SEDL / STP / STP1241-EB / STP18197S

Physical Properties of Tall Oil Pitch Modified Asphalt Cement Binders

Johnson, RA
President and research and quality assurance manager, Infratech Polymers, Inc., British Columbia,

Juristovski, AG
President and research and quality assurance manager, Infratech Polymers, Inc., British Columbia,

Pages: 12    Published: Jan 1995

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Abstract

In recent years, significant advances in asphalt modifications have been achieved, particularly in the field of polymer modified asphalt cement binders. Concurrently, environmental concerns and recycling processes are becoming a part of our everyday life. Tall oil pitch (TOP) is a by-product of the kraft process in the pulp and paper industry. The company's research and development team has conducted development programs and intensive testing of physical properties of tall oil pitch modified asphalt cement binders. Obtained results show that tall oil pitch strongly influences the rheological properties of asphalt cement. These blends have higher penetration, lower viscosity, and are more temperature susceptible than original asphalt cement. Blends also have excellent wetting properties of aggregate.