The penetration characteristics of CCA preservatives in wood-radial/tangential, processes and species effects

Jansen, A.E.; Pizzi, A.; Conradie, W. E.

doi:10.1007/bf02612121

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Methodology Of Charring Tests1

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1986

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“…Within each laminate, two thermocouples were placed at each of four distances from the fire-exposed surface (13,25,38, and 51 mm), thus we had two replicates for each location. For each specimen, three sets of data were produced--one for each laminate.…”

Section: Methodology Of Charring Testsmentioning

confidence: 99%

Charring rate of wood for ASTM E 119 exposure

1992

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Analytical methods that predict the endurance of structural wood members in a fire are based on the reduction of the cross section of the member caused by wood being charred. To define the charring rate in terms of more fundamental properties, empirical models were established. Eight species were tested for charring rates and material properties. Regression analysis was used to develop the models. The predictor variables for the initial factorial design included density, moisture content, treatability, and hardwood-softwood classification. The addition of char contraction simplified the model and reduced the predictor variables to the char contraction factor, density, and moisture content. Our results show the importance of surface recession and moisture content to wood charring.

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Section: Methodology Of Charring Testsmentioning

confidence: 99%