Bending Properties of Glass Fiber Reinforced Concrete Panel Using Glass Fiber Mat and Mesh

This research studied the bending properties of glass-fiber reinforced concrete (GRC) panels using glass fiber mat and mesh. The concrete-panel specimens used in this study were 50x10x250 mm. Parameters used in this study were: 2 different types of glass fibers, i.e. glass fiber mat and mesh; 3 different fiber contents, i.e. 2, 4 and 6 layers of fibers; and 3 different concrete strengths, i.e. 46, 58 and 78 MPa. The bending properties of GRC panels were obtained from 4-points bending test in accordance with BS EN 1170-5: 1998 Standard, whereby the span length of testing was 200 mm and all specimens were tested at 7 days. The test results showed that, at the same fiber content and concrete strength, the use of glass fiber mesh for concrete panels gave the better bending behavior after cracking than the use of glass fiber mat, especially ductility. However, the use of glass fiber mesh gave significantly lower the bending strength at limit of proportion (LOP) than the use of glass fiber mat. This might be due to the partial loss of mortar area at bottom fiber from the partial replacement by the continuously glass fiber mesh.