Experimental behaviour of threaded steel rods glued into high-density hardwood

Joints with bars glued-in softwood laminated timber subjected to climatic cycles

“…The density of the timber was determined for a wood humidity content of 12%, obtaining an average value of 452.3 kg/m 3 (standard deviation 24.8).Threaded steel bars with a nominal diameter (d) of 12 mm and a quality of 10.9 [39] were used. The used adhesive was a two-component epoxy (HILTI HIT-RE 500) that had proved adequate for this application in previous tests, carried out in standard climatic conditions (20ºC/65% RH) [10][11][12][13]15]. Component A was a bisphenol A/F base epoxy resin with inorganic filler (30-40% bisphenol-Aepoxy resin, 10-20% bisphenol-F-epoxy resin, <15% hexandiolglycidylether, <10% alkylglycidylether)and the component B was an aliphatic polyamine with inorganic filler (30-40% m-xylylene diamine), with a density of 1.5 g/cm 3 (20ºC) and a viscosity of about 50 Pa•s (23ºC).…”

“…Most of the existing literature has focused on the analysis of the behavior of joints made on softwood glulam timber in short-length tests [1,2], while the studies which have evaluated the behavior of rods glued in hardwood timber remain limited [6][7][8][9][10][11][12][13].…”

Influence of the geometric and material characteristics on the strength of glued joints made in chestnut timber

“…The obtained results have been also used to evaluate the correspondence with the previous existent studies on glulam [3]. The experimental results of an extensive experimental research on glued joints made in chestnut hardwood timber are described in this paper.…”

Análisis experimental de uniones con barras de acero encoladas en maderas de castaño y elondo

“…This was both in keeping with standard recommendations on the use of thin layers of glue and within the range recommended by the adhesive manufacturers. Prior studies (2) showed that the extra volume of adhesive needed for thicker layers of glue was not offset by proportionally higher ultimate load values.…”