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Project Details

Title:Ultra-accelerated Method to Evaluate Recycled Concrete Aggregate in New Construction
Principal Investigators:Jennifer Tanner
University:University of Wyoming
Grant #:69A3551747108 (FAST Act)
Project #:MPC-539
RH Display ID:15692
Keywords:airport runways, alkali silica reactions, concrete aggregates, concrete construction, durability, recycled materials


The Rocky Mountain Region has experienced considerable difficulty due to the presence of alkali-silica reaction (ASR) in concrete construction. Several sources of aggregate that have produced poorly performing concrete have been removed from service. As an example, DIA runways were damaged by ASR and the repair cost exceeded 30 million. On a positive note, Wyoming Department of Transportation (WYDOT) was successful in using RCA on Interstate 1-80 and with limited ASR damage. In this portion of the road, WYDOT observed a 30 year service life. This performance, coupled with data from a previous study help confirm that using RCA combined with natural aggregates produces durable long-term concrete that will benefit the transportation network in this region. This study intends to provide experimental data that permits RCA to be used in applications beyond base fill for roads.

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