Flexural Behaviour of Glulam-Concrete Composite Beams Reinforced Using CFRP Sheets Rachmat Hakiki (a*), Mujiman (b)
a) Master of Applied Infrastructure Engineering, Politeknik Negeri Bandung, Jalan Geger Kalong Hilir, Ds Ciwaruga, Bandung 40012, Indonesia
*rachmathakiki[at]gmail.com
b) Dapartment of Civil Engineering, Politeknik Negeri Bandung, Jalan Geger Kalong Hilir, Ds Ciwaruga, Bandung 40012, Indonesia
Abstract
Timber bridges are difficult to produce adequate rigidity, with the application of composites can support wood as a bridge structure, namely with timber lamination technology and the addition of reinforcement using CFRP (Carbon Fiber Reinforced Polymer) in order to produce effective and efficient composite structures. The experimental study aims to analyze the strength, stiffness and ductility of flexural behaviour of glulam-concrete composite beams reinforced using CFRP sheets. The dimensions of the composite glulam timber beams 100/180 mm and concrete plate 75/300 mm with a length of 2,480 mm. The number of specimens is 4 timber composite beams-concrete plates consisting of 1 test beam without CFRP reinforcement, 1 test beam with one sheets CFRP reinforcement, and 1 test beam with two sheets CFRP reinforcement and 1 test beam with three sheets of CFRP reinforcement. Flexural testing is carried out on two simple pedestals with third point loads each placed at 1/3 span length. The test results show that the strength of laminated wood composite-beams concrete plates BC; BFRP-1; BFRP-2 and BFRP-3 respectively 81.32; 83.82; 89.32; 82.32 kN/mm; stiffness in a row 7.51; 8.22; 7.87; 6.32 kN /mm and the ductility are 16.67; 28.83; 23.16; 20.21
