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Open AccessArticle

Evaluation of Compatibility between Beetle-Killed Lodgepole Pine (Pinus Contorta var. Latifolia) Wood with Portland Cement

1
Ecosystem Science and Management Program, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia, V2N 4Z9, Canada
2
Department of Physics, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia, V2N 4Z9, Canada
3
Chemistry, Environmental Science and Environmental Engineering Programs, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia, V2N 4Z9, Canada
*
Author to whom correspondence should be addressed.
Materials 2010, 3(12), 5311-5319; https://doi.org/10.3390/ma3125311
Received: 30 November 2010 / Revised: 15 December 2010 / Accepted: 16 December 2010 / Published: 17 December 2010
(This article belongs to the Special Issue Innovative Materials in Civil Constructions)
The compatibility of wood from mountain pine beetle (Dendroctonus ponderosa) killed lodgepole pine (Pinus contorta var. latifolia) with Portland cement was investigated based on time-since-death as a quantitative estimator, and the presence of blue-stained sapwood, brown rot, or white rot as qualitative indicators. The exothermic behavior of cement hydration, maximum heat rate, time to reach this maximum, and total heat released within a 3.5–24 h interval were used for defining a new wood-cement compatibility index (CX). CX was developed and accounted for large discrepancies in assessing wood-cement compatibility compared to the previous methods. Using CX, no significant differences were found between fresh or beetle-killed wood with respect to the suitability for cement; except for the white rot samples which reached or exceeded the levels of incompatibility. An outstanding physicochemical behavior was also found for blue-stained sapwood and cement, producing significantly higher compatibility indices. View Full-Text
Keywords: compatibility index; hydration; lodgepole pine; Portland cement; wood compatibility index; hydration; lodgepole pine; Portland cement; wood
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Pasca, S.A.; Hartley, I.D.; Reid, M.E.; Thring, R.W. Evaluation of Compatibility between Beetle-Killed Lodgepole Pine (Pinus Contorta var. Latifolia) Wood with Portland Cement. Materials 2010, 3, 5311-5319.

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