Development of a Composite Board by Mixing Cement, Coir Fiber and Calcium Carbonate

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dc.contributor.authorJathunarachchi, P.N.
dc.contributor.authorWithanage, N.S.
dc.contributor.authorFernando, J.A.K.M.
dc.date.accessioned2022-03-15T10:15:50Z
dc.date.available2022-03-15T10:15:50Z
dc.date.issued2013
dc.description.abstractCoir fiber products have a great potential in domestic and international market in view of the world trend towards natural products. Now a days coir fiber reinforced cement boards are becoming more popular than harmful synthetic fiber reinforced cement boards. Their natural abundance, relative cheapness and instantaneous replacing ability are the strongest arguments to utilize them in the construction industry in Sri Lanka. In the Acetylene plant, calcium carbonate is the waste material. Due to its excellent filling ability and the availability, it can be used in composite board manufacturing. For the development of the coir industry and to add value to the wasting coir surplus and calcium carbonate waste from acetylene plant, it is required to investigate the possibility of using coir fiber and calcium carbonate in composite board manufacturing. This research was aimed at developing a coir fiber reinforced composite board by mixing cement, coir fiber and calcium carbonate via the determination of weight fraction of the constituents of the boards. In addition to that, the effect of various coir fiber types (Bristle fiber, Mattress fiber and Baby fiber) as well as various calcium carbonate ratios (10%, 20% and 25%) on board properties such as dry weight, thickness, density, water absorption and flexural strength were also determined. Then the possibility of using these composites in ceiling sheet manufacturing was studied. Methodology Three types of coir fibers (Bristle fiber, Mattress fiber and Baby fiber), Calcium Carbonate (CaCO3) and Ordinary Portland cement (OPC) were obtained locally. Calcium carbonate precipitates were ground and sieved using 0.5 mm sieve to obtain the calcium carbonate in powder form. Then bristle fiber and the mattress fiber were cut into 2 cm length in pieces. Preliminary studies were conducted to find out the suitable composition for the development of composite board using cement, coir fiber andcalcium carbonate. In the preliminary trials ten different composites were manufactured and evaluated its weight and other physical properties and it was observed that the composite C34B was not acceptable condition. Accordingly nine composite mixtures were selected for further testing of the physico-mechanical properties. Compositions of mixtures were given in table no 1. Ordinary Portland cement and calcium carbonate in various ratios were manually mixed with water and also coir fiber. The mixing of these ingredients was continually done until the cement, calcium carbonate and fiber paste were uniformly distributed. Then the mixture was spread out in a metal frame placed on a polythene sheet to form a board using mason’s trowel. The board was inserted in between the two plates of hydraulic press machine and it was densified by compressing it to a desired thickness using a hydraulic press. The pressure was maintained for 24 hours. The boards were removed from the press after 24 hours and soaked in the water for 7 days for curing and conditioning. The cement: calcium carbonate ratios were varied in 400:160,400:120,400:50 while cement and CaCO3 to fiber ratio was kept at a constant (10%) and the fiber types were also changed. The amount of water was fixed at 400ml per board.en_US
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/8515/10-PLT-Development%20of%20a%20Composite%20Board%20by%20Mixing%20Cement%2c%20Coir%20Fiber%20and%20Calcium%20.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.subjectAgricultureen_US
dc.subjectCoconuten_US
dc.subjectExport Agricultureen_US
dc.subjectconstruction industryen_US
dc.subjectEngineeringen_US
dc.subjectMechanical Engineeringen_US
dc.titleDevelopment of a Composite Board by Mixing Cement, Coir Fiber and Calcium Carbonateen_US
dc.title.alternativeResearch Symposium 2013en_US
dc.typeOtheren_US
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