A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of MMFX 2 Steel Corrosion-Resistant Dowel Bars in Jointed Plain Concrete Pavement
The performance of MMFX 2 steel dowel bars was compared to epoxy-coated steel dowel bars after five years of service in 9-in jointed plain concrete pavement (JPCP). Performance indicators included dowel bar corrosion, pavement smoothness and load transfer efficiency (LTE) at the transverse joints. Cores through dowel bars revealed that no corrosion had occurred on either type of dowel after five years in service. Results of IRI testing at several pavement ages indicated that pavement smoothness was similar for sections constructed with both types of dowels and was average for JPCP in Wisconsin. The LTE of epoxy-coated dowel bar sections (median value of 92 percent) was slightly higher than the median value of 87 percent for MMFX 2 dowel bar sections. However, these values indicate that both types of dowels have provided adequate load transfer for JPCP. Two life cycle cost analysis scenarios using a typical WisDOT rehabilitation schedule and analysis period illustrated that use of MMFX 2 steel dowels would be cost effective if they provided an additional 15 years of initial service for JPCP. Results of this investigation did not suggest that either epoxy-coated steel or MMFX 2 steel dowel bars provide superior performance when used in the construction of JPCP.
Evaluation of MMFX 2 Steel Corrosion-Resistant Dowel Bars in Jointed Plain Concrete Pavement
The performance of MMFX 2 steel dowel bars was compared to epoxy-coated steel dowel bars after five years of service in 9-in jointed plain concrete pavement (JPCP). Performance indicators included dowel bar corrosion, pavement smoothness and load transfer efficiency (LTE) at the transverse joints. Cores through dowel bars revealed that no corrosion had occurred on either type of dowel after five years in service. Results of IRI testing at several pavement ages indicated that pavement smoothness was similar for sections constructed with both types of dowels and was average for JPCP in Wisconsin. The LTE of epoxy-coated dowel bar sections (median value of 92 percent) was slightly higher than the median value of 87 percent for MMFX 2 dowel bar sections. However, these values indicate that both types of dowels have provided adequate load transfer for JPCP. Two life cycle cost analysis scenarios using a typical WisDOT rehabilitation schedule and analysis period illustrated that use of MMFX 2 steel dowels would be cost effective if they provided an additional 15 years of initial service for JPCP. Results of this investigation did not suggest that either epoxy-coated steel or MMFX 2 steel dowel bars provide superior performance when used in the construction of JPCP.
Evaluation of MMFX 2 Steel Corrosion-Resistant Dowel Bars in Jointed Plain Concrete Pavement
I. K. Battaglia (author)
2008
36 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Corrosion & Corrosion Inhibition , Dowels , Concrete pavements , Corrosion resistance , Load transfer , Stainless steels , Construction , Epoxy , Fiber reinforced polymers , Rehabilitation , Wisconsion , Performance evaluation , Micro-composite multistructural formable steel (MMFX) , Dowel bars , Pavement joints
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