COMPRESSION STRENGTH OF COMPOSITE GLULAM TIMBER REINFORCED BETWEEN FIRST AND SECOND, THIRD AND FOURTH LAMINA
DOI:
https://doi.org/10.11113/jt.v78.8550Abstract
The use of GFRP sheet as reinforcement in Mengkulang glulam timber is considered to be particularly promising, since the durability of Mengkulang glulam is improved and the application is easier and faster due to lightweight properties of GFRP. Fiber reinforced polymers incorporated with glulam provide significant gains in strength and stiffness, as well as modify the rupture mode of these structural elements. In this study, compression test was carried out on two types of specimen, reinforced and unreinforced Mengkulang glulam block. Size of Mengkulang glulam block is 120 mm x 120 mm x 120 mm. For reinforced glulam block, GFRP sheet was placed between the first and second layer, third and fourth layer of lamina. The compression load was applied perpendicularly to the timber grain. Compression test is carried out using Universal Testing Machine (UTM 1000kN). Consequently it has been noted that by layering GFRP sheet between lamina could increase the compression strength of glulam to resist load. Significant differences between unreinforced and reinforced specimens are 12.6 percent. The highest average compressive strength of reinforced and unreinforced glulam is 11154.05 kN/m2 and 9808.75 kN/m2 respectively.
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