Temperature Influence on the Bending Performance of Laminated Bamboo Lumber
Haitao Li, Wei Xu, Chen Chen, Lianshu Yao, Rodolfo Lorenzo
Abstract
In order to study the effect of temperatures on the bending performance of laminated bamboo lumber (LBL), 11 temperature conditions were set to test the bending performance in radial and tangential directions ranging from −60°C to 200°C, and 132 specimens were tested in total. Three typical failure modes were proposed. The bending strength and bending elastic modulus for all specimens were obtained from the test, and the effects of temperatures and loading direction on them were compared. Then, the mass loss rate of the specimens was calculated, and the variation law of the load-displacement curve was analyzed. Finally, the reduction (increase) factors of bending strength and bending elastic modulus varying with temperature were calculated, and the empirical formula for reference was proposed. It was found that the temperatures had a significant influence on the bending performance of LBL, and the loading direction had little effect on it.