PCM-Concrete Interfacial Tensile Behavior Using Nano-SiO2 Based on Splitting-Tensile Test | |
Li, Kan3; Wei, Zhiqiang2; Qiaou, Hongxia1,3; Lu, Chenggong3; Theogene, Hakuzweyezu3 | |
刊名 | JOURNAL OF ADVANCED CONCRETE TECHNOLOGY
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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. |
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