Now showing items 1-20 of 67

    • Research on Design for Prevention of Ditch Erosion on Virginia Highways 

      Diplas, Panayiotis; Duncan, J. Michael; J.K. Mithcell; J. Coffey; C. Smith; S. Stallings (Virginia Center for Transportation Innovation and Research, 1999-12-01), FHWA/VTRC 00-CR2
      Roadside ditch erosion has been problematic on Virginia highways. VDOT, through the Virginia Transportation Research Council, requested that roadside ditch erosion be investigated by means of a research project. Virginia ...
    • Field performance of epoxy-coated reinforcing steel in Virginia bridge decks 

      Wioleta A. Pyc; Weyers, Richard E.; Ryan M. Weyers; Mokarem, David W.; Jerzy Zemajtis; Sprinkel, Michael M.; Dillard, John G. (Virginia Center for Transportation Innovation and Research, 2000-02-01), VTRC 00-R16
      In this study, the corrosion protection performance of epoxy-coated reinforcing steel (ECR) was evaluated using approximately 250 concrete cores from 18 bridge decks in Virginia. The decks were 2 to 20 years old at the ...
    • Erosion Protection for Soil Slopes Along Virginia's Highways 

      Jessee A. Scarborough; Filz, George M.; James K. Mitchell; Thomas L. Brandon (Virginia Center for Transportation Innovation and Research, 2000-10-01), VTRC 01-CR3
      A survey of the state of practice for designing slope erosion control measures within VDOT's nine districts has been conducted. On the basis of the survey, it is clear that there are no specific design procedures currently ...
    • Investigation of the Resistance of Pile Caps and Integral Abutments to Lateral Loading 

      Robert L. Mokwa; Duncan, J. Michael (Virginia Center for Transportation Innovation and Research, 2002-02-01), FHWA/VTRC 00-CR4
      This research provides a means of assessing and quantifying many important aspects of pile group and pile cap behavior under lateral loads. The program of work performed in this study includes developing a full-scale field ...
    • Classification of longitudinal welds in an aluminum bridge deck 

      Cousins, Thomas E.; Richard F. Hezel II; Jose P. Gomez (Virginia Center for Transportation Innovation and Research, 2002-02-01), VTRC 00-CR5
      An aluminum bridge deck (called ALUMADECK) has been developed by Reynolds Metal Company and is made of extruded aluminum sections welded together at the sides to form a bridge deck. The longitudinal welds used to connect ...
    • Experimental and Analytical Investigations of Piles and Abutments of Integral Bridges 

      Arsoy, Sami; Richard M. Barker; Duncan, J. Michael (Virginia Center for Transportation Innovation and Research, 2002-03-01), FHWA/VTRC 02-CR6
      This research investigated, through experimental and analytical studies, the complex interactions that take place between the structural components of an integral bridge and the adjoining soil. The ability of piles and ...
    • Glass fiber reinforced polymer bars as top mat reinforcement for bridge decks 

      J.M. DeFreese; Roberts-Wollmann, Carin L. (Virginia Center for Transportation Innovation and Research, 2002-09-01), VTRC 03-CR6
      The objectives of this research were to characterize the material and bond properties of three commercially available GFRP (glass fiber reinforced polymer) reinforcing bars, and evaluate the effects of the material properties ...
    • Evaluation of models for predicting (total) creep of prestressed concrete mixtures 

      Meyerson, Richard M.; Weyers, Richard E.; Mokarem, David W.; D. Stephen Lane (Virginia Center for Transportation Innovation and Research, 2002-09-01), VTRC 03-CR5
      Concrete experiences volume changes throughout its service life. When loaded, concrete experiences an instantaneous recoverable elastic deformation and a slow inelastic deformation called creep. Creep of concrete is composed ...
    • High-speed texture measurement of pavements 

      McGhee, Kevin K.; Flintsch, Gerardo W. (Virginia Center for Transportation Innovation and Research, 2003-02-01), VTRC 03-R9
      This study was conducted to validate high-speed texture measuring equipment for use in highway applications. The evaluation included two high-speed systems and a new static referencing device. Tests were conducted on 22 ...
    • Investigation of Transfer Length, Development Length, Flexural Strength, and Prestress Losses in Lightweight Prestressed Concrete Girder 

      Cousins, Thomas E.; Adil Nassar (Virginia Center for Transportation Innovation and Research, 2003-04-01), FHWA/VTRC 03-CR20
      Encouraged by the performance of high performance normal weight composite girders, the Virginia Department of Transportation has sought to exploit the use of high performance lightweight composite concrete (HPLWC) girders ...
    • Using high-speed texture measurements to improve the uniformity of hot-mix asphalt 

