Development of an Index for Concrete Bridge Deck Management in Utah

The purpose of this research was to develop a new index for concrete bridge deck management in Utah. Data were collected in the summer of 2005 from 15 concrete bridge decks in Salt Lake City. Decks ranged from 2 to 21 years in age and were all constructed with epoxy-coated rebar. Data collected from visual inspection, sounding, Schmidt hammer testing, half-cell potential testing, and chloride concentration testing were analyzed with statistics, and age, cover, and half-cell potential were ultimately selected for inclusion in a new Utah Bridge Deck Index (UBDI), which was structured around a deduct system using a 100-point scale. Coefficients were selected primarily on the basis of the judgment of the researchers and the Utah Department of Transportation (UDOT) personnel involved in the research. Also, threshold values for maintenance, rehabilitation, and replacement (MR&R) options were specified to be the same as those associated with standard sufficiency ratings. The UBDI and corresponding MR&R recommendation were then provided for each of the tested bridge decks. In addition, consideration of the possibility of treatment applications led to required adjustments in the UBDