United States Department of Transportation
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Engineering Economy and Energy Considerations: Design and Construction of Lightweight Asphalt Concrete Mixtures
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1981-06-01
[PDF-2.05 MB]
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Abstract:Demands for high polish value aggregates continue to increase as State and Federal Agencies work together to improve driving safety by upgrading the desirable surface properties of our nation's highways. Lightweight aggregates produced from clays and shales by the rotary kiln process are suitable high polish aggregates and have been used extensively on Texas highways since 1961. Lightweight aggregates were initially used as cover stone for seal coats and surface treatments while their utilization in asphalt concrete hot mixes dates to 1965. Several thousand lane miles of lightweight hot mixes have been placed in service on Texas highways.
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