      McGhee, Kevin K.; Flintsch, Gerardo W.; de León Izeppi, Edgar (Virginia Center for Transportation Innovation and Research, 2003-05-01), VTRC 03-R12
      This study introduces Virginia's efforts to apply high-speed texture measurement as a tool to improve the uniformity of hot-mix asphalt (HMA) pavements. Three approaches for detecting and quantifying HMA segregation through ...
    • Factors Affecting Strength Gain in Lime-Cement Columns and Development of a Laboratory Testing Procedure 

      Jesse R. Jacobson; Filz, George M.; James K. Mitchell (Virginia Center for Transportation Innovation and Research, 2003-06-01), FHWA/VTRC 03-CR16
      Lime-cement columns were constructed to improve soft ground as part of a test embankment program at the I-95/Route interchange in Alexandria, Virginia. Two different commercial laboratories performed tests on treated soil, ...
    • Proof Testing a Bridge Deck Design with Glass Fiber Reinforced Polymer Bars as Top Mat of Reinforcement 

      Jason K. Cawrse; Roberts-Wollmann, Carin L. (Virginia Center for Transportation Innovation and Research, 2003-06-01), VTRC 03-R15
      The primary objective of this project was to test a full-scale prototype of a bridge deck design containing glass fiber reinforced polymer (GFRP) bars as the top mat of reinforcement. The test deck mimics the design of the ...
    • Development of concrete shrinkage performance specifications 

      Mokarem, David W.; Meyerson, Richard M.; Weyers, Richard E. (Virginia Center for Transportation Innovation and Research, 2003-08-01), VTRC 04-CR1
      During its service life, concrete undergoes volume changes. One of the types of deformation is shrinkage. The four main types of shrinkage associated with concrete are plastic, autogenous, carbonation, and drying shrinkage. ...
    • Corrosion Protection Service Life of Epoxy-Coated Reinforcing Steel in Virginia Bridge Decks 

      Brown, Michael C.; Weyers, Richard E.; Megan C. Wheeler (Virginia Center for Transportation Innovation and Research, 2003-09-01), FHWA/VTRC 04-CR7
      The corrosion protection service life extension provided by epoxy-coated reinforcement (ECR) was determined by comparing ECR and bare steel bars from 10 Virginia bridge decks built between 1981 and 1995. The objective was ...
    • Composite action in a steel girder span with precast deck panels :the I-81 bridge over the New River in Radford, Virginia 

      Cousins, Thomas E. (Virginia Center for Transportation Innovation and Research, 2003-10-01), VTRC 04-R4
      Two parallel bridges carry I-81 north and south over the New River in southwest Virginia, near the city of Radford. The bridges are identical in design and have been in place since 1985. In recent years, a number of ...
    • Assessment of the Performance of Several Roadway Mixes under Rain, Snow, and Winter Maintenance Activities 

      Flintsch, Gerardo W. (Virginia Center for Transportation Innovation and Research, 2004-02-01), VTRC 04-CR18
      The purpose of this study was to assess the relative functional performance, including skid resistance and splash and spray, of five hot-mix-asphalt (HMA) surfaces and a tinned portland cement concrete highway surface ...
    • Influence of the new LRFD seismic guidelines on the design of bridges in Virginia 

      M.A. Widjaja; Roberts-Wollmann, Carin L. (Virginia Center for Transportation Innovation and Research, 2004-03-01), VTRC 04-CR17
      The Virginia Department of Transportation is currently using the AASHTO Standard Specifications for Highway Bridges, with some modifications, for its seismic highway bridge design. In April 2001, the Recommended LRFD ...
    • Plate & tube bridge deck evaluation in the deck test bed of the Troutville, Virginia, weigh station 

      Cousins, Thomas E.; Lesko, John J. (Virginia Center for Transportation Innovation and Research, 2004-03-01), VTRC 04-CR12
      This report addresses the laboratory and field performance of multi-cellular fiber-reinforced polymer (FRP) composite bridge deck systems. We focus specifically on FRP decks produced from adhesively bonded pultrusions where ...
    • Creep of high-strength normal and lightweight concrete 

      Edward C. Vincent; Bradley D. Townsend; Weyers, Richard E. (Virginia Center for Transportation Innovation and Research, 2004-05-01), VTRC 04-CR8
      In addition to immediate elastic deformations, concrete undergoes time-dependent deformations that must be considered in design. Creep is defined as the time-dependent deformation resulting from a sustained stress. Shrinkage ...