SEDL / STP / STP1240-EB / STP14138S

Abrasive Blast Material Utilization in Asphalt Roadbed Material

Means, JL
Department manager and administrative coordinator, Battelle Memorial Institute (BMI), Columbus, OH

Nehring, KW
Department manager and administrative coordinator, Battelle Memorial Institute (BMI), Columbus, OH

Heath, JC
Site analysis closure team leader, Naval Facilities Engineering Service Center, Port Hueneme, CA

Pages: 15    Published: Jan 1996

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Abstract

The State of California has promulgated rules on “California-only” hazardous wastes that offer the potential for some of these wastes to be recycled or reused. Abrasive blast material (ABM) from military and commercial operations such as sandblasting may fall into the category of waste that can be reused. Experiments were conducted on spent sandblasting grit to determine whether the grit could be incorporated into asphalt concrete for use as roadbed material, and a test roadbed was laid to evaluate the long-term stability of the metals found in the grit. Incorporation of the ABM in asphalt helps reduce the mobility of metal contaminants making the material suitable for reuse. The results of the initial characterization, treatability testing, and follow-up measurements of core samples taken from the test roadbed are presented to show that the use of abrasive blast material in asphalt roadbed material is a viable option under the proposed California regulatory standards.