FHWA Resource Center
STRUCTURES TEAM
Status of each State's
implementation of PCEF Bulb T's and Implementation of HPC
Status of Implementation of PCEF Bulb T Shapes
Maryland - Unsure
Implementation
of HPC
Woodrow Wilson Bridge, with fibers. Concerted effort to increase number
of HPC bridges. Would like to see HPC used for prestressed beams
Status
of Implementation of PCEF Bulb T Shapes
Delaware - Looking for first application
Implementation
of HPC
2 bridges constructed with HPC and one superstructure. Microsilica used,
4" thickness. No early shrinkage cracks yet. Permeability of mixes
was less than 1000 coulombs
Status
of Implementation of PCEF Bulb T Shapes
Virginia - All beams are PCEF Bulb T's. Planning on doing one
93" beam.
Implementation
of HPC
Extensive use of HPC for bridges and decks. Has done some 10000 psi bridges
and some light weight.
Status
of Implementation of PCEF Bulb T Shapes
Pennsylvania - None to date. Concerned with redecking - ie. thin top
slabs may be an issue. Currently reviewing continuity details
Implementation
of HPC
HPC use on decks is increasing. Has standard specification criteria. Uses
rate of strength gain and a maximum strength of 6000 psi. Recently eliminated
shrinkage criteria
Status
of Implementation of PCEF Bulb T Shapes
West Virginia - None to date. Producers are located primarily in Kentucky.
Evaluating future use.
Status
of Implementation of PCEF Bulb T Shapes
North Carolina - None to date. Likes having producers submit to them
as an option. Has used PCI Bulb T's
Implementation
of HPC
Minimizes pozzolanic material volume for certain Districts in deck mixes.
US-64, a 5 mile long bridge with HPC and a 100 year service life will be
developed using a corrosion model. Each element will be based on a chloride
concentration estimate. Air content not specified.
Status
of Implementation of PCEF Bulb T Shapes
District of Columbia - Unknown
Implementation
of HPC
Used on approximately 60% of their structures using 4500 psi concrete and
a maximum permeability of 1500 coulombs. The North Capitol Bridge will be
an HPC design
Status
of Implementation of PCEF Bulb T Shapes
New Jersey - Unknown
Implementation
of HPC
HPC will be used on their Long Port project for piles, pier caps and girders.
Their Victory Bridge project will use HPC for segment box columns and footings.
A full battery of qualification tests will be run, including creep, shrinkage,
permeability and a minimum of 8000 psi strength.
Status
of Implementation of PCEF Bulb T Shapes
New York - Uses New England Bulb T shapes. Allows substitution of
PCEF shapes without calculations. In the process of developing new standards.
Implementation
of HPC
Uses HPC on decks the last 10 years. The main problem they have experienced
is with deck cracking, even with 14 day wet cure. Have used fibers recently,
but results have not been quantified. Next year, all decks will be HPC.
Bridge beams will use 10000 psi concrete.
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