再生微粉-电石渣制备硅酸盐水泥熟料及其水化性能研究

doi:10.11896/cldb.23120044

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Abstract This research focuses on low-carbon cement preparation technology by using typical solid wastes such as recycled concrete powder(RCP) and calcium calcium carbide slag(CCS) as raw materials. The effects of sintering temperatures(1 300 ℃, 1 350 ℃, 1 400 ℃ and 1 450 ℃) and the contents of CCS and RCP on clinker calcination and mineral phase composition are analyzed, meanwhile the hydration characteristics and mechanical properties of solid waste-based cement at 1 400 ℃ are studied. Results demonstrated that an appropriate amount of RCP could lower the optimal clinker sintering temperature, enhancing both the mechanical properties and the cement hydration process. Specifically, when the RCP content reached 60wt%, the solid waste-based cement exhibited superior mechanical properties, achieving a 28-day compressive strength of 110.5 MPa. This investigation contributes to the advancement of resource utilization for RCP and offers guidance for substituting calcium-silica raw materials with solid waste in cement production.

Key words： recycled concrete powder calcium carbide slag Portland cement calcination temperature hydration property

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

CLC number:

TQ172

Fund:XPCC's Key Scientific and Technological Research Plan(2023AB013-03) and Shihezi Science and Technology Plan Project of the Eighth Division(2022GY01).

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	Articles by authors
	HOU Shengju
	LI Shuguo
	HE Chao
	CHEN Yang
	DAN Jianming
	ZHOU Yang
	LI Xiangguo
	LYU Yang

Cite this article:

HOU Shengju,LI Shuguo,HE Chao, et al. Study on the Preparation of Clinker from Recycled Concrete Powder and Calcium Carbide Slag and Its Hydration Properties[J]. Materials Reports, 2024, 38(22): 23120044-6.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.23120044 OR http://www.mater-rep.com/EN/Y2024/V38/I22/23120044

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