Now showing items 1-20 of 71

    • Full-Scale Laboratory Evaluation of Hybrid Composite Beams for Implementation in a Virginia Bridge 

      Moen, Cristopher D.; Roberts-Wollmann, Carin L.; Cousins, Thomas E. (Virginia Transportation Research Center, 2018-08)
      This research project studied a steel-reinforced concrete and fiber-reinforced polymer (FRP) structural element called the Hybrid-Composite Beam (HCB). The beam was used in a skewed simple span superstructure replacement ...
    • Implementation of a Precast Inverted T-Beam System in Virginia: Part II: Analytic and Field Investigations 

      Menkulasi, Fatmir; Cousins, Thomas E.; Roberts-Wollmann, Carin L. (Virginia Transportation Research Center, 2018-08)
      The inverted T-beam superstructure is a bridge system that provides an accelerated construction alternative for short-to-medium-span bridges. The system consists of adjacent precast inverted T-beams with a cast-in-place ...
    • Carbon Fiber Reinforced Polymer Grids for Shear and End Zone Reinforcement in Bridge Beams 

      Ward, John; Magee, Mitch; Roberts-Wollmann, Carin L.; Cousins, Thomas E. (Virginia Transportation Research Center, 2018-01)
      Corrosion of reinforcing steel reduces life spans of bridges throughout the United States; therefore, using non-corroding carbon fiber reinforced polymer (CFRP) reinforcement is seen as a way to increase service life. The ...
    • Roanoke Urban Stormwater Research: Lick Run / Trout Run Phase V Final Report 

      Dymond, Randel L.; Brendel, Conrad; Woodson, David (2018-12-19)
      Effective management and restoration of urban watersheds requires considerable information describing the watershed’s land surface, drainage system, and receiving streams, in order to understand the important hydrologic ...
    • Thermal Response of Integral Abutment Bridges with Mechanically Stabilized Earth Walls 

      Arenas, Alfredo E.; Filz, George M.; Cousins, Thomas E. (Virginia Center for Transportation Innovation and Research, 2013-03-01)
      The advantages of integral abutment bridges (IABs) include reduced maintenance costs and increased useful life spans. However, improved procedures are necessary to account for the impacts of cyclic thermal displacements ...
    • Roanoke Urban Stormwater Research: Phase 1 - Discovery Final Report 

      Dymond, Randel L.; Aguilar, Marcus F.; Bender, Paul; Hodges, Clayton (2014-12-01)
      This report is the final product of an 8 month long collaboration between the City of Roanoke’s Environmental, Engineering, Public Works, GIS, and Planning staff, and researchers in the Via Department of Civil and Environmental ...
    • Investigation of the Resistance of Pile Caps and Integral Abutments to Lateral Loading 

      Mokwa, Robert L.; Duncan, J. Michael (Virginia Center for Transportation Innovation and Research, 2002-02-01)
      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)
      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 ...
    • 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)
      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)
      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 ...
    • 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)
      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 ...
    • High-speed texture measurement of pavements 

      McGhee, Kevin K.; Flintsch, Gerardo W. (Virginia Center for Transportation Innovation and Research, 2003-02-01)
      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 ...
    • Glass fiber reinforced polymer bars as top mat reinforcement for bridge decks 

      DeFreese, James Michael; Roberts-Wollmann, Carin L. (Virginia Center for Transportation Innovation and Research, 2002-09-01)
      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)
      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 ...
    • 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)
      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 ...
    • 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)
      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)
      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. ...
    • 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)
      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, ...
    • 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)
      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 ...
    • 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)
      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 ...