矿渣-水泥胶凝体系早龄期的化学收缩模型及预测研究

doi:10.11896/cldb.25010012

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Abstract As a binary composite binder, slag-cement binder systems play a critical role in mitigating concrete volume deformation and enhancing crack resistance. In this work, an early-age chemical shrinkage model for slag-cementitious materials was developed based on the Parrot-Killoh hydration kinetics model, incorporating the volumetric changes of reactants and hydration products while accounting for the specific hydration cha-racteristics of slag. Comparative analysis with experimental data demonstrates that the proposed model can accurately predict the early-age chemical shrinkage behavior of slag-cement systems. The evolution of chemical shrinkage exhibits distinct staged characteristics over time and shows positive correlations with water-to-binder ratio, temperature, and specific surface area. This research provides a theoretical foundation for the engineering application of slag in cement-based materials.

Key words： slag-cement early-age property chemical shrinkage prediction model composite binder system

Published: Online: 2026-04-16

CLC number:

TU528

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	Articles by authors
	WU Lang
	PENG Lilin
	WANG Zele
	LI Hao
	LEI Bin

Cite this article:

WU Lang,PENG Lilin,WANG Zele, et al. Chemical Shrinkage Model and Prediction for Early-age Slag-Cement Binder Systems[J]. Materials Reports, 2026, 40(7): 25010012-7.

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https://www.mater-rep.com/EN/10.11896/cldb.25010012 OR https://www.mater-rep.com/EN/Y2026/V40/I7/25010012

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