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Title: Prestressed concrete pavements. Volume II, Design and construction procedures for civil airports
Authors: United States. Federal Aviation Administration. Systems Research and Development Service.
Odom, Eugene C.
Carlton, Paul F.
Keywords: Construction procedures
Design procedures
Runway pavements
Load-stress relationships
Prestressed concrete pavements
Publisher: Soils and Pavements Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Technical Report
Abstract: This volume of this report recommends practices and procedures for design and construction of prestressed concrete pavements for civil airports. Volume I of the report describes and presents an analysis of the instrumentation and load tests of a prestressed concrete test road. For the design procedure, the basic load-stress relationships were developed from small-scale model tests employing static loadings. Stresses computed from Westergaard's theory for elastic behavior were adjusted by moment correction factors to reflect the redistribution of moments resulting from partial hinges that develop under the load. Effects of repetitive moving loads were examined both in small-scale models and in full-scale prototype test pavements. The design procedure permits interrelating magnitude of loading, load repetitions, flexural strength, subgrade conditions, pavement thicknesses, slab dimensions, and magnitude of prestress. Consideration also is given to the effects of elastic shortening, creep, and shrinkage of concrete, relaxation in steel tendons, anchorage systems, tendon friction, subgrade restraint, and temperature changes. Construction procedures and alternatives are examined based on a study of prototype test pavements and operational prestressed facilities constructed in this country and abroad. Recommendations a:re based on assessments of the relative merits of prestressing with and without tendons, pretensioning versus posttensioning, types of stressing tendons and conduits, bonded versus nonbonded tendons, expansion joints and joint seals, and subgrade friction-reducing layers.
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