Experimental Investigation on Flexural Behaviour of Flowable Rc Beam Using Welded Wire Mesh as Shear Reinforcement

Abstract

An alternative reinforcement system, Welded wire mesh is proposed to perform the function of transverse steel in Reinforced Concrete Beams. Welded mesh reinforcement eliminates some of the detailing problems inherent in traditional rebar in the Reinforced Concrete Construction resulting in easier and faster construction, and better economy and quality control. Since the mesh size is very small and to ensure strength and homogeneity, self-compacting concrete is to be used. Selfcompacting concrete consists of the same components as conventionally vibrated concrete with the addition of chemical and mineral admixtures in different proportions. In present study SCC is developed by replacing cement with silica fume of 4% and 6%. This project is to examine the flexural behavior and crack pattern of RC beam. Totally five variations of beam were caste and number of mesh layers with percentage of silica fume are varied in each specimen. It is obtained that the beam with continuous welded wire mesh and longitudinal bar given the maximum load carrying capacity and it is found that there is improvement in strength characteristics while using mesh layer and silica fume when compared with control specimen.

Fine Grain Concrete on Mixing Water Activated in Cavitation Permanent Magnet-Type Apparatus

“…Preliminary magnetic treatment of mixing water would result in enhancement of concrete compression strength, improvement of concrete flowability and the degree of mixture homogeneity. As the result, the concrete structure becomes more compact [2][3][4][5][6][7], water uptake and total porosity of concrete is lowered [8], concrete strain is reduced [9]. Magnetic water precludes the use of plasticizer as its molecules prevent aggregation of cement particles having impact on electric potential of the latter in much the same way as when the plasticizer is applied.…”