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R. N. Palomar
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Agriculture, Biological Sciences & Forestry Library & Information Science

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DEVELOPMENT IN THE USE OF COCONUT FARM RESIDUES FOR THE MANUFACTURE OF COIR-WOOD-CEMENT AS ALTERNATIVE CONSTRUCTION MATERIAL R. N. Palomar; L. J. Penamora; N. J. Melencion
International Coconut Community Journal Vol 16 No 02 (2000): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v16i02.342

Abstract

A new product using farm wastes from coconut plantation is being developed as an alternative building material. The product, coir-wood-cement board (CWCB), is made from husk fiber of coir and shredded sapling or excelsior that are mixed separately with cement at a predetermined ratio of 70% cement to 15% coir excelsior by weight basis. Mixture of saturated coir/excelsior and cement is mat-formed and pressed to the desired thickness and then conditioned by air-drying to produce CWCB. Its dimension is 61 cm wide and 244 cm long with thickness ranging from 8 mm to 25 mm CWCB meets the strength requirements set by PHILSA standard specification for particleboard (PHILSA 106, 1975). It is being service-tested as an alternative material for expensive construction materials such as plywood, particleboard and cement hollow blocks. It has been found suitable for such uses as exterior/interior walls, partition panel and ceiling of building as well as furniture components such as table top and cabinet siding. Production of CWCB needs the major equipment/machinery such as decorticating machine, shredding machine, blending machine, hydraulic press, trimmer and lifter. Except for lifter, these machines can be designed and fabricated locally. Estimated total investment cost of PhP 3.76 million is needed to establish a CWCB plant that includes equipment, land rental, building and working capital. About 37,500 boards can be produced every year with internal rate of return of 35.20% and payback period of 2.68 years.
MARINE EXPOSURE TESTS OF COCONUT TIMBER R. N. Palomar
International Coconut Community Journal Vol 3 No 01 (1987): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v3i01.200

Abstract

Marine exposure tests of sawn coconut lumber were carried out for three years to determine the resistance, of treated coconut timber to marine borers. The test panels measuzing 50 mm x 100 mm x 450 mm, were installed in sea water between October, 1981 and September, 1984. Results showed three promising treatments. These were the vacuum/pressure method using chromated copper arsenate, the modifted double diffusion treatment employing mixture of copper adphate, sodium dichromate and arsenic pentoxide, and the hot and cold bath treatment with coal tar creosote. The specimens treated by these preservative systems showed trace or slight sur­face infestation while the untreated wood panels indicated from deep and extensive infestation to failure due to attack of marine borers. The perfomance of the treated medium density specimens appeared to be inferior than the hard samples indicating that only the latter materials should be used for marine structures.
EVALUATION OF SOME CHEMICALS FOR THE CONTROL OF BLUE STAIN FUNGUS AND PINHOLE BORER ON FRESHLY SAWN COCONUT TIMBER R. N. Palomar
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.223

Abstract

An investigation was made to determine the relative performance of some chemicals against growth of blue stain fungus and attack of pinhole borer on freshly‑sawn coconut timber during the drying process. The fungicides used were Farmay Plus, Azaconazole and the standard chemical combination of Sodium Pentachlorophenate, BHC and Borax Pentahydrate. Cislin, an insecticide, was mixed with either Farmay Plus or Azaconazole solution. Results after 12 weeks of air drying showed that all fungicides failed to give the desired protection against blue staining. Performance ratings of planed wood samples were within the range of heavy to severe stain infection. Although none of the fungicides was able to effectively control the blue stain fungus, their respective performance have been to some extent ascertained. On the other hand, Cislin showed an acceptable level of protection from pinhole borer infestation on coconut lumber.
VARIABILITY OF SOME MECHANICAL PROPERTIES OF SAN RAMON TALL VARIETY OF COCONUT R. N. Palomar
International Coconut Community Journal Vol 10 No 01 (1994): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v10i01.279

Abstract

The natural variation of some strength properties of about 80‑year old brown‑and green‑pigmented San Ramon variety of coconut was investigated. The properties were determined from tests on small clear specimens in the air dry condition with an average moisture content of 16.98%. The mechanical properties studied include modulus of rupture, stress at elastic limit and modulus of elasticity in static bending, maximum crushing strength in compression parallel to grain, stress at elastic limit and in compression perpendicular to grain, and shear parallel to grain. The brown‑pigmented trees showed significantly higher values in all the mechanical properties than the green‑pigmented palms. For the brown‑and green‑pigmented trees, the values of strength properties markedly decreased with increasing height levels and significantly increased radially from the core to the periphery of the stem.
Co-Authors L. J. Penamora N. J. Melencion