G. N. M., Ilias and Abdullah, Faridah (2003) Pressure Treatment of Fresh and Ponded Heritiera mirror (Roxb.) Logs with Chromated Copper Arsenate (CCA). Pertanika Journal of Tropical Agricultural Science, 26 (2). pp. 89-92. ISSN 1511-3701
Sundri (Heritiera minor Roxb.) is a hardwood species which exhibits good strength qualities. They have potential for use as electric poles but their short service life posed a problem. This study examined whether treatment with the preservative Chromated Capper Arsenate (CCA) by full cell pressure method at 15.40 - 16.10 kg/cm2 for 8 hours could extend their service life. The samples tested were processed fresh and ponded H. minor logs of approximately 1 m length and 0.25 m diameter. Results showed that that the preservative treatment gave a mean penetration value of 23.84% log radius for fresh specimens and 32.29% for ponded logs, which were short of the standard requirement of 44% log radius penetration. The preservative retention of ponded logs was within the acceptable standard values of 20 kg/cm2of dry oxide basis, but that offresh logs did not meet the standard requirement. Thus, the full pressure treatment can extend the service life of H. minor to a certain extent in which ponded logs gave encouraging response to the preservative treatment.
|Keyword:||Preservative, pressure treatment, logs, chromated copper arsenate|
|Faculty or Institute:||Faculty of Science|
|Publisher:||Universiti Putra Malaysia Press|
|Deposited By:||Farhana Yusof|
|Deposited On:||26 Nov 2009 03:46|
|Last Modified:||27 May 2013 07:08|
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