化学活化方法对磨细火山岩弃渣-水泥复合胶凝体系的影响

doi:10.11896/cldb.24030103

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Abstract The utilization of chemical activation method can enhance the applicability of natural volcanicash produced by waste slags as mineral admixtures in engineering applications. By employing the strength activity index method, a comparative analysis was conducted on the effects of various chemical activators on activation, and the impacts of activator type and dosage on setting time, rheological properties, and pore structure of pulverized pozzolan-cement composite binder were investigated. Results indicate that chemical activators have a more pronounced influence on strength enhancement during intermediate to late ages, with Li₂SO₄, Na₂SO₄, and TEA exhibiting superior performance in activating natural volcanic slags up to 18%. Chemical activators accelerate slurry setting while increasing plastic viscosity for newly mixed slurries. They also reduce porosity within composite binder while refining pores size distribution without affecting hydration product types.

Key words： natural volcanic slags chemical activation activator composite binder

Published: 25 November 2024 Online: 2024-11-22

CLC number:

TU528

Fund:National Innovation Platform Open Fund of China Academy of Railway Sciences Corporation Limited (2022YJ133) and National Key R & D Program of China (2022YFB2602604).

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	Articles by authors
	TAN Yanbin
	LI Linxiang
	YANG Zhenzhen
	XING Zida
	LIN Xinkai
	GE Xin
	YANG Lu
	YUAN Qiang

Cite this article:

TAN Yanbin,LI Linxiang,YANG Zhenzhen, et al. Effect of Chemical Activation Methods on Volcanic Slag-Cement Composite Binder[J]. Materials Reports, 2024, 38(22): 24030103-7.

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http://www.mater-rep.com/EN/10.11896/cldb.24030103 OR http://www.mater-rep.com/EN/Y2024/V38/I22/24030103

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