search  homepage  organisation  know how  online forum  Links  registration  Password forgotten? partner login partner ID    password  about fmswiss.ch  FAQ & help tool  goals  conditions  email   lexicon/glossary     search :       2011 entries  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z   Bitumen   The generic term for a semisolid mixture of complex hydrocarbons derived from petroleum or coal after distillation. In the roofing industry, there are two basic bitumens: asphalt and coal-tar pitch. Before application, they are either (1) heated to a liquid state, (2) dissolved in a solvent, or (3) emulsified.