Behaviour Of Steel Fibre Lightweight Wall Panel Under One Way In-Plane Action

摘要

Plain lightweight wall panels with steel fibre and expanded polystyrene (EPS) beads, used as lightweight aggregate are tested to ascertain the structural behaviour mechanism at ultimate state. Wall samples of four (4) different sizes are prepared comprising two (2) samples for each size. Samples height and thickness are fixed to 600mm and 40mm respectively, so that all samples would have a constant slenderness ratio (SR) of 15. The width is made to vary as 320mm, 400mm, 560mm and 800mm, giving different aspect ratios (AR) of 1.875, 1.5, 1.07 and 0.75 respectively. Steel fibre lightweight concrete has a compressive strength, fcu of 14.29N/mm2. The ultimate carrying strength of the wall panel ranges from 100kN to 138kN and the highest strength is from the wall panel with aspect ratio of 1.5. All wall samples deformed in a single curvature profile with maximum lateral displacement of 6.92mm happened at mid-height of the panel. Carrying capacity of wall panel is calculated to be inversely proportional to the aspect ratio.