clean motor oil / gray cement/ beach sand/ chert rock / white cement/ brown sand/ basalt rock / gray cement/ beach sand/ plagioclase rock / white cement/ riverbed sand/ basalt rock / white cement/ riverbed sand/ plagioclase rock / white cement/ beach sand/ granite rock / gray cement/ riverbed sand/ granite rock / gray cement/ brown sand/ granite rock / gray cement/ basalt sand/ chert rock / white cement/ brown sand/ granite rock / cement concrete / cement concretes / gray cement/ brown sand/ plagioclase rock / white cement/ riverbed sand/ granite rock / white cement/ beach sand/ basalt rock / white cement/ beach sand/ chert rock / gray cement/ basalt sand/ granite rock / gray-cement concretes / white cement / white cement/ basalt sand/ granite rock / white cement/ basalt sand/ chert rock / white cement/ basalt sand/ plagioclase rock / white-cement / gray cement/ basalt sand/ plagioclase rock / white-cement concretes / gray cement/ brown sand/ basalt rock / cement / gray cement / white cement/ brown sand/ plagioclase rock / cement albedo / rubber / gray cement/ beach sand/ basalt rock / gray cement/ riverbed sand/ basalt rock / gray cement/ riverbed sand/ plagioclase rock / white cement/ basalt sand/ basalt rock / oil / gray-cement / white cement/ brown sand/ chert rock / white cement/ riverbed sand/ chert rock / gray cement/ riverbed sand/ chert rock / white cement/ beach sand/ plagioclase rock / gray cement/ brown sand/ chert rock / gray cement/ beach sand/ granite rock / not include soiling by rubber / /
Soiled Surfaces. Pavements can be soiled by agents including dirt, oil, rubber, and carbon. Soiling was simulated by dipping the finished surface of quarter-disk IV (“soiled” surface SO) in clean motor oil, rubbing t