Transportation Research Abstracts, Issues 1-25National Research Council, Transportation Research Board., 1931 - Transportation |
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2101 CONSTITUTION AVENUE accidents asphalt asphaltenes average beams bituminous Briquette calcium chloride cement concrete cent chert coarse aggregate compressive strength Concrete Pavement CONSTITUTION AVENUE cost cracks CRUM curing curves cylinders DIRECTOR 2101 CONSTITUTION driver effect emulsion Engineer expansion joint F. H. Jackson feet filler gallon grade grams gravel guard rail high early strength Highway Department HIGHWAY RESEARCH ABSTRACTS Highway Research Board HIGHWAY RESEARCH INFORMATION inch INFORMATION SERVICE ROY intersection investigation laboratory lamps light limestone load maintenance material method miles per hour mixture mortar motor vehicle NATIONAL RESEARCH COUNCIL particles paving portland cement pounds Public Roads ratio RESEARCH ABSTRACTS ISSUED RESEARCH COUNCIL HIGHWAY RESEARCH INFORMATION SERVICE resistance road surface roadway rubber sand showed slabs slag sodium vapor lamps soil specific gravity specimens speed square yard strength cements subgrade temperature traffic truck U. S. Bureau viscosity water-cement ratio wheel