The hydration mechanism and performance of Modified magnesium oxysulfate cement by tartaric acid

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 青海盐湖研究所知识仓储

	The hydration mechanism and performance of Modified magnesium oxysulfate cement by tartaric acid
	Wu, Chengyou 1; Chen, Wenhai 1; Zhang, Huifang 2; Yu, Hongfa 3; Zhang, Wuyu 1; Jiang, Ningshan 1; Liu, Lianxin 1
刊名	CONSTRUCTION AND BUILDING MATERIALS
	2017-07-30
卷号	144 页码:516-524
关键词	Magnesium Oxysulfate Cement Tartaric Acid Setting Time Compressive Strength 5mg(Oh)(2)Center Dot Mgso4 Center Dot 7h(2)o
文献子类	Article
英文摘要	Magnesium oxysulfate (MOS) cement has the advantages of light weight, low alkalinity, fire resistance, and good decorative value. Large-scale applications of MOS cement in civil engineering have been restricted by its low strength, which can be improved by adding some proper additives. Here, the effects of tartaric acid on the setting time, compressive strength, flexural strength, and deformation of MOS cement have been studied. Fourier transform infrared spectra, pH changes, hydration-heat release rate, and impedance have been observed to determine the effects of tartaric acid on the hydration process of MOS cement. To a certain extent, the addition of tartaric acid extends the setting time of MOS cement by improving the stability of the hydration film of active MgO in magnesium sulfate. X-ray diffraction, scanning electron microscopy, and mercury intrusion porosimetry were used to examine the hydration products and pore-size distribution of MOS cement. The analysis results indicate that the main reason for the high strength of MOS cement with tartaric acid is that the addition of tartaric acid can promote the formation of the needle-like high-strength phase of 5Mg(OH)(2)center dot MgSO4 center dot 7H(2)O and inhibit the formation and growth of the Mg(OH)(2) crystal phase. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词	OXYCHLORIDE CEMENT ; CITRIC-ACID ; PHOSPHORIC-ACID ; PHOSPHATES
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000401385800052
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/4248]
专题	青海盐湖研究所_青海盐湖研究所知识仓储青海盐湖研究所_盐湖资源与化学实验室中国科学院青海盐湖研究所
作者单位	1.Qinghai Univ, Sch Civil Engn, Xining 810016, Peoples R China 2.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Dept Civil Engn, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Wu, Chengyou,Chen, Wenhai,Zhang, Huifang,et al. The hydration mechanism and performance of Modified magnesium oxysulfate cement by tartaric acid[J]. CONSTRUCTION AND BUILDING MATERIALS,2017,144:516-524.
APA	Wu, Chengyou.,Chen, Wenhai.,Zhang, Huifang.,Yu, Hongfa.,Zhang, Wuyu.,...&Liu, Lianxin.(2017).The hydration mechanism and performance of Modified magnesium oxysulfate cement by tartaric acid.CONSTRUCTION AND BUILDING MATERIALS,144,516-524.
MLA	Wu, Chengyou,et al."The hydration mechanism and performance of Modified magnesium oxysulfate cement by tartaric acid".CONSTRUCTION AND BUILDING MATERIALS 144(2017):516-524.