Fracture properties of polyvinyl alcohol modified cement mortar

被引：0

作者：

Fan J. ^{[1
]}

Li G. ^{[1
,2
]}

Xiong G. ^{[1
,2
]}

Li Q. ^{[3
]}

机构：

[1] Department of Civil Engineering, Shantou University, Shantou

[2] Key Structure and Wind Tunnel Laboratory of Colleges and Universities in Guangdong Province, Shantou University, Shantou

[3] College of Civil Engineering and Architecture, Zhejiang University, Hangzhou

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2016年 / 19卷 / 02期

关键词：

Fracture parameter; Fracture property; Modified cement mortar; Polyvinyl alcohol(PVA);

D O I：

10.3969/j.issn.1007-9629.2016.02.021

中图分类号：

学科分类号：

摘要：

Effect of polyvinyl alcohol(PVA) on the fracture properties of cement mortar was investigated. The fracture parameters such as unstable fracture toughness and initial fracture toughness were obtained through double K fracture model. Results show that the critical crack mouth opening displacement, ultimate crack mouth opening displacement and crack tip opening displacement of PVA modified cement mortar increase with the increase of PVA content. For the unstable and initiation fracture toughness, the optimum PVA content in mortar is 1.0%(by mass), it will be increased by 38.31% and 40.82% as compared with the control. Additionally, the basic fracture parameters and corresponding double K fracture parameters of cement mortar beam are showing a significant quadratic parabolic curve variation with PVA content. © 2016, Editorial Department of Journal of Building Materials. All right reserved.

引用

页码：336 / 341and358

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