UNITED STATES - 09-21-2020: Edward Hoppe, PhD, PE from the Virginia Transportation Research Council in Charlottesville talks with VDOT crews about the
UNITED STATES - 09-21-2020: Edward Hoppe, PhD, PE from the Virginia Transportation Research Council in Charlottesville talks with VDOT crews about the freshly laid DSA (Driving Surface Aggregate) that is being tested on Old Waterford Road. This Virginia version of the surface aggregate developed by Dr. Hoppe) uses recycled asphalt millings, ground into a powder, as a binder to help the roads from washing out during heavy rains and will in theory eliminate the need for surface gravel that just washes off the road and into the ditches. Gravel is also the chief source of heavy dust during dry spells as it breaks down with traffic driving over it. (Photo By Douglas Graham/WLP)
Size: 4928px × 3280px
Photo credit: © William Graham / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 13-year-, 16-year-, 1700s, 1731, 1748, 1764, 1786, aggregate, americas, area, associates, association, bed, blew, blue, cabbin, cabin, capt., carter, character, committee, connecting, county, countys, dirt, driving, dsa, early, edward, established, fairfax, fairfax’, farmland, ferry, gap, george, gravel, heri, heritage, historic, hites, important, indian, land, landscape, lane, leesburg, legislature, lord, loudoun, mosby, mountains, moving, northern, patent, paving, populations, preserved, properties, reestablished, residents, revolutionary, ridge, river, road, roads, roads., robert, route, routes, rural, save, settlers, shenandoah, significant, snickers’, son, squatter’, sunken, surface, survey, thoroughfare, trade, trail, travel, turnpike, valley, virginia, wagon, war, washington, waterford, west, western, william, williams, “king”
