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    Author(s): E. L. Schaffer
    Date: 1968
    Source: (Research note FPL ; 0175):13 p.
    Publication Series: Research Note (RN)
    Station: Forest Products Laboratory
    PDF: View PDF  (1.3 MB)


    A relatively simple test procedure was developed to evaluate the behavior of various adhesives near fire-exposed surfaces in laminated constructions. A number of sections cut from laminated blocks were exposed to fire on one surface. After this exposure, the sections were transversely cut, and the gluelines were examined for separation depth. In addition, the cool specimens were broken along the glue joints so as to be able to determine the residual bonded area. An equation incorporating both the separation depth and the residual bonded area at the joints was utilized to obtain a bdegradation indexc on which adhesive behavior near fire-exposed surfaces can be quantitatively based. This index was used to make a preliminary grouping of the behavior under fire of six types of adhesives in laminated sections of Douglas-fir and southern pine.

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    Schaffer, E. L. 1968. A simplified test for adhesive behavior in wood sections exposed to fire. (Research note FPL ; 0175):13 p.


    Testing, Adhesives, Fire, Temperature, Residual bonded area, Douglas-fir, Southern pine., Bonds, Fire exposure, Thermal gradient, Charred wood

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