Design of a post-tensioned prestressed concrete pavement, construction guidelines, and monitoring plan.
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2003-08-01
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Alternative Title:Research project title : further development of post-tensioned prestressed concrete pavements in Texas.
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Abstract:Prestressed Concrete Pavement (PCP) has been around for almost 60 years. Its application started in Europe in
the 1940s, and since then it has been applied with fair success in other countries, including the United States.
Domestic application of this technology has been limited for different reasons, mainly due to the lack of welldefined
or standard design and construction procedures.
In the United States PCPs have been constructed in Pennsylvania, Mississippi, Arizona, Illinois, and Texas. In
1985 the Center for Transportation Research (CTR) at the University of Texas at Austin designed and constructed
a one-mile PCP section that, after more than 17 years of service under heavy traffic loads, is still in very good
condition. Although the overall performance of the PCP constructed in Texas has surpassed expectations, there
are still design and construction flaws that need to be corrected.
In 1999 the Texas Department of Transportation (TxDOT) funded a research project that required the design and
construction of a new, improved PCP section in Texas. The work presented herein attempts to provide a design
methodology and preliminary construction guidelines and specifications for a generic PCP. Additionally, the
study implements the design procedure for a PCP to be constructed on IH 35 in Hillsboro, Texas. It is believed
that this investigation will provide valuable information and a positive step towards the standardization of the PCP
application.
The results from the study show that PCP construction is very promising and provides long-term low-maintenance
pavements at a competitive life-cycle cost. During the last few years there has been an increased use of this
paving technology, and it is hoped that the outstanding performance of several previous projects and lessons
learned from the not-so-successful projects will lead to new improvements to PCP methods of design and
construction that will produce high-performance pavements.
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