Local bridging effect of fractured laminated glass with EVA based hybrid interlayers under weathering actions

Yang, Jian and Wang, Yige and Wang, Xing er and Hou, Xiaonan and Zhao, Chenjun and Ye, Jianqiao (2022) Local bridging effect of fractured laminated glass with EVA based hybrid interlayers under weathering actions. Construction and Building Materials, 314 (B). ISSN 0950-0618

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Abstract

Local bridging ability between fragments including bridging force and adhesion concerns the post-fracture performance of laminated glass (LG). Weathering actions such as heat and lighting radiation can greatly damage bridging ability. The bridging behaviour of fractured LG under diverse weathering actions was examined in this work. Material specimens made of single EVA interlayer and hybrid EVA/PC interlayer, which were developed to provide better degradation resistance and long-term post-fracture performance for LG products, were manufactured. Uniaxial tensile tests on the interlayer specimens and through-crack tensile (TCT) tests on fractured LG specimens were performed after the specimens were exposed to the weathering actions including different temperatures, damp heat, and radiations from laboratory light source. Experimental observations, testing data such as bridging force–displacement relationship, normalized force and stress were analysed to discuss the effects of the weathering actions. Finally, the equivalent adhesion energy was determined to describe the failure of interfacial bridging. It is found that temperature rise to over 60 °C will greatly damage the bridging ability even for the specimens with hybrid interlayers, which also present limited bridging effects when temperature increases to nearly 100 °C. Damp heat and lighting treatment are found to have limited effects on the adhesion resistance of hybrid interlayer, although the former may facilitate interlayer rupture and the latter may result in greater degradation of adhesion energy.

Item Type:
Journal Article
Journal or Publication Title:
Construction and Building Materials
Additional Information:
This is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials, 314, B, 2022 DOI: 10.1016/j.conbuildmat.2021.125595
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500
Subjects:
ID Code:
163551
Deposited By:
Deposited On:
16 Dec 2021 16:15
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Jan 2022 06:32