EURODICAUTOM:

Document 3


Subject Public Administration - Private Administration - Offices (AD)
(CI)



Definition the carbon residue after incomplete combustion or pyrolysis

Reference Multilingual Glossary on Civil Protection 1990,European Commission/Member States Working Party
(1)
TERM char

Reference Multilingual Glossary on Civil Protection 1990,European Commission/Member States Working Party


Definition produkt erhållen vid pyrolys av trä

Reference Energiordlista.-1984.-(TNC 81)
(1)
TERM träkol

Reference Energiordlista.-1984.-(TNC 81)

Document 3



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Note added at 1 hr 18 mins (2005-01-14 09:50:10 GMT)
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Intumescent fire resistive coatings typically expand approximately 15 to 30 times during a UL 263; Fire Tests of Building Construction and Materials (ASTM E119, NFPA 251, and UBC 7-1) fire test. The more traditional insulating materials typically undergo a slight shrinkage during the fire exposure. In addition, most intumescent coatings generate an ash-like or char layer during their expansion process. As the fire exposure continues, the ash coating erodes exposing the remaining intumescent coating. This expansion process repeats itself several times during the test depending upon the coating thickness. The maintenance of the insulating or char layer during the expansion and the erosion process is much more dependent upon the shape of the structural steel as compared to maintaining the insulating barrier when more conventional materials are used. For example, while the char may adhere well to a wide flange column, the same material may not adequately adhere to and protect rectangular or round steel shapes. Some intumescent coatings require the addition of a reinforcing mesh when applied on specific structural shapes to retain their insulating or char layer.

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