Conference Publication Details
Mandatory Fields
Sikora, K; Harte, A; McPolin, D
Civil Engineering Research in Ireland (CERI 2014)
Bond quality of cross-laminated timber (CLT) from Irish Sitka spruce
Optional Fields
Sitka spruce, timber bonding, Cross-laminated timber
The potential use of Irish-grown Sitka spruce for cross-laminated timber (CLT) manufacture is investigated as this would present new opportunities and novel products for Irish timber in the home and export markets. CLT is a prefabricated multi-layer engineered wood product made of at least three orthogonally bonded layers of timber. In order to increase rigidity and stability, successive layers of boards are placed cross-wise to form a solid timber panel. Load-bearing CLT wall and floor panels are easily assembled on site to form multi-storey buildings. This improves construction and project delivery time, reduces costs, and maximises efficiency on all levels. The paper addresses the quality of the interface bond between the laminations making up the panels, which is of fundamental importance to the load bearing capacity. Therefore, shear tests were carried out on nine test bars of three glue lines each. Moreover, delamination tests were performed on samples subjected to accelerated aging, in order to assess the durability of bonds subjected to severe environmental conditions. In addition, this paper gives an indication on thickness tolerances of planed Irish Sitka spruce lamellas, which is likely to be a critical factor for bonding quality and adhesive selection. The test results of bond quality presented in this study were within requirements of prEN 16351:2013.
Department of Agriculture, Food and the Marine
Grant Details
Innovation in Irish timber Usage: Project ref. 11/C/207
Publication Themes
Environment, Marine and Energy