Biegefestigkeit und Biege-E-Modul von Fichtenbauholz im Temperaturbereich bis 150°C

Glos, P.; Henrici, D.

doi:10.1007/bf02619461

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…During fire, adhesives are exposed to even higher temperatures. In the outer regions of a timber beam, temperatures higher than 100°C can occur (Glos and Henrici 1991). In contrast, much lower temperatures are measured inside the beams due to the poor thermal conduction of wood.…”

Section: Introductionmentioning

confidence: 99%

Thermal stability of glued wood joints measured by shear tests

2010

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The thermal stability of glued wood joints is an important criterion to determine the suitability of adhesives in the field of engineered wood. During their product life, glued wood joints can be exposed to high temperatures in various ways (direct exposure to the sun, fire, etc.). Thereby the cohesiveness of the adhesive must not degrade. This raises the question of how the strength of bonding changes under thermal load. The current investigation covers the influence of temperature (T = 20 to 220°C) on the shear strength of glued wood joints. Different adhesive systems were investigated. With increasing temperature, the shear strength of solid wood and also of glued wood joints decreased. There were big differences in thermal stability and failure behaviour between the adhesive systems as well as within the polyurethane group. The thermal stability of one-component polyurethane systems can be greatly varied by modifying their chemical structure. Well adapted onecomponent polyurethane adhesives reach a strength similar to that of phenol resorcinol resin.

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Section: Introductionmentioning

confidence: 99%

Thermal stability of glued wood joints measured by shear tests

2010

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“…In this case, joint temperature can exceed 60 °C at the exposed spots (Falkner and Teutsch 2006;Cidlina et al 2014;Müller 2014). The effects of increased temperatures on bonded joints can also be seen in fires (Glos and Henrici 1991). In the wood structures sector, new adhesives have been developed in recent years, and, at the same time, the influence of increased temperature on bonded joints has been defined (George et al 2003;Frangi et al 2004;Richter et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature on the Strength of Bonded Joints

et al. 2015

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The objective of this study was to assess the influence of varying temperature on the strength characteristics of joints bonded using three types of one-component PVAc adhesives (i.e., Rakoll Express D3, Titebond II Premium, and Rhenocoll 3W, 4B Plus) that belong to the group of thermoplastic wood adhesives intended for non-construction bonding applications. The measuring procedure was a transverse tensile test for estimation of joint strength. As documented by the test results, a higher joint strength achieved at a higher temperature was achieved again after a gradual increase in the joint temperature from 20 °C to 140 °C and subsequent cooling to the starting temperature. After cooling the joint to the starting temperature, all tested adhesives complied with the minimum strength, namely 10 MPa. The results obtained in this study indicated that the resistance and thus the strength of joints bonded using contemporary PVAc adhesives increases with time.

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2016

Structural Design for Fire Safety

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Biegefestigkeit und Biege-E-Modul von Fichtenbauholz im Temperaturbereich bis 150°C

Cited by 5 publications

References 5 publications

Thermal stability of glued wood joints measured by shear tests

Thermal stability of glued wood joints measured by shear tests

Influence of Temperature on the Strength of Bonded Joints

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