Mechanical Performance Degradation of Recycled Glulam Under Simulated Marine Atmosphere
Abstract
To utilize recycled glulam in coastal constructions, the physical and mechanical properties of original and aged recycled glulam under simulated marine atmosphere by considering different salt spray corrosion duration were experimentally studied. The results show that after aging treatment and salt spray corrosion, no obvious debonding of the adhesive layer was observed. Salt spray test shows a more remarkable effect on the color difference of the specimens than accelerated aging test. The physical properties of the original and aged recycled specimens change most obviously after the end of the first salt spray stage (12 days). After salt spray corrosion, the main failure mode of specimens was oblique shear failure, and no obvious cracking failure of the bonding interface was observed in the compression test. Three failure modes were obtained in the shear test, indicating that aging test may show a more remarkable effect on the adhesive layer than the laminates themselves. Except for the ductility ratio, the mechanical properties of the recycled glulam in the salt spray environment decreased with the increase of salt spray corrosion duration, and the downward trend in the mechanical properties of aged specimens was more obvious than that of original ones. The compression and shear constitutive models of recycled glulam affected by corrosion duration are proposed.
Reference
Shan Gao; Linqiang Zhou; Lanhui Guo; Man Xu. (2022). Mechanical Performance Degradation of Recycled Glulam Under Simulated Marine Atmosphere. Elsevier BV. https://doi.org/10.2139/ssrn.4087428
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