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Bonding strength test method assessment for Cross-Laminated Timber Derived Stressed-Skin Panels (CLT SSP)

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Abstract

Different methods, including bending tests and small and medium size shear tests, were used to assess the skin to stringer glue line shear strength of Radiata Pine Cross-Laminated Timber Derived Stressed-Skin Panels (CLT SSP). Bending test shear strengths were estimated using the mechanically jointed beam theory (gamma method) for Cross-Laminated Timber (CLT) panels with modifications in the layers’ effective widths, and then compared with results from the small and medium size shear tests. Small and medium size shear tests proved to be possible methods for assessing bonding strength for factory production control. The small shear tests provided lower strength values and higher scatter results than those gathered from the medium size tests. The mean shear strength results obtained from bending tests were inferior to the values obtained from the small and medium size specimens. The bending tests proved necessary for assessing the mechanical behaviour of CLT SSP.

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Acknowledgements

AITIM, Madrid, Spain (Technical Research Association for Wood Industries). CIFOR-INIA, Madrid, Spain (Timber Laboratory, National Agricultural Research Institute). Timber Research Group, Universidad Politécnica de Madrid, ayudas líneas de I + D programa de creación y consolidación de Grupos de Investigación Universidad Politécnica de Madrid, 2016. The panels were supplied free of charge by EGOIN SA.

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Authors and Affiliations

  1. AITIM -Technical Research Association for Wood Industries, Madrid, Spain

    Emilio Luengo

  2. Timber Laboratory, CIFOR-INIA - National Agricultural Research Institute, Madrid, Spain

    Eva Hermoso & Juan Carlos Cabrero

  3. Forest and Enviromental Management and Engineering Department, Escuela Técnica Superior de Ingeniería de Montes, Forestal y del Medio Natural, Universidad Politécnica de Madrid, Madrid, Spain

    Francisco Arriaga

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  1. Emilio Luengo
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  2. Eva Hermoso
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  3. Juan Carlos Cabrero
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  4. Francisco Arriaga
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Correspondence to Emilio Luengo.

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Luengo, E., Hermoso, E., Cabrero, J.C. et al. Bonding strength test method assessment for Cross-Laminated Timber Derived Stressed-Skin Panels (CLT SSP). Mater Struct 50, 204 (2017). https://doi.org/10.1617/s11527-017-1069-8

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