Aboveground subterranean termite test of borate-treated rubberwood Hevea brasiliensis chipboard

Wong Andrew H.H., . and Grace J. Kenneth, . and Manning Mark J., . (2006) Aboveground subterranean termite test of borate-treated rubberwood Hevea brasiliensis chipboard. [Proceedings Paper]

Boric acid treated mean retention: 1 and 1.1 boric acid equivalent BAE rubberwood Hevea brasiliensis chipboard sheets prepared in a commercial mill-run were sampled off the hot press within a 3 hr 40 min run time of board production. Chipboard samples were cut into slabs of 50x150 long x 8 thick mm along the width of the boards per selected run time interval for the aboveground H2 Hazard Class termite test wood exposed to termite threat protected from leaching designed by Wong 2005 at a Malaysian rainforest site against Coptotermes curvignathus. The chosen BAE retention represented minimal dosages where timber species can be protected against subterranean termites. The test methodology was proven highly successful in aggregating C. curvignathus termites into the field test assembly promoting severe degradation on both the susceptible solid rubberwood and untreated chipboard included in the design. Visual ratings and mass loss results clearly demonstrated the high termite resistance of chipboards treated with boric acid at both 1.0 and 1.1 mean BAE reinforcing recent laboratory findings on the same test materials Wong and Grace 2004. There was consistent termite resistance regardless of the sampling time interval hence length of chipboard of board production. The study also showed that sacrificial termite-susceptible wood such as rubberwood can successfully monitor the progress of termite activity and attack of test wood samples within the test assembly thus helps in deciding when to terminate the termite test in this case after 4 month exposure.

Full text available from:

Abstract

Boric acid treated mean retention: 1 and 1.1 boric acid equivalent BAE rubberwood Hevea brasiliensis chipboard sheets prepared in a commercial mill-run were sampled off the hot press within a 3 hr 40 min run time of board production. Chipboard samples were cut into slabs of 50x150 long x 8 thick mm along the width of the boards per selected run time interval for the aboveground H2 Hazard Class termite test wood exposed to termite threat protected from leaching designed by Wong 2005 at a Malaysian rainforest site against Coptotermes curvignathus. The chosen BAE retention represented minimal dosages where timber species can be protected against subterranean termites. The test methodology was proven highly successful in aggregating C. curvignathus termites into the field test assembly promoting severe degradation on both the susceptible solid rubberwood and untreated chipboard included in the design. Visual ratings and mass loss results clearly demonstrated the high termite resistance of chipboards treated with boric acid at both 1.0 and 1.1 mean BAE reinforcing recent laboratory findings on the same test materials Wong and Grace 2004. There was consistent termite resistance regardless of the sampling time interval hence length of chipboard of board production. The study also showed that sacrificial termite-susceptible wood such as rubberwood can successfully monitor the progress of termite activity and attack of test wood samples within the test assembly thus helps in deciding when to terminate the termite test in this case after 4 month exposure.

[error in script]

Item Type:	Proceedings Paper
AGROVOC Term:	PARTICLE BOARDS
AGROVOC Term:	AERIAL PARTS
AGROVOC Term:	ISOPTERA
AGROVOC Term:	EXPERIMENTATION
AGROVOC Term:	METHODS
AGROVOC Term:	COPTOTERMES
AGROVOC Term:	HEVEA BRASILIENSIS
AGROVOC Term:	BORATES
AGROVOC Term:	WOOD
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:28
URI:	http://webagris.upm.edu.my/id/eprint/16937

Actions (login required)

View Item