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http://dx.doi.org/10.5345/JKIC.2011.04.2.162

Flame Resistance and Durability of Compressed Structural Wood through Microwave Heat Drying Method  

Lim, Nam-Gi (Department of Architectural Engineering, Tongmyong University)
Publication Information
Journal of the Korea Institute of Building Construction / v.11, no.2, 2011 , pp. 162-170 More about this Journal
Abstract
As the result of implementing a treated material test and durability test after quickly drying S.P.F. species, a type of softwood structural material, within a short period time, soaking it in liquid phosphate flame proof agent for an hour, microwave heating it, and compressing it from 3.8cm to 1cm, when setting the appropriate heating time of microwave heating at 7 minutes at 5kW, it is observed that it satisfies the target water content (4~5%). It is shown that in a water content measurement of the wood that is compressed after being softened by soaking in the flame proof agent, drying and heating at 3kW for 9 minutes, all specimens satisfied 12~14%, the appropriate water content for exterior wood. Also, it is shown that in terms of the flame performance obtained through a flame resistance treatment of the compressed wood and a treated material test, the specimen soaked in flame proof agent for 30 minutes was the most excellent, and that the performance test result of the compressed wood in all areas, such as nail withdrawal resistance, compression, bending strength, and shearing strength, were all improved in their mechanical features to twice to three times better performances.
Keywords
Flame Resistant Wood; Compressed Wood; Microwave; Structural Wood;
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