CONCRETE AS A SUBSTITUTE FOR GRANITE CLADDING ATTAINS HIGH PERFORMANCE CONCRETE CONSIDERATION AS THE RESULT OF EXCEPTIONAL MATERIALS AND PRODUCTION CONTROL

摘要

This paper deals with the substitution of high-performance-concrete for granite cladding of prestressed concrete sheet piles. An extensive review of research pertaining to concrete durability in marine environments was conducted. The conclusion was that concrete of a specific quality would perform better than granite cladding in the long term durability of prestressed concrete sheet piles. Specially selected concrete materials, verification of the mixture proportions, compressive strength and durability characteristics complied with New Jersey DOT specifications. Most of the performance characteristics found in the 1996 FHWA, HPC Performance Guide were adopted by NJDOT by change order. The extended parameters describe a new HPC grade. The project could not be undertaken without a thoroughly comprehensive QA/QC program.