Dallas Expressway Quickly Rehabilitates With Aid of Giant Cold-Milling Machine

by Eugene E. Dallaire, Assoc. Editor; Civil Engineering Magazine, New York, NY 10017,


Serial Information: Civil Engineering—ASCE, 1977, Vol. 47, Issue 12, Pg. 72-73


Document Type: Feature article

Abstract:

The Dallas, Texas Central Expressway, one of the most intensively used roads in the U.S., was plagued by a deteriorating and bumpy surface, and poor skid resistance. The pavement consisted of a 10-in. deep slab of concrete topped with a 1¼-in. thick asphaltic wearing course. State highway engineers had three options for solving the problem: (1)Remove the asphalt course and replace with a new one; (2)patch the holes in the pavement and put down another of asphaltic concrete; and (3)remove the present AC layer and texture the underlying concrete surface. For cost reasons, the engineers opted for the third alternative. Using a CMI Corp. giant cold-milling machine, workers ground off the 1¼-in. AC layer, as well as ¼-in. of underlying concrete. This is believed to be the first time both these operations have been carried out in a single pass of the equipment. The resulting highly textured concrete surface makes for an excellent highly skid-resistant riding surface.



Subject Headings: Equipment and machinery | Highways and roads | Rehabilitation | Asphalt pavements | Asphalt concrete | Concrete pavements | Concrete | Skid resistance | Deterioration | North America | Texas | United States | Dallas

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