Characterizing the Performance of Adhesive Used in Glued-In Rod Timber Connections at Elevated Temperatures

被引：0

作者：

Flores, Diego ^{[1
]}

Dagenais, Christian ^{[1
,2
]}

Blanchet, Pierre ^{[1
]}

机构：

[1] Ind Res Chair Ecoresponsible Wood Construct CIRCER, Wood & Forest Sci Dept, Quebec City, PQ G1V 0A6, Canada

[2] FPInnovat, Pointe Claire, PQ H9R 3J9, Canada

来源：

JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES | 2023年 / 37卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

GLASS-TRANSITION TEMPERATURE; PULL-OUT STRENGTH; MECHANICAL-PROPERTIES; GLULAM PARALLEL; STEEL RODS; BEHAVIOR; EXPOSURE;

D O I：

10.1061/JPCFEV.CFENG-4416

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A glued-in rod, which combines timber, a metal rod, and structural adhesive, is a type of connection whose fire performance is complicated to define since the rod depends on the adhesive's thermomechanical properties. The objective of this study was to characterize the fire performance of adhesives used in glued-in rods. A total of five structural adhesives were tested: three epoxies and two polyurethanes. The tests performed consisted of applying an axial load to the glued-in rods after heating the connection to a target temperature. Load-slip curves were generated for each sample to determine their behavior at different temperatures. The results show that a reduction of up to 70% can occur in the initial stiffness of the glued-in rod when the temperature at the bond line exceeds the glass transition temperature of the adhesive determined by a dynamic mechanical analysis. This research helps to determine the guidelines for the fire design of glued-in rods and related testing and ultimately leading to a design method for providing fire-resistance to connections made of glued-in rods.

引用

页数：13

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