Filling the Cracks

by Virginia Fairweather, Editor; Civil Engineering, 345 E. 47th St., New York, NY 10017,

Serial Information: Civil Engineering—ASCE, 1986, Vol. 56, Issue 10, Pg. 38-41

Document Type: Feature article

Abstract: Engineers, highway officials, and manufacturers are working together to develop new products to rehabilitate cracked bridge decks. Polymer concrete overlays are among the many remedies being examined. There are three basic types of resins used in these new products: polyesters; epoxies; and methyl methacrylates. Modified methacrylates and high molecular methyl methacrylates are versions of the last category. Properties, advantages, and disadvantages of each type are outlined. Recent case histories and pilot projects in California, Washington, Virginia and several other states are described. Application techniques vary somewhat and opinions on the advantages of different methods are also offered. Research in two newer types of overlays, a conductive polymer for cathodic protection and a deep impregnation technique, are also mentioned.

Subject Headings: Bridge decks | Case studies | Cracking | Pavement overlays | Rehabilitation |

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