PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test

doi:10.3151/jact.19.321

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test
	Li, Kan 3; Wei, Zhiqiang 2; Qiaou, Hongxia 1,3; Lu, Chenggong 3; Theogene, Hakuzweyezu 3
刊名	JOURNAL OF ADVANCED CONCRETE TECHNOLOGY
	2021
卷号	19 期号:4 页码:321-334
ISSN号	1346-8014
DOI	10.3151/jact.19.321
英文摘要	The purpose of this study is to improve the interfacial performance between the concrete and polymer cement mortar (PCM) by using nano-SiO2. This study examined the bond properties of the inclusion of nano-SiO2 in the PCM based on splitting-tensile tests. In addition, the bonding mechanism was investigated with SEM. The results demonstrate that the inclusion of 2% nano-SiO2 in the PCM is beneficial to compressive strength and microstructure so as to obtain good interfacial bond strength as a repair layer mortar. The results also show that the increase in the surface roughness, the improvement of substrate concrete strength, vertical casting, and wet saturated interface state facilitate bond strength and change the failure mode of nano-SiO2 PCM/concrete composite specimens. At that time, the interfacial strength is predominantly influenced by the interface roughness and the old concrete strength through one-way analysis of variance. The results of SEM present that the interface of nano-SiO2 PCM/concrete composite specimen is more compact than that of the PCM/concrete composite specimen due to the transformation of harmful Ca(OH)(2) into more C-S-H gels and the formation of a better polymer film structure at the interface. As a result, mixing nano-SiO2 into PCM accompanied by adopting effective treatment method of surface and higher compressive strength of substrate concrete is significantly beneficial to bond strength.
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	JAPAN CONCRETE INST
WOS记录号	WOS:000644724300004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148269]
专题	理学院
作者单位	1.Lanzhou Univ Technol, Western Ctr Disaster Mitigat Civil Engn, Minist Educ, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Li, Kan,Wei, Zhiqiang,Qiaou, Hongxia,et al. PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test[J]. JOURNAL OF ADVANCED CONCRETE TECHNOLOGY,2021,19(4):321-334.
APA	Li, Kan,Wei, Zhiqiang,Qiaou, Hongxia,Lu, Chenggong,&Theogene, Hakuzweyezu.(2021).PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test.JOURNAL OF ADVANCED CONCRETE TECHNOLOGY,19(4),321-334.
MLA	Li, Kan,et al."PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test".JOURNAL OF ADVANCED CONCRETE TECHNOLOGY 19.4(2021):321-334.