Expansion Joints Using Elastomeric Concrete Nosing Materials--Texas experience


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Title: Expansion Joints Using Elastomeric Concrete Nosing Materials--Texas experience

Author(s): R. Price

Publication: Special Publication

Volume: 94


Appears on pages(s): 747-764

Keywords: bonding; bridge decks; concrete pavements; control joints; elastic properties; epoxy resins; expansion; impact strength; installing; specifications; urethanes; Construction

Date: 7/1/1987

The Texas State Department of Highways and Public Transportation has developed through laboratory testing a material specification for elastomeric concrete and for use as expansion joint nosing material. The elastomer is specified by physical properties such as tensile stress, elongation, bond strength, and compressive resilience. Physical properties are determined after short-term curing and long-term oven aging. To date, approximately 4000 ft (1219 m) of joint has been placed according to this specification. Although the oldest installation is only one year old, the performance of the joints has been excellent. An experimental installation, scheduled for August 1986, includes four different elastomeric concretes in approximately 1500 ft (457 m) of joint. The performance of these joints will be correlated with physical property testing and used to improve the existing specification.