unpaved

adj.

没有铺石砖的，没有铺柏油的；

GEOTEXTILE-REINFORCED UNPAVED ROAD DESIGN
Closure of "Geotextile-Reinforced Unpaved Road Design"
Effect of vehicle characteristics on unpaved road dust emissions
Field Observations on Stabilization of Unpaved Roads with Geosynthetics
Design Method for Geogrid-Reinforced Unpaved Roads. II. Calibration and Applications
Full-scale field tests on geosynthetic reinforced unpaved roads on soft subgrade
Surface runoff and soil erosion on unpaved forest roads from rainfall simulation tests in northeastern Spain
Long-Term Efficiencies of Dust Suppressants to Reduce PM10 Emissions from Unpaved Roads
Runoff generation and sediment production on unpaved roads, footpaths and agricultural land surfaces in northern Thailand
COMPOSITION AND PROCESS OF USING AN ASPHALT EMULSION TO CONVERT AN UNPAVED SURFACE INTO A PAVED SURFACE