Performance of Reinforced Concrete Beam with Differently Positioned Replacement Zones of Block Infill under Low Impact Loads

Abstract

This paper reveals a study performed on reinforced concrete with artificial aggregate concrete block infill composite beams to innovate a lightweight reinforced concrete utilizing polyethylene (PE) waste materials, such as waste plastic bags. Six beam specimens of normal reinforced concrete (NRC) and different block infill replacement zone positions RCAI (RZ 1) beams containing 100% MAPEA with 50, 95, and 1,000 mm width, height, and length, respectively, were provided for the block infill, whereas RCAI (RZ 2) with different block infill positions containing a 100% MAPEA with 50, 115, and 1000 mm width, height, and length were provided and tested under low impact load. The steel impactor with blunt nose dropped at 0.6 m height which equivalent to 3.5 m/s. The behaviors of the beams were studied relative to the impact force-time and displacement-time histories, the flexural/ bending cracks, and the impact failure. Results show that the overall failure modes of all the beam specimens were successfully recorded. In addition, the residual displacements of the RZ 2 was almost same than those of the RZ 1 and the significantly lower than those of the NRC. In the reinforced concrete beams, less stressed concrete near the neutral axis can be replaced by certain light weight material like waste plastic bags as modified artificial polyethylene aggregates to serve as an artificial aggregate.

Structural Behavior Of Simple Supported Two Layers Reinforced Concrete (Normal strength concrete & Mortar with 3-Dimension glass fiber), Beams

“…To check the mix strength for standard strength concrete, cubes, cylindrical and prisms specimens Table (6) shows the dimension, test type, and specimen number for each mix.…”

“…For Fig. (6), which represents the load-deflection relation of the layered beam with mortar and layer of glass fibre (for all replacement thickness) and the HRC beam result from the test, high effects of the layer type on the curvature of the result line and so on the load capacity of the beams, stiffness, ductility and toughness.…”

Utilization of Magnesium-Rich Synthetic Gypsum as Partial Replacement Material in Concrete

“…In Malaysia, the use of sustainable concrete is not very common; due to the availability of the raw materials in the market but in the future, the availability of raw materials cannot be guaranteed. In fact, sustainability is an essential concern to satisfy the demands of the present generation without compromising the future generations to meet their needs [4]. The integration of alternative materials help both saving natural resources and reducing waste disposal by incorporating urban and industrial wastes into concrete for sustainable construction due to the environmental concerns and concept of circular economy but its application is still not widespread [5].…”

Performance of Hollow Reinforced Concrete Beam in Structural Member

“…In Malaysia, the use of lightweight concrete is not very common; this may due to large amount of raw materials still available in the market but in future, the availability of raw materials cannot be guaranteed. In fact, sustainability is essential concern to satisfy the demands of the present generation without compromising the ability the future generations to meet their needs [3]. For example, if the world runs out of limestone, as it is predicted to happen in some places, then the Portland cement cannot be produce, therefore, concrete also cannot be produce.…”