Coconut Coir Polypropylene Reinforced Concrete

Abstract

This paper briefly discusses the effects of addition of synthetic fiber and natural fiber on the properties of mortar concrete mix of M25 at 28 days five concrete mix with fiber dosages 0%, 0.5%, 1.5%, 2.5%, 3.5%, 4.5%, of the weight concrete mix. Cement packing bags pieces of 1 to 2 cm of length is used as synthetic polypropylene fiber and coconut coir with the length of 2cm.to 3cm.used as of natural fiber. Combination of these fibers will used as dosages of mix fiber .Cubes of size 15x15x15 cm. to check the compressive strength. The result of fiber reinforced concrete for 7 days, 28days, curing of concrete. The testing of concrete according to Indian standard specification to identify the effect of workability and mechanical strength properties due to doses of combined fiber. Keywords: concrete, synthetic and natural fiber, drying shrinkage, compressive strength, compaction factor, workability test such slump cone test, compaction. INTRODUCATION The addition of combination fiber in concrete will control cracking due to shrinkage, thermal insulation, bleeding of water. The use of fiber is the awareness of environment is growing day by day. Worldwide researchers utilize materials which are ecofriendly. When we compared to synthetic fibers and manmade fibers, natural fibers become best alternative and it is cheaper and more economic then other composite material. These are environmental friendly composite material. In this experiment coconut coir fiber is the natural fiber. Fibers were mixed separately with polypropylene matrix and by using hand lay-up technique these reinforced composite material is molded .use of this fiber is as an alternative to controlling shrinkage, settlement cracking and temperature cracking. The flexural strength of concrete is greatly improved with the addition of this fiber, and provides an excellent replacement OBJECTIVES AND SCOPE The aim of this study is to investigate the effect of polypropylene fiber and coir fiber on physical properties of concrete the objectives of this works 1. To find out variation in compressive, tensile and flexural strengths of CFRC using processed fiber strands and raw fiber meshes at varying fiber contents and to compare it with that of conventional concrete 2. To determine the influence of shape of fibers on strength of concrete The scope of this research is limited to residential constructions. Light weight pavement, low cost of construction composition material, thermal insulation and chemical storage tanks and pipes ETC. LITERATURE REVIEW (1)Nandish S C et al (june 2015) This study describes the enhancement in the strength of the conventional concrete by the addition of fibres. Coconut fibres and polypropylene fibres are used to increase the strength of the concrete.. Slump test was carried on fresh concrete while compressive strength, split tensile strength and flexural strength were carried on hardened concrete. These tests are carried out to determine the mechanical properties of concrete up to 7, 28, 56 and 90 days for compressive strength, 28 days for split tensile strength and flexural strength. A notable increase in the flexural and tensile strength was found (2) Roohollah ET. Al [2012] We're investigating that Fiber addition was seen to enhance the physical and mechanical properties of lightweight concrete (LWC). Compared to Unreinforced LWC, polypropylene (PP) reinforced LWC with fiber proportioning 0.35% and12 mm fiber length, caused30.1% increase in the flexural strength. Increased fiber availability in the LWC matrix, in addition to the ability of longer Polypropylene fibers to bridge on the micro cracks, is suggested as the reasons for the enhancement in mechanical properties. (3) Praveen ET. Al [2013] Were the effects of variation of polypropylene fibers ranging from 0.1% to 0.4%along with 0.8% fibers on the behavior of fibrous concrete? The mechanical properties of the concrete such as Compressive and tensile strength have been founded. The result the addition of polypropylene fiber has a little effect on the Compressive strength, but there was increase in the tensile strength with increase in fiber volume fraction. As per investigation increase of 47%of split tensile strength and 50% of flexural strength is the result were ultimate load mainly depended on percentage volume fraction of fiber. (4) Parbhane ET. Al [2014] There were investigated that the workability and tensile strength of concrete increased to some extent as the coir increased. Concrete cubes produced by 1%, 2%, 3%, 4% &5% addition attained 28 days tensile strength of 2.68, 2.90,3.11, 3.25, 2.33 respectively.