An inclination incising technique for the preservative treatment of refractory timbers

IRG/WP 3664

Y Nakamura, K Nishimoto

An inclination incising technique for preservative treatment of refractory timbers was examined by changing cutting angle to the longitudinal direction of test specimen and by using different types of knife edge. Incised wood were impregnated locally into incisions with CCA solution by the specified local pressure process. Width and length of penetration areas of CCA solution were measured on longitudinal flatwise sections obtained at the depths of 2, 5, 8 and 10 mm from the specimen surface. Penetration area of the solution was expanded in the incised refractory timbers, varying with the shape of knife edge and the inclined angle. The best penetration was attained by use of circular-shaped sharp edge with the same thickness form the top to the base, and at 60-90° cutting angles. Although the strength reduction by incising and practical processing technique should be investigated, inclination incising technique is considered promising for the pressure treatment of refractory timbers.


Keywords: CCA; INCISING; INCLINATION INCISING; JAPAN; KNIFE EDGES; PENETRATION; PRESSURE IMPREGNATION; REFRACTORY TIMBERS

Conference: 91-05-20/24 Kyoto, Japan


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