Effect of Highland Barley Straw Ash on the Bonding Strength of Magnesium Oxychloride Cement Mortar

doi:10.11896/cldb.22040311

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	Effect of Highland Barley Straw Ash on the Bonding Strength of Magnesium Oxychloride Cement Mortar
其他题名	青稞秸秆灰对氯氧镁水泥砂浆粘结强度的影响
	Shu, Xiuyuan 1; Qiao, Hongxia1,2 ; Cao, Feng 1,2; Cui, Lijun 1
	2023-12
发表期刊	Cailiao Daobao/Materials Reports
ISSN	1005-023X
卷号	37 期号:23
摘要	In order to study the process of using magnesium oxychloride cement mortar (MOCM) modified with highland barley straw ash (HBSA) as a protective layer for ordinary concrete (NC) to resist brine erosion in the western salt lake area, this work uses ordinary concrete as a bonding agent. For the base layer, the effects of factors such as incorporating HBSA into MOCM, applying interface agents on the concrete base layer, and different MOCM thicknesses on its bonding strength were studied. The influence of various factors on the bond strength of MOCM was studied through bond pull⁃out tests, the optimal design parameters were determined, and the damage and deterioration rules of the bond strength of HBSA⁃modified MOCM under salt brine erosion environment were further analyzed. The phase composition, functional group structure and micromorphological characteristics of MOCM were analyzed by microscopic testing technology, and the mechanism of the influence of HBSA on the bonding properties of MOCM was revealed. The results show that the MOCM with a thickness of 18 mm, doped with HBSA and coated with an interfacial agent has the highest bond strength and the strongest resistance to salt brine erosion. There are more active SiO2 in HBSA, which can undergo secondary hydration reaction with the hydration product of MOCM to generate hydrated magnesium silicate (M⁃S⁃H) gel, which fills the internal pores of MOCM, enhances compactness and improves bond strength. © 2023 Cailiao Daobaoshe/ Materials Review. All rights reserved.
关键词	Bond strength (materials) Calcium silicate Cements Concretes Deterioration Hydration Magnesium compounds Mortar Silica Silicates Silicon Straw Structure (composition) Active mixed material Barley straws Bonding property Cement mortars Highland barley straw ash Influence mechanism Magnesium oxychloride cement Magnesium oxychloride cement mortar Micro-structures Mixed materials Straw ashes
DOI	10.11896/cldb.22040311
收录类别	EI
语种	中文
出版者	Cailiao Daobaoshe/ Materials Review
EI入藏号	20235215277033
EI主题词	Erosion
EI分类号	412 Concrete ; 412.1 Cement ; 414.3 Mortar (Before 1993, use code 412) ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 804 Chemical Products Generally ; 821.5 Agricultural Wastes ; 951 Materials Science
原始文献类型	Journal article (JA)
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169917
专题	土木工程学院
通讯作者	Qiao, Hongxia
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Civil and Tansportation Engineering, Qinghai Minzu University, Xining; 810000, China
第一作者单位	土木工程学院
通讯作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Shu, Xiuyuan,Qiao, Hongxia,Cao, Feng,et al. Effect of Highland Barley Straw Ash on the Bonding Strength of Magnesium Oxychloride Cement Mortar[J]. Cailiao Daobao/Materials Reports,2023,37(23).
APA	Shu, Xiuyuan,Qiao, Hongxia,Cao, Feng,&Cui, Lijun.(2023).Effect of Highland Barley Straw Ash on the Bonding Strength of Magnesium Oxychloride Cement Mortar.Cailiao Daobao/Materials Reports,37(23).
MLA	Shu, Xiuyuan,et al."Effect of Highland Barley Straw Ash on the Bonding Strength of Magnesium Oxychloride Cement Mortar".Cailiao Daobao/Materials Reports 37.23(2023).