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Addition of palm fibre in cement concrete
- 1. ADDITION OF PALM FIBRE IN CEMENT CONCRETE BY S.SONIYA RAI,
- 2. INTRO…. • Our mini project deals with the compressive strength of the concrete using the addition of the palm fiber in cement weight in different percentage.. • IS method is used • The use of palm fiber increases the compressive strength and flexural strength by about 16% respectively… • The strengthening mechanism of the fiber involves transfer of stress from matrix to the fiber.
- 3. PRELIMINARY TESTS • TEST FOR CEMENT i) Fineness test ii)Normal consistency iii)Initial setting tim iv )Final setting time V)Specific gravity TEST FOR FINE AGGREGATE i)Fineness modulus Ii)Specific gravity TEST FOR COARSE AGGREGATE i)Fineness modulus Ii)Specific gravity Iii)Water absorption
- 4. COMPOSITION OF CONCRETE… • Cement(Portland cement). • Water. • Water–cement ratio. • Aggregate. • Reinforcement. • Fly ash. • Ground granulated blast furnace slag. • Silica fume. • Metakaolin.
- 5. MATERIALS USED …… • Cement(OPC 43) • Aggregate i) fine aggregate ii) coarse aggregate(20mm) iii) coarse aggregate(12.5mm) • Water • Palm fiber
- 6. FIBER • FIBER is a natural or synthetic substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. • The strongest engineering materials often incorporate fibers, for example CARBON FIBER and ultra-high-molecular-weight polyethylene.
- 7. WHY PALM FIBRE?? • The addition of palm tree powder in concrete mix is supposed to increase the general strength by adding flexibility..
- 8. PROPERTIES OF PALM FIBER • Average fiber length=30mm • Average fiber width=300microns • Tensile strength=21.2Mpa • Average specific gravity=2.32 • Water absorption%=0.72
- 9. METHODOLGY • Literature survey. • Materials property study • Mix design • Mixing and casting the specimen • Curing the specimen • Strength tests
- 10. ADVANTAGES OF PALM FIBRE • Renewable resource-healthy contribution to the soil. • Recyclable . • Reduce waste ,pollution and illogical use of fossil fuels associated with making disposable packaging.
- 11. RESULT AND DISCUSSION… • Tensile, compressive, and hardness results are presented including samples of the micrographs of the fractured samples. • It should be mentioned here that the tensile experiments have been conducted in one orientation with respect to the fibre ends. • In this orientation, the fibres were parallel to the applied load. However, in the compression and hardness tests, the samples were tested in two fibre orientations, that is, one parallel to the applied load and another opposite.
- 12. TENSILE BEHAVIOUR… • It is well known that glass fibres are very brittle materials and always are not recommended as reinforcement for composites under fatigue loading conditions. • In the current study, it can be seen that the addition of the date palm fibre preserves the ductility of the high density polyurethane despite the glass fibre addition in the composites. • The addition of either glass fibre or the date palm fibre enhances the mechanical properties of the HDPE(High Density Polyethelyene) since there is a significant increase in the tensile strength of the HDPE from 28 MP to about 50 MPa. • Addition of 6% natural fibres increases the tensile strength of HDPE to 38 MPa while synthetic glass fibre increases the tensile to 29 MPa only. This is mainly due to the fact that glass fibre has poor interfacial adhesion with the HDPE matrix. • The combination of both synthetic and natural fibres assists in increasing the tensile strength of the HDPE to the maximum value of 50 MPa.
- 13. TENSILE TEST….
- 14. COMPRESSION TEST