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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Concrete Pavement Joints, Measurement of Deflection and Slab Rocking, Development of Load Transfer Device
Author(s): Reinard W. Brandley
Publication: Special Publication
Appears on pages(s): 719-734
Keywords: concrete pavements; concrete slabs; deflection; failure; joints (junctions); loads (forces); load tests (structural); load transfer; measurement; resurfacing; runways.
Abstract:The only runway at San Diego International Airport, SanDiego, California, is of World War II vintage, consisting of Portland Cement Concrete (PCC) pavement placed on a dredged fill. Failure of this pavement under load has progressed to a point where rehabilitation and/or strengthening is necessary. Early observations indicated that poor performance of the joints in the Portland Cement Concrete pavement was largely responsible for the failures which had occurred. There was evidence of large total deflection of the joint and of large movement of one slab with respect to the adjoining slab (slab rocking) under heavy loading conditions. A new deflection beam was developed, and total deflection and slab rockinq under load was measured for all critical joints on the runway pavement. All joints which showed excessive total deflection were grouted, and all joints which showed excessive slab rocking were treated with a new design of load transfer device. An 8-in. bituminous surface course was placed as a strengthening overlay. Joints were sawed and sealed in the bituminous surface course to match the PCC joints to control reflective cracking. Tests conducted subsequent to construction show that the rehabilitated pavement joints have performed well.
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