RESULTS OF RESEARCHING THE RATE OF CARBONIZATION OF FRAGMENTS OF WOODEN BEAMS WITH TWO TYPES OF CLADDING

Abstract

this article presents the obtained results of the charring depth of wooden beams during fire tests at a standard temperature regime with fireproof lining with OSB plates and fireproof plywood. The obtained experimental results of temperature distributions in the cross-section of wooden beam fragments, which are the basis of the obtained dependences of the charring rate on the time of action of the heat flow, were approximated in the form of polynomials.

The conducted studies determine the patterns of temperature changes in the inner layers of fragments of wooden beams lined with fire-resistant plywood and OSB plates, which depends on the time of their exposure according to the standard fire temperature regime. In addition, the regularities of changes in the lateral and end thickness of the charred layer, the corresponding rates of charring of fragments of wooden beams covered with fire-resistant plywood and OSB plates, depending on the time of exposure at a standard temperature regime, were determined.