Abstract
The capability to absorb energy, often called as toughness, is of importance in actual service conditions of mesh reinforced composites, when they may be subjected to static, dynamic and fatigue loads. Toughness evaluated under impact loads is the impact strength. The toughness of materials are determined by two methods, (i) by measuring deformation under impact load, (ii) by determining energy adsorption capacity of materials under impact load. Several methods were used to investigate to determining toughness of materials. In this research work, drop weight impact test were used. The present experimental work describes testing of flat ferrocement panels with different number of layer steel mesh as well as enhancement of panels with steel fiber. The main purpose of this study is to investigate the effect of using different number of wire mesh layer on the flexural strength and impact strength and also effect of varying thickness of panels on the energy absorption of ferrocement panels. The experimental work includes preparation of ferrocement panels reinforced with welded square mesh, woven square mesh with and without hooked steel fibers The ferrocement panels of different sizes were prepared and tested for flexural strength under the two point loading as well as drop weight for impact testing. It is expected that as the mesh layers will be increased the energy absorption capacity of the panel should be increased and the also its effect should be seen for addition of hooked steel fibers.
Highlights
INTRODUCTIONA high number of civil infrastructures is subjected to serious deterioration as result of chloride attack, carbonation, pollution etc. and many of the civil structures are not considered safe as because of overloading, to maintain the serviceability of older buildings as well to be strengthened and rehabilitation of historical monuments to maintain our cultural heritage
In order to improve the behavior of ferrocement, multiple ingredients such as silica fumes, admixtures, fly ash and fibers are added to it, in general the thickness of ferrocement ranges from 20-100mm. the fibers reinforced concrete is a composite material, essentially consisting of concrete reinforced by random placement of short discontinuous steel fiber
The experiment done to investigation the flexural behavior of fiber reinforcement ferrocement panels increment 60 plates of size 400x100x12.5mm were tested in bending included number of mesh layers and this continues fiber incorporate steel or PET two types of fibers steel and PET specimens were subjected under the different loading. result showed the some number of mesh layers are strongest assembly in both elastic and inelastic ranges shows a good in both flexural strength and energy absorption to failure too spalling of the mortar curve at ultimate load can be very effective with the addition of dis continuous fibers
Summary
A high number of civil infrastructures is subjected to serious deterioration as result of chloride attack, carbonation, pollution etc. and many of the civil structures are not considered safe as because of overloading, to maintain the serviceability of older buildings as well to be strengthened and rehabilitation of historical monuments to maintain our cultural heritage. Due to ductile failure of concrete, large cracking along with crack widths and deflections that will affect the structures appearance. As a result of the problems stated above it is vital to find a new material with improved behavior compared to concrete. In order to improve the behavior of ferrocement, multiple ingredients such as silica fumes, admixtures, fly ash and fibers are added to it, in general the thickness of ferrocement ranges from 20-100mm. Material Constituents of Ferrocement: Properties of material for ferrocement including the hydraulic cement mortar, according to the mix design for mortar concrete which include water, sand, wire mesh, Portland cement and admixtures.
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