| Abstrak/Abstract |
This study presents the bending test results of Meranti beams (Shorea spp, density 851 kg/m , MC 17 %) having an artificial crack reinforced with carbon fiber reinforced plastic, CFRP SCH-11. These beams have a cross-section of 55 mm by 95 mm with a length of 2000 mm and a crack was made at mid span at tension side having a depth of 25 mm to accommodate both strength and stiffness reduction of deteriorated beams. The test consisted of one crack beam without repairs (group A), three beams reinforced with CFRP sheets at the bottom face (group B), and another three beams reinforced with CFRP sheet at bottom face and both side faces with a depth of 25 mm (group C). In the case of group B and C, the three beams of each group had a differentiation in the length for the CFRP sheets: 0.33L; 0.5L; and 1.0L, where L is the clear-span of the beam measured to be 1800 mm. All the beams were tested under a four-point loading configuration until failure. The test results showed that the beam A had a bending moment capacity of 2.98 kN.m and failed due to crack propagation at the crack tip parallel-To-grain. Moment capacity of the beams B and C increases as the function of the CFRP sheet length increase and was measured to be 87 %, 92 %, and 127 %, respectively, for the beams B with the CFRP sheet length of 0.33L, 0.5L, and 1.0Z. While in the case of the beams C, this increase is 81 %, 121 %, and 210 %, respectively for the beams with the CFRP sheet length of 0.33L, 0.5Z, and 1.0Z. |
