Dimensional Stability of Cement-Bonded Boards Manufactured with Coffee Chaff

  • AJAYI, Babatunde (Department of Forestry and Wood Technology Federal University of Technology)
  • 투고 : 2006.03.12
  • 심사 : 2006.07.20
  • 발행 : 2006.09.25

초록

Coffee chaff for manufacturing of the 6 mm thick cement-bonded boards was obtained from a coffee processing industry at Omuo-Ekiti, in Ekiti State, Nigeria. Boards were produced with three levels of cement to coffee chaff ratio of 1.5:1, 2.5:1 and 3.5:1; and at three levels of mixing curing reagent of 2.0%, 2.5% and 3.0%. Three dimensional properties of thickness swelling (TS), water absorption (WA) and linear expansion (LE) were investigated after 48 hours immersion in water. The mean values obtained for TS, WA and LE ranged from 0.46% to 1.47%, from 11.52% to 24.00%, from 0.19% to 0.35%, respectively. The most dimensionally stable boards were produced at the highest mixing levels of curing reagent and cement to coffee chaff ratio of 3.0% and 3.5:1, respectively. The coffee chaff is suitable as raw material for the manufacture of cement-bonded composites and it would be able to stimulate and activate the use of other agro-byproducts for the manufacture of value-added panels.

키워드

참고문헌

  1. Ajayi, B. 1982. Investigation of the physical strength properties of maize stalk-based particleboard. HND, Thesis; Schl. of Forestry, For. Res. lnst. of Nigeria, lbadan, Nigeria
  2. Ajayi, B. 2000. Strength and dimensional stability of cement-bonded flake board produced from Gmelina arborea and Leucaena leucocephala Ph.D. Thesis, Federal University of Technology, Department of Forestry and Wood Technology, Akure, Nigeria. 176p.
  3. Ajayi, B. 2001. Wood waste management inforest industries. Journal of Tropical Forest Resources 17(2) 91-102pp.
  4. Ajayi, 2003a: Assessment of the dimensional stability of cement-bonded particleboard from post-harvest banana stems residues and sawdust. In Proc. World Forestry Congress, $21^{st}-28^{th}$ September 2003 at Quebec City, Canada. Vol. A. pp157
  5. Ajayi, B. 2003b. Short term performance of clement-bonded hardwood flakeboards. Journal of Sustainable Tropical Agricultural Research 8: 16-19
  6. American Society for Testing and Materials 1978. Standard methods of evaluating the properties of wood-base fibre and particle panel materials. ASTM Desig. D1037-78. Philadelphia, Pennsylvania
  7. Badejo, S.O.O. and S. A. Giwa. 1985. Volume assessment and economic importance of wood waste utilisation in Nigeria. Technical Report No. 50. Forestry Research Institute of Nigeria, Ibadan
  8. Badejo, S.O.O. 1990. Sawmill wood residues in Nigeria and their utilization. Invited paper, Proceedings of National Workshop on Forestry Management Strategies for Self-sufficiency in Wood Production. Forestry research Institute of Nigeria, Ibadan, 12th-15th June 1990
  9. Badejo, S.O.O. 1999. Influence of process variables on properties of cement-bonded particleboards from mixed tropical hardwoods. Ph.D. thesis, Fed. Uni. Of Tech., Dept. of For. and Wood Tech. Akure, Nigeria. 255pp.
  10. Biblis, E. J. and C. F. Lo. 1968. Sugars and other wood extractives: effect on the setting of southern pine cement mixtures. Forest Prod. J. 18(8): 28-34
  11. Fuwape, J. A. 1992. Sorption properties of wood-cement particleboard as influenced by cement/wood ratio. J. Ind. Acad. Wood Sci. 23(1): 1-9
  12. Fuwape J. A. 1994. Compatibility of tropical wood residue with Portland cement-Journal of Timber Development Association (India) Vol. XL. No. 4
  13. Fuwape, J. A and I. A. Fuwape. 1995. Technical assessment of three-layer cementwood particleboard. Nigeria J. Forestry 24 (1 and 2): 57-60
  14. Geimer, R. L, M. R. Souza, A. A. Moslemi, and N. H. Simatupang. 1993. Carbon-dioxide application for rapid production of cement-bonded particleboard. In Moslemi. A.A. (Ed) Inorganic Bonded wood and Fiber Composite materials. Vol.3 Forest Prod. Res. SOC. Madison, WIS. pp 31-41
  15. Hawkes, A. J. and D. R. S. Cox. 1992. A small-scale process for manufacturing woodwool cement slabs in developing countries Bulletin 49. Natural Resources institute. 38pp.
  16. Kwon, H. E and R. L. Geimer. 1998. Impact of steam pressing variables on the dimensional stabilization of flakeboard. Forest Prod. J. 48 (4):55-61
  17. Lange, H., M. H. Simatupang, and Neubauer, A. 1989. Influence of latent hydraulic binders on the properties of wood-cement composite. In Proc. 1st Int. Conf. On Fiber and Particleboard. Bonded with inorganic Binders, Forest prod. Soc. Madison Wis. pp 48-52, in Moslemi A.A. (Ed)
  18. Lee, A. W. C. 1991. The latest developments in the cement-bonded wood excelsior (wood wool) board industry. In: Proc. Second International Inorganic Bonded Wood and Fiber Composite Materials. Forest Prod. Res. Soc. Madison. Wis. pp. 103-107
  19. Oyagade, A. O. 1994. Compatibility of some tropical hardwood species with Portland cement. Journal of Tropical Forest Science 6(4) 387-396
  20. Sandermann, W. 1970. Technical processes for the production of wood-wool cement boards and their adaptation for the utilization of agricultural residues. UNIDO. ID/ WG.83/4, 1970
  21. Simatupang, M. H. and R. L. Geimer. 1990. Inorganic binder for wood composites: feasibility and limitations. In: Proc. of Wood Adhesive Symposium. Forest Prod. Res. Soc. Madison, Wis. pp 169-176
  22. Simatupang, M. H., A. Kasim, N. Seddig, and M. Smid. 1991. Improving the bond between wood and gypsum. Proc. Second Int. Inorganic Bonded Wood and Fiber Composite Materials. For. Prod. Res. Soc. Madison Wis. pp.61-69. In Moslemi AA. (Ed)
  23. Simatupang, M. H., Rahim Sudin, and J. S Suh. 1993. The carbon-dioxide injection method. An environmentally friendly process to fabricate cement-bonded boards from oil palm trunk. Conf. on Forestry and Forest. Prod. Res. 1993. Kuala Lumpur, Malaysia. pp 117-127