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Ultralightweight foamed glass aggregate as MSE wall backfill

Aero Aggregates of North America LLC supplies the aggregate, made from postconsumer recycled glass, for a Rhode Island MSE wall at a freeway interchange.

Features | April 1, 2022 | By: Theresa Andrejack Loux and Archie Filshill

FIGURE 1 Ultralightweight foamed glass aggregate (UL-FGA) MSE backfill in Ramp B at the Route 6/10 Interchange reconstruction project in Rhode Island. Photograph courtesy of Deirdre Paiva/Rhode Island Department of Transportation (RIDOT) Mechanically stabilized earth (MSE) systems are a popular and economical option to construct retaining walls for highways and railways, wingwalls and abutments for […]


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