Effects of citric acid on hydration process and mechanical properties of thermal decomposed magnesium oxychloride cement

ISL OpenIR > 青海盐湖研究所知识仓储

	Effects of citric acid on hydration process and mechanical properties of thermal decomposed magnesium oxychloride cement
	Wen Jing1 ; Yu Hongfa 1,2,3; Li Ying1 ; Wu Chengyou 1; Dong Jinmei1
	2014-02-01
发表期刊	JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
卷号	29 期号:1 页码:114-118
关键词	Thermal Decomposed Magnesium Oxychloride Cement Citric Acid Hydration Heat Strength
摘要	In order to make full use of salt lake magnesium resources and improve the strength of the thermal decomposed magnesium oxychloride cement (TDMOC), the effects of citric acid on the hydration process and mechanical properties of TDMOC was studied. The hydration heat release at initial 24 h and strengths at 3, 7, and 28 days of TDMOC specimens were conducted. The hydration products and paste microstructure were analyzed by XRD, FT-IR and SEM, respectively. The results showed that citric acid can not only reduce the 24 h hydration heat release and delay the occurring time of second peak of TDMOC, but also produce more 5Mg(OH)(2)center dot MgCl2 center dot 8H(2)O and less Mg(OH)(2) in hydration process of TDMOC. More perfect and slender crystals were observed in the microstructure of the TDMOC pastes with citric acid. The results demonstrated that citric acid as an additive of TDMOC can decrease the hydration heat release and increase the compressive strength and flexural strength of TDMOC. The possible mechanism for the strength enhancement was discussed.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5703
专题	青海盐湖研究所知识仓储盐湖资源综合利用工程技术中心盐湖资源与化学实验室
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Qinghai Univ, Civil Engn Inst, Xining 810016, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Dept Civil Engn, Nanjing 210016, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wen Jing,Yu Hongfa,Li Ying,et al. Effects of citric acid on hydration process and mechanical properties of thermal decomposed magnesium oxychloride cement[J]. JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,2014,29(1):114-118.
APA	Wen Jing,Yu Hongfa,Li Ying,Wu Chengyou,&Dong Jinmei.(2014).Effects of citric acid on hydration process and mechanical properties of thermal decomposed magnesium oxychloride cement.JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,29(1),114-118.
MLA	Wen Jing,et al."Effects of citric acid on hydration process and mechanical properties of thermal decomposed magnesium oxychloride cement".JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 29.1(2014):114-118.