Konjac Glucomannan Induced Retarding Effects on the Early Hydration of Cement

doi:10.3390/polym14051064

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	Konjac Glucomannan Induced Retarding Effects on the Early Hydration of Cement
	Chen, Yushan 1; Tang, Pengfei 1; Zhong, Chen 1; Liu, Laibao 1; Zhang, Yunsheng 2; Tang, Youhong 3; Zhang, Hongping 1,3
刊名	Polymers
	2021-03-01
卷号	14 期号:5
关键词	Portland cement Setting Cement based composites Cement hydration Construction environment Hydration kinetics Hydration of cements Interaction mechanisms Konjac glucomannan Retarding effect Setting time Setting time regulator
DOI	10.3390/polym14051064
英文摘要	Customarily, retarders serve as the setting time regulators of cement-based composites to meet the demands of various construction environments. However, the limited ability to adjust the setting time restricts the application of polysaccharides in special environments. In this study, we reported a naturally high-efficiency retarder, konjac glucomannan (KGM), and studied the mechanism of its effect on the hydration of ordinary Portland cement. Incorporating KGM could significantly prolong cement hydration without strength damage. Furthermore, the active hydroxyl group (−OH, rich in KGM) could chelate with Ca2+ (released from cement hydration) to form a cross-linking network, which is adsorbed on the surface of cement clinker, thereby being conducive to delaying the process of cement hydration and reducing the heat of hydration. The findings of this study are critical to the ongoing efforts to develop polysaccharide-cement-based composite materials for application in various special environments. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
WOS研究方向	Polymer Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000768285100001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157878]
专题	兰州理工大学
作者单位	1.State Key Laboratory of Environmentally Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang; 621010, China; 2.College of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Institute for NanoScale Science and Technology, College of Science and Engineering, Flinders University, Adelaide; SA; 5042, Australia
推荐引用方式 GB/T 7714	Chen, Yushan,Tang, Pengfei,Zhong, Chen,et al. Konjac Glucomannan Induced Retarding Effects on the Early Hydration of Cement[J]. Polymers,2021,14(5).
APA	Chen, Yushan.,Tang, Pengfei.,Zhong, Chen.,Liu, Laibao.,Zhang, Yunsheng.,...&Zhang, Hongping.(2021).Konjac Glucomannan Induced Retarding Effects on the Early Hydration of Cement.Polymers,14(5).
MLA	Chen, Yushan,et al."Konjac Glucomannan Induced Retarding Effects on the Early Hydration of Cement".Polymers 14.5(2021).