石灰石-煅烧黏土-水泥(LC<sup>3</sup>)体系的水化动力学模型

doi:10.11896/cldb.23020253

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Abstract 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%.

Key words： limestone-calcined clay-cement (LC³) hydration kinetics cementitious system mineral admixtures

Published: 10 August 2024 Online: 2024-08-29

CLC number:

TQ172

Fund:National Natural Science Foundation of China (51968046, 52268043), the Training Plan for Academic and Technical Leaders in Major Disciplines in Jiangxi Province-Leading Talent Project (20204BCJ22003).

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	Articles by authors
	WU Lang
	BAO Rong
	DAI Jian
	LEI Bin

Cite this article:

WU Lang,BAO Rong,DAI Jian, et al. Hydration Kinetics Model of Limestone-Calcined Clay-Cement (LC³) System[J]. Materials Reports, 2024, 38(15): 23020253-6.

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http://www.mater-rep.com/EN/10.11896/cldb.23020253 OR http://www.mater-rep.com/EN/Y2024/V38/I15/23020253

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