coconut fiber.pptx

Project on coconut fibre for strengthening of concrete

1. Shetty Institute of Technology, Gulbarga Department of Civil Engineering Guidance : Prof. Rajkumar Ambalgi * Rahul. 3TS15CV024 * Shivaling . 3TS15CV030 * Vishwanath . 3TS15CV041 * Santosh . 3TS16CV030

2. EXPERIMENTAL STUDY ON EFFECT OF COCONUT FIBER IN THE STRENGTH OF CONCRETE

3. A BSTRACT The aim of this project is to spread awareness of coconut fibers as a construction material in Civil Engineering. This research describes experimental studies on the use of coconut fiber as enhancement of concrete. There are various types of fibres such as steel fibre , plastic fibre , nylon fibre , carbon fibres etc. And we used coconut fibre also known as coir fibre . Volume fraction of fiber of 0%,1%,2%,&3% M20 mix proportion the addition of fibres adversely affected the compressive strength.

4. C ONTENTS 1.Introduction 1.1 General 1.2 Natural Fiber 2.Literature review 3.Material study 4.Experimental study 5. Methodology 6. Expected Outcomes 7. Advantages 8. Disadvantages 9.References

5. I NTRODUTION 1.1 General Concrete is most widely-used Man made construction material and studies indicate that it will continue to be so in the years and decades to come. Concrete is good in compression and also it is very strong in carrying flexural force. 1.2 Natural fiber Natural fibers include those made from plant, animal and mineral sources we used Coconut fibers obtained from coconut husk. The common name, scientific name and plant family of coconut fiber is coir, Cocos nucifera and arecaceae (Palm), respectively.

6. L ITERATURE REVIEWS Ramakrishna G. And et all(2004 ) :- impact strength of a few natural fibers reinforced cement mortar slabs:a comparative study[topic]. Have experimentally investigated the resistance to impact loading, using a simple projectile test, on cement mortar slabs reinforced with four natural fibers, coir, sisal, jute, hibiscus and cannebinus . They have concluded that, out of the four fibers, coir fiber reinforced mortar slab specimen have shown the best performance. John v.M.Et all :- Have studied durability of mortar reinforced with coconut fibre.They are concluded finally increasing durability at the presence of coir.

7. M ATERIAL STUDY 3.1. Cement The cement used should confirm to IS specifications. Portland cement Specific Gravity is 3.15 the most known and available everywhere. OPC 53 grade confirms to IS 112:1989 is used for this study. 3.2. Fine Aggregate Naturally available fine aggregate is used for casting specimens. The fine aggregate was passing through 4.75mm sieve and had a specific gravity of 2.68.(Zone 2 II of IS 383-1970) 3.3. Coarse Aggregate Coarse aggregate are the crushed stone is used for making concrete. The maximum size of coarse aggregate used for this investigation is 20mm and the specific gravity is 2.78. 3.4. Water Water available in the college campus 3.5. Fibers Uniform length of fibers was obtained by using cutting machine.

8. Figure shows cement and coconut fibers

9. E XPERIMENTAL STUDY Material used cement OPC (53 Grade, conforming IS 8112-1989) Fiber volume fraction of 0%,1%,2%,& 3% . M20 mix proportion (10262-1982) Sieve analysis of course & fine aggregates (IS 383-1970) Hand mixing was used for convenient handling of coir fiber. Sand and cement were mixed dry and kept separately. Then coarse aggregates, coir fibers and dry mix of cement and sand were kept in three layers and approximate amount of water was sprinkled on each layer and mixed thoroughly. The cubes (150mm x 150mm×150mm) Each layer was compacted with 25 blows with 16 mm diameter steel rod.

10. METHODOLOGY

11. EXPECTED OUTCOMES Aziz et al. concluded that the tensile strength and modulus of rupture of cement paste increased when fibres up to 38 mm fibre length and 4% volume fraction were used. ... The results indicated that coconut fibres with a length of 38 mm and a volume fraction of 4% gave the maximum strength.

12. ADVANTAGES As stated, the main advantage of fiber-reinforced concrete is the reduction of shrinkage and cracking. The right fiber-reinforced concrete can also provide impact-resistance, increase tensile strength and reduce voids in the concrete.

13. DISADVANTAGES A disadvantage of fiber-reinforced concrete is that it can adversely affect workability, especially in the case of steel fiber-reinforced concrete. Even distribution of fibers throughout your concrete is a concern. There may also be a danger of fibers balling during mixing. Another disadvantage to be aware of is that fiber-reinforced concrete is heavier than non-fiber concrete. If you’re using steel fibers, there’s also the danger of corrosion. Finally, fiber-reinforced concrete tends to be more expensive than ordinary concrete, although the cost could be offset by other factors.

14. R EFERENCES Asasutjarit C., Hirunlabh J., Khedari J., S. Charoenvai,B . Zeghmati , U. CheulShin (2007),“Development of coconut coir-based lightweight cementboard ”, Construction and Building Materials vol.21, pp.277–288  Majid Ali , Anthony Liu, Hou Sou , Nawawi Chouw (2012), “Mechanical and  dynamic properties of coconut fibre reinforced concrete”, Construction and Building Materials vol.30 pp.814–825.  John V.M., Cincotto M.A., Sjostrom C., Agopyan V., Oliveira C.T.A, (2005) ,

15. Li, Z., Wang, L., and Wang, X. (2006). "Flexural characteristics of coir fiber reinforced cementitious composites”. Fibers and Polymers. 7(3), 286-294  Mansur M. A and Aziz M. A, “Study of Bamboo-Mesh Reinforced Cement  Composites” Int. Cement Composites and Lightweight Concrete”, 5(3),1983,pp. 165–171.  Ramakrishna,G ., and Sundararajan,T . (2005). "Studies on the durability of natural fibres and the effect of corroded fibres on the strength of mortar." Cement and Concrete Composites, 27(5), 575-582  Yuhazri M.Y., and Dan M.M.P., (2007) Helmet Shell Using Coconut Fibr (Deco- Helmet). Journal of Advanced Manufacturing Technology, Vol. 1 (No.1 pp. 23-30. ISSN 1985-3157.

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