral admixtures can significantly affect the paste structure build-up rate of composite binders.
结论
（1）根据复合胶凝材料浆体储能模量和相位角的经时变化，浆体结构形成过程可分为3个阶段：初始阶段、线性增长阶段、指数增长阶段，各阶段分别对应于胶凝材料水化的初始期、诱导期和加速期初始阶段，相位角趋于稳定的时间点是初始阶段与线性增长阶段的转变点，储能模量开始指数增长的时间与胶凝材料水化诱导期的结束时间基本一致。
（2）掺矿物掺合料的复合胶凝材料浆体的絮凝能力均高于REF组，这使其浆体结构形成的初始阶段缩短。矿物掺合料的细度（比表面积）、活性和颗粒表面状态均可影响胶凝材料水化诱导期的长短和浆体结构形成的速率。掺矿物掺合料的复合胶凝材料的水化诱导期长于REF组。
（3）掺US和SF可以提高复合胶凝材料浆体结构的线性硬化速率；掺GS、FA和FC对浆体结构线性硬化速率的影响效果依次增强；掺US可以提高浆体结构的非线性硬化速率，而掺GS、FA、SF、FC时，浆体的非线性硬化速率降低，且降低程度依次增加。
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引用本文
阎培渝,刘宇.复合胶凝材料浆体结构形成过程与初始水化的关系[J].混凝土与水泥制品,2026,53(3):1-6,12. YAN P Y,LIU Y.The relationship between the paste structure build-up process of composite binders and their initial hydration[J].China Concrete and Cement Products,2026,53(3):1-6,12 (in Chinese).
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