The Nigerian Journal Of Forestry

 Journal

 Impact Of Hot And Cold Treatment Techniques On Preservative Absorption Of Gmelina Arborea Wood

 Owoyemi, J.M. And Kayode, J.O.

 2007

The absorption of some selected preservatives using hot and cold treatment techniques on Gmelina arborea wood was evaluated in this study. The preservatives used are Copper Chrome Arsenate (CCA), Creosote Oil (CREO) and Cashew Nut Shell Liquid (CNSL). Hot and cold dipping methods of application were used for the treatments on Gmelina arborea wood. The result revealed that hot dipping significantly improved the uptake of the preservatives by the wood samples with percentage absorption of 9.65±4.32; While CNSL has the least absorption of 5.18±1.3 for hot treatment. 

 Bulletin Of Pure And Applied Sciences

 Journal

 Effects Of Chromated Copper Arsenate And Creosote Oil On The Resistance Of Gmelina Arborea Wood (Roxb) To Termites’ Attack

 Owoyemi, J.M. And Kayode, J.O.

 2007

The resistance of Gmelina arborea wood treated with Chromated Copper Arsenate (CCA) and Creosote Oil (CREO) was investigated. Gmelina arborea wood samples, aged fifteen years were treated with CCA (4%, 3% and 2% concentration) and CREO (Undiluted, 1:1 Kerosene and 1:3 kerosene mixture) using cold dipping method. The effect of cold dipping on the absorption of these preservatives on Gmelina arborea wood was carried out through field exposure test for 36 months (3years). Weekly visual observations were taken to determine the effect of time on the exposure of sample pieces to termite attack: Field exposure test for the varied levels of concentration of preservative treatment of Gmelina arborea showed that the wood treated with CCA 4%, 3% and 2% concentrations were able to resist termite attack for 36 months with no visible scar, while CREO treated samples were moderately resistant: Analysis of variance of the test showed that there was no significant difference (p 

 JoyBam Prints, Akure, Nigeria

 Others

 Woodwork Practice, In: Basic Engineering Workshop Manual Edited By E.I. Bello, A.O. Akinola, And S.P, Ayodeji,

 Owoyemi J.M

 2006

Wood is an indispensable engineering material that has served man from time immemorial. It was one of the earliest discovered materials endowed by nature with its source renewable and with the lowest tooling cost. Early craftsman relied on t as the material to meet most of his needs, and it is being used today for various forms of construction work. Nigeria is blessed with abundance of natural forests. The geographical location of Nigeria in the tropical region has naturally favoured the growth of trees, which produce the abundance of wood that Nigeria requires.