Hydration Kinetics Model of Limestone-Calcined Clay-Cement (LC3)System

被引：0
|
作者：
Wu, Lang [1 ]
Bao, Rong [1 ]
Dai, Jian [1 ]
Lei, Bin [2 ]
机构：
[1] School of Civil Engineering, Jiangxi Science and Technology Normal University, Nanchang,330013, China
[2] School of Infrastructure Engineering, Nanchang University, Nanchang,330031, China
来源：
Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 15期
关键词：
Limestone-calcined clay-cement (LC3)concrete is a new type of composite building material that has a excellent application prospects in meeting the sustainable production of cement and energy conservation and emission reduction. This work proposed a hydration kinetics model for evaluating the chemical and mechanical properties of LC3 concrete by considering the dilution effect; nucleation effect; and volcanic ash reaction of calcined clay and limestone mineral admixtures. Based on the dynamic model; the cumulative hydration heat; calcium hydroxide content; and total bound water of the LC3 cementitious system with different dosages were analyzed and calculated. By comparing the model analysis results with the experimental results; it is proved that the established model can better simulate the hydration process of LC3 cement compound cementing system. The results show that within a certain range of dosage; the hydration degree of LC3 cement cementitious system is directly proportional to the dosage; while the calcium hydroxide content; total bound water; and cumulative hydration heat are inversely proportional to them. The recommended dosage of LC3 used as cementitious auxiliary cementitious material is 25%—35%. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved;
D O I：
10.11896/cldb.23020253
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