Chicago : Engineering and Contracting Pub. Co. · leaf 955
omers with-out charge an im-proved apparatus formixing and cooking El-Oso which entirely overcomes thedefects due to improperly preparing other asphalts. The old style plant consists of a sand dryer, asphalt melt-ing kettles and a pug mill for mixing. The sand dryer is a drum built in a furnace… … w tin The fluid condition of the asphalt in the kettles varieswith the temperature, and since it has been demonstratedthat a temperature of 700 degrees Fahr. will destroy thecementing properties of any asphalt, the asphalt is frequent-ly carbonized, with the result that the pavement is hard,brittle…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
