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What is FSB?

Green Mix - Foam Stabilized Base (FSB) is now available in the Washington, DC metropolitan area. Located in Forestville, MD, GRR Engineering is producing high quality recycled asphalt for use in parking lots and roads.

Our facility is the very first plant of its type in the US. FSB is currently used internationally on large and small projects. We are working hard to help State Road agencies get the data they need to specify green mix for use in US roads.

ACEC 2015 outstanding project award presented to GRR who's projected methodology for pavement application using Foam Stabilizing Base.


The pavement designers appreciate it because it gets to those deep failures, fixing the entire pavement structure, opposed to putting a ‘band-aid’ on top and continually
maintaining it.

Chaz B. Weaver, P.E. VDOT District Materials Engineer

Using these pavement recycling methods has the potential to revolutionize how we
rehabilitate our aging roads, both in Virginia and nationally.

Bob McDonnell Virginia Governor
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