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DOI	10.1680/jmacr.19.00558
	Microstructure and transport properties of cement-based material enhanced by graphene oxide
	Zeng, Hongyan; Qu, Shen; Qin, Yinghong
通讯作者	Qu, S (通讯作者)，Lanzhou Jiaotong Univ, Key Lab Rd & Bridge & Underground Engn Gansu Prov, Lanzhou, Peoples R China.
发表日期	2021
ISSN	0024-9831
EISSN	1751-763X
起始页码	1011
结束页码	1024
卷号	73 期号:19
英文摘要	The microstructure and transport properties of mortars made with graphene oxide (GO) and cement and with similar consistency were experimentally investigated and compared with those of control mortars made using Portland cement. Polycarboxylate superplasticiser was used to improve the consistency of GO-modified mortars and the dispersibility of GO nanosheets. Compared with the control samples, the GO-modified mortars with similar consistency showed a 33.2% reduction in the chloride migration coefficient and a 61.6% reduction in the initial rate of water absorption. These improvements are due to the addition of GO particles in the mortars, which inhibit crack growth, change the morphology of hydrated crystals and refine the pore structure. Very small amounts of GO additives were found to significantly decrease the macropore volume fraction and the critical and average pore diameters. In an attempt to understand the correlation between the pore size distribution and the macroscopic transport performance, both the critical pore diameter and the macropore volume fraction were found to be exponentially dependent on the chloride migration coefficient. The average pore diameter was found to be linearly related to the initial absorption rate of the mortars, but was independent of the secondary absorption rate.
关键词	PORE STRUCTURE MECHANICAL-PROPERTIES WATER PERMEABILITY CONCRETE COMPOSITES NANO-SIO2 REINFORCEMENT RESISTANCE NANOSHEETS DIFFUSION
英文关键词	cement; cementitious materials; permeability & pore-related properties; workability
语种	英语
WOS研究方向	Construction & Building Technology ; Materials Science
WOS类目	Construction & Building Technology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000691383300003
来源期刊	MAGAZINE OF CONCRETE RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254414
作者单位	[Zeng, Hongyan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China; [Zeng, Hongyan] Univ Chinese Acad Sci, Beijing, Peoples R China; [Qu, Shen] Lanzhou Jiaotong Univ, Key Lab Rd & Bridge & Underground Engn Gansu Prov, Lanzhou, Peoples R China; [Qin, Yinghong] Guangxi Univ, Coll Civil Engn & Architecture, Nanning, Guangxi, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Hongyan,Qu, Shen,Qin, Yinghong. Microstructure and transport properties of cement-based material enhanced by graphene oxide[J]. 中国科学院西北生态环境资源研究院,2021,73(19).
APA	Zeng, Hongyan,Qu, Shen,&Qin, Yinghong.(2021).Microstructure and transport properties of cement-based material enhanced by graphene oxide.MAGAZINE OF CONCRETE RESEARCH,73(19).
MLA	Zeng, Hongyan,et al."Microstructure and transport properties of cement-based material enhanced by graphene oxide".MAGAZINE OF CONCRETE RESEARCH 73.19(2021).