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Alternative Title:Bituminous Concrete Pavement Recycling - Interim Report Demonstration project No. 39;Recycling Asphalt Pavements: North Brunswick, New Jersey;
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Edition:Interim Report Construction Phase FY 80
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Abstract:This report describes the design, testing and production of a bituminous concrete mixture using the IIMinnesota Heat-Transfer Method" of recycling salvaged bituminous material through a conventional asphalt concrete plant. The highly successful project consisted of salvaging approximately 14,000 tons of a milled surface course from Route US 1 and placing it as 27,000 tons of recycled mixture on the shoulder of Route US 130. The salvaged No. 5 FABC Mix was converted to a No. 4 MABC Mix with no significant problems. The addition of an AC-20 asphalt cement changed the lower penetration values of the milled material more dramatically than those having a penetration range of 34-43. In cases where there was little change in penetration, the effect of the AC-20 on the recovered recycled asphalt was shown by a 37% decrease in viscosity and a 127% increase in ductility. Some material was reje~ted for both high and low t~mperatures when production was erratic, however, a unlform temperature was malntalned on sustalned runs. There was no problem ln placing the pavement. The energy savings of the recycled mixture over a conventional mix was 3.5 billion BTU or an equivalency of 27,964 gallons of gasoline. The raw material savings amounted to 704 tons (171,707 gallons) of asphalt cement, 12,753 tons of stone aggregate and a dollar savings of $50,346 based on bid prices for a conventional mix
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