A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High Performance Concrete Pavements: Alternative Dowel Bars for Load Transfer in Jointed Concrete Pavements
Load transfer is the mechanism through which wheel loads are transferred at a joint from one slab to the next and is an important factor influencing the performance of PCC pavements. In jointed PCC pavements, transverse joint load transfer is provided in two ways: by the aggregate interlock of the abutting joint faces and by mechanical load transfer devices such as round steel dowel bars. Additionally, load transfer is also provided by the underlying foundation support (base/subbase/subgrade). Presently, more and more agencies are requiring the use of steel dowel bars for most medium- and high-traffic facilities because of their proven ability to prevent or reduce transverse joint faulting. Unfortunately, steel dowel bars are susceptible to corrosion, which can limit their long-term effectiveness and may even contribute to the development of other distresses. Consequently, over the years highway agencies have experimented with a variety of dowel bar coatings to prevent or reduce the rate of corrosion development, and the use of epoxy-coated steel dowel bars has become the industry standard. However, even epoxy-coated steel dowel bars have been shown to be susceptible to corrosion, and because of those corrosion concerns, there has been a strong interest in the use of alternative dowel bars for transverse joint load transfer in PCC pavements.
High Performance Concrete Pavements: Alternative Dowel Bars for Load Transfer in Jointed Concrete Pavements
Load transfer is the mechanism through which wheel loads are transferred at a joint from one slab to the next and is an important factor influencing the performance of PCC pavements. In jointed PCC pavements, transverse joint load transfer is provided in two ways: by the aggregate interlock of the abutting joint faces and by mechanical load transfer devices such as round steel dowel bars. Additionally, load transfer is also provided by the underlying foundation support (base/subbase/subgrade). Presently, more and more agencies are requiring the use of steel dowel bars for most medium- and high-traffic facilities because of their proven ability to prevent or reduce transverse joint faulting. Unfortunately, steel dowel bars are susceptible to corrosion, which can limit their long-term effectiveness and may even contribute to the development of other distresses. Consequently, over the years highway agencies have experimented with a variety of dowel bar coatings to prevent or reduce the rate of corrosion development, and the use of epoxy-coated steel dowel bars has become the industry standard. However, even epoxy-coated steel dowel bars have been shown to be susceptible to corrosion, and because of those corrosion concerns, there has been a strong interest in the use of alternative dowel bars for transverse joint load transfer in PCC pavements.
High Performance Concrete Pavements: Alternative Dowel Bars for Load Transfer in Jointed Concrete Pavements
K. D. Smith (author)
2002
38 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Concrete pavements , Dowels , Load transfer , Corrosions , Concrete slabs , Epoxy , Fiber reinforced polymers , Stainless steels , Performance evaluation , Construction , Deflection , Mechanical properties , Composite materials , Plastics , Hollow tubes , Pavement joints , Dowel bars
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