Structural Behavior of Thin RPC Wall Panels With Varying Steel Reinforcement and Aspect Ratio Subjected to Axial Eccentric Uniformly Distributed Loading

Abstract

This paper presents experimental study of structural behavior of thin Reactive Powder Concrete (RPC) wall panels subjected to axial eccentric uniformly distributed loading with varying steel reinforcement ratio (ρ) and aspect ratio (AR= H/L). The experimental program included testing of six two-way thin RPC wall panels, fixed at all sides and applying the load axially with eccentricity equal to (t/6). The results indicates that the ultimate strength of the RPC wall panel decreases with increase in AR from (1.25 to 2.00) for panels with H/t = 18.75. The decreasing in ultimate load for RPC wall panels is about 16% and 38.7%, for an increase in AR from 1.25 to 2.0 for panels with ρ = 0.012566, and about 6.38% and 36.2%, for an increase in AR from 1.25 to 2.0 for panels with ρ = 0.007854.The ultimate strength of RPC wall panel increases with an increase of percentage of steel reinforcement ratio (ρ). For an increase in reinforcement ratio from ρ = 0.007854 to ρ = 0.012566 the increase is about (6.4, 4.76 and 2.22) % for walls with AR (1.25, 1.50 and 2.00) respectively. The lateral deflection decrease with the increase of percentage of steel reinforcement ratio from (0.007854 to 0.012566) under two-way in plane loading, When AR= 1.25 the reduction about (1.22 times) and When AR= 2.00 the reduction about (1.11 times). The lateral deflection of RPC wall panels decrease with the increase in aspect ratio.

Numerical analysis of lightweight concrete wall panels having a variation of dimensions and openings that were subjected to static lateral loads

“…The maximum lateral loads ranged from 17.81 kN to 20.25 kN and 124.06 kN to 152.33 kN for framed and ICF wall panels, respectively. These experiments showed that ICF wall panels could resist higher lateral loads than the various framed wall panels that were tested [13,14]. Reinforced concrete openings in wall panels with slenderness ratios of 30, 35, and 40 were tested under uniformly distributed axial loads in one-way and two-way directions.…”

“…The loads increased in the higher range of normal concrete strength, while the opposite effect occurred in the RPC wall panels. The deflections increased in the higher aspect ratios of the normal concrete wall panels, while the opposite effect occurred in the RPC wall panels [14]. Previous studies have used various dimensions of wall panels; these include concrete wall panels with lengths and heights of 1200 mm, 1400 mm, and 1600 mm and all having the same 40 mm thickness.…”