离子掺杂对钙质膨胀剂熟料性能的影响

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Abstract The effects of three metal ion oxides of MgO, Al₂O₃ and CuO on the properties of calcium oxide expander clinker were studied. Compared with the non-doped metal ion oxides, CuO inhibited the performance of 3% metal ion oxides. Expansion agent clinker reaction rate, MgO basically has no effect on the expansion agent clinker reaction rate, and Al₂O₃ accelerates the expansion agent clinker reaction rate. Chemical analysis, XRD, and microcalorimetry were used to analyze the f-CaO content, mineral composition and hydration process of the expansion agent clinker. The results showed that the addition of CuO would inhibit the decomposition of CaCO₃ in the raw meal into f-CaO, resulting in Expansion agent clinker has a low reaction rate; the addition of MgO and Al₂O₃ mainly occurs in the expansion agent clinker system, and the difference in Al³⁺ and Ca²⁺ valence causes defects in the system, which increases the expansion reaction rate.

Key words： expansion agent metal ion oxide expansion reaction rate

Published: 09 December 2021

CLC number:

TU528

About author:: Zebo Yang graduated from Wuhan University of Technology with a master's degree in engineering in June 2018. From the same year to the present, he has served as a research and development engineer in Wuhan Ujoin Building Material Technolgy Co, Ltd, mainly engaged in the research and development of expansion agents and mineral admixtures for concrete.

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	YANG Zebo
	GU Zhenrui
	WANG Hailong

Cite this article:

YANG Zebo,GU Zhenrui,WANG Hailong. Effect of Ion Doping on the Properties of Calcium Expanding Agent Clinker[J]. Materials Reports, 2021, 35(z2): 259-261.

URL:

http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/Iz2/259