地聚物乳化沥青冷再生混合料的强度发展特征与性能研究

doi:10.11896/cldb.24050037

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Abstract Geopolymer have potential to replace cement in cold recycled asphalt mixtures due to its high performance and low carbon emissions. This study aims to enhance the performance of cold recycled asphalt mixtures by incorporating geopolymer. Firstly, the development of indirect tensile strength of emulsified asphalt cold recycling mixtures with different material compositions of geopolymer was investigated. Secondly, the pavement performance, dynamic properties, and microstructure characteristics of the cold recycled asphalt mixtures were studied. The results indicate that geopolymer can significantly improve the indirect tensile strength of the cold recycled asphalt mixtures after 28-day curing. Moreover, the high-temperature performance, low-temperature performance, and resistance to water damage of the cold recycled asphalt mixtures with geopolymer meet the requirements. Additionally, the dynamic modulus of the cold recycling mixture still exhibits frequency-temperature depen-dence. Furthermore, the intertwined structure formed by the asphalt film produced by asphalt emulsion demulsification and the reaction products of geopolymer explains its macroscopic mechanical performance characteristics.

Key words： cold recycled mixture geopolymer asphalt emulsion strength development pavement performance dynamic modulus

Published: 25 September 2025 Online: 2025-09-11

CLC number:

U414

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	Articles by authors
	LIN Juntao
	ZHONG Chao
	WANG Zongrui
	XU Fang
	ZHU Xiaobin

Cite this article:

LIN Juntao,ZHONG Chao,WANG Zongrui, et al. Research on the Strength Development Characteristics and Performance of Cold Recycled Mixtures with Geopolymer and Asphalt Emulsion[J]. Materials Reports, 2025, 39(18): 24050037-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24050037 OR https://www.mater-rep.com/EN/Y2025/V39/I18/24050037

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