Preventing Moisture Damage to Bituminous Materials: Damage inhibitor is abundant in shale oil: Fid-Bau Portal

Preventing Moisture Damage to Bituminous Materials: Damage inhibitor is abundant in shale oil

This citation summarizes a one-page announcement of technology available for utilization. A desired property of bituminous binder materials is resistance to damage from moisture and repeated freeze/thaw cycles. Bituminous binders are widely used with mineral aggregates to construct roads and pavements, to serve as roofing materials and pond liners, and to function in other applications where moisture resistance is needed. Moisture-damage-inhibiting agents are often added to bituminous binders to improve resistance to moisture damage. Recently, a molecular type containing the pyridine moiety was found to be an effective agent. In one laboratory test, samples of a bituminous composition containing pyridine-pretreated aggregate were unaffected by 20 freeze/thaw cycles, compared to the control samples which failed after seven cycles. Even smooth uncrushed stones, such as those recovered from a riverbed, which ordinarily do not bond satisfactorily to a bituminous binder, bond well when a pyridine moiety is present. ...FOR ADDITIONAL INFORMATION: The patent document on which this technical note is based is U.S. Patent 4,325,738, which is available from: Commissioner of Patents Washington, DC 20231 for $1. For licensing information, contact: Office of Assistant General Counsel for Patents, U.S. Department of Energy, Washington, DC 20585.