Behaviour Of Ferrocement Research Articles

An experimental study on behaviour of ferrocement

Ferrocement (FC) is a composite material of cement matrix and reinforcement having multiple layers of mesh. It has been proved as a cheap, reliable method in construction industry and can be successfully applicable for low load bearing structures. This paper deals with the experimental study on different sections such as (channel sections, box sections, slab and plate) of ferrocement elements by using different diameter of wire mesh with different shear span to depth ratio. The shear capacity of ferrocement (FC) plates can be calculated. In this paper the volumetric fraction of wire as well as the area of reinforcement will be calculated. This paper gives an emphasis on the comparison of load carrying capacity of beams and plates by using different proportion of materials. The tests are conducted to find the load carrying capacity of beams and plates by using the mix composition of 1:2.5 (cement: sand) and 0.9:0.1:2.5 (cement: slag powder:sand) and the results are compared. The load testing of the beams as well as plates was done after 28 days of curing and conducted up to failure to determine the actual load carrying capacity of those elements. From this experiment it has been found that the load carrying capacity of ferrocement elements can be increased by increasing the number of layer of wire mesh. It is also found that up to a shear span to depth ratio 3, the shear behavior is predominant and beyond shear span to depth ratio 3, the flexural behavior is predominant.

Study on Suitability and Behaviour of Ferrocement in Folded Plates

Ferro concrete is one of the developments arising material an alternative for the traditional RCC in numerous viewpoints. Ferro concrete is the fate of the minimal expense houses and precast houses. Folded plates are answer for the more extended range rooftops in prudent and aesthetical manner. This project consolidates the upsides of both Ferro concrete and collapsed plate. The box type Ferro concrete collapsed plates of size 0.6 m x 1.80 m x 0.15 m are casted by thinking about various diaries and RCC collapsed plates in thought while fixing dimensions. In first period of trial various properties of materials utilized for projecting are tried and compressive strength of the mortar utilized is tried, the test is done at 1:2 of concrete: sand proportion and 0.35 water concrete ratio. In second stage the example is casted with Stainless Steel cross section of 2 mm opening is utilized and 2 layers on front and posteriors of 6mm width 150m divided skeleton steel is laid. The projected examples is tried for 28 days strength in stacking outline and the outcomes are contrasted and logical investigation Using ANSYS for load versus redirection and reasonableness of Ferro concrete application in collapsed plates are studies. The test results are shown acceptable outcomes, at last with low consumption and low self-weight Ferro concrete constructions are acceptable substitute for RCC.

Experimental study on behavior of ferrocement retrofitted unconfined URM wall under cyclic loading

Experimental study on behavior of ferrocement retrofitted unconfined URM wall under cyclic loading

Flexural behaviour of hybrid polyvinyl alcohol fibre-reinforced ferrocement containing different fibre types and volume fractions

This article presents an investigation into the flexural strength and behaviour of ferrocement panels containing different volume fractions of hybrid polyvinyl alcohol fibre. The research is focussed on the determination of the strength and the classification of the modified hybrid ferrocement panels. The consideration of 0.75, 1.0 and 1.5% fibre contents and the hybridisation effect of fibre in each mix are significant parameters in this study. In the experimental work, 9 control panels and 36 hybrid ferrocement panels, each of the size 620 mm × 200 mm × 40 mm have been tested for flexure, compression, indirect tensile and toughness. The test results show that the hybrid ferrocement panels have an increase in the flexure strength of up to 30% compared to the control ferrocement and mono-fibre-reinforced panels. Moreover, the tested hybrid fibre ferrocement panels exhibit deflection hardening and are classified using the toughness indices method as high-performance fibre-reinforced cementitious composite.

Flexural Behavior of Ferrocement Plates Incorporating Steel and PET Fibers

Ferrocement plate with steel meshes incorporating fibers in an identical matrix were tested under bending. The main objective of the study was to investigate the effects of combining reinforcing steel meshes with discontinuous fibers as reinforcement in thin mortar matrix. The variable parameters were chosen as (a) number of mesh layers, single and double (b) the types of fiber i.e steel and polyethylene terephthalate (PET). Everything else being equal, the test results shows that addition of steel fibers to the matrix of ferrocement can effectively increase its flexural strength and energy absorption to failure. Cracking and spalling of mortar cover also significantly reduced. On the other hand, the contributions of same volume fraction of PET fibers are not significant compared to steel. However, addition of PET fibers control the early cracking of thin mortar and showed slight improvement in flexural strength and energy absorption to failure compared to control specimens. Reinforcing ferrocement plates incorporating steel or PET fibers is recommended for providing technical and economical advantages as no negative effect was observed.

Interaction Curve for High Performance Ferrocement in Biaxial State of Tension

abstractFerrocement′s attribute as a thin reinforced concrete and laminated cement based composite enables numerous applications where strong and tough protective shell is needed. It is used in the construction of cylindrical and spherical shells as liquid retaining structures. The stress condition at a point in such shell structures is biaxial state of tension-tension. A study on the behaviour of ferrocement in biaxial state is important for establishing a rational design. The authors carried out a full-fledged investigation on ferrocement under different biaxial stress conditions. The present investigation deals with the study of ferrocement in biaxial tension-tension based on hollow cylindrical specimens. An interaction curve is proposed to estimate the strength of ferrocement in biaxial tension-tension. The relationship between octahedral normal and shear stress is also presented.

Behaviour of ferrocement confined reinforced concrete (FCRC) under axial compression

An experimental investigation on the behaviour of ferrocement confined reinforced concrete (FCRC) under axial compression, by varying the specific surface factor (Sf) which controls the behaviour of ferrocement, is presented. A total of 270 prisms of size 150×150×300 mm were tested. The results indicated that additional confinement in the form of ferrocement shell improved the ultimate strength, strain at ultimate strength and the ductility of concrete. The improvement is in proportion to the Sf of the ferrocement shell for a given confinement index (Ci) of the lateral reinforcement.

Strength and behaviour of ferrocement in shear

An experimental investigation on the shear strength of ferrocement is described. Tests were conducted on 155 simply supported rectangular ferrocement specimens under four-point loading. Variables of the study were the number of layers of wire mesh, two mesh layouts, strength of the mortar and shear span-to-depth ratio. Two types of shear cracking and failure, namely those due to flexure-shear and web-shear, were noticed. Test results indicate that for both of the mesh layouts considered, the shear strengths of ferrocement at cracking and at failure due to flexure-shear and web-shear increase as the shear span-to-depth ratio is decreased, and the volume fraction of mesh wires is increased. The shear stresses at which the web-shear crack and web-shear failure occurred were higher than the shear stresses at which the flexure-shear crack and flexure-shear failure occurred. Best-fit equations and characteristic strength equations are proposed for the shear strength of ferrocement in flexure-shear cracking, web-shear cracking, flexure-shear failure and web-shear failure.

Analysis and Behavior of Ferrocement in Flexure

Although the ultimate flexural capacity of ferrocement beams has been successfully predicted, few attempts have been made to predict deflections and crack widths under loading. Experiments were carried out to determine the load-deflection curves, crack distribution, and crack widths for ferrocement beams up to ultimate. Concurrently, an analytical model was developed to generate the nonlinear moment-curvature and load-deflection curves of ferrocement beams from the measured stress-strain curves for mortar in compression (including the descending portion) and steel meshes in tension. The model is shown to satisfactorily predict the load-deflection curves of ferrocement as well as those of reinforced concrete beams. A simple upper bound relationship is proposed to predict the average crack width in ferrocement for a given strain or stress in the extreme layer of steel mesh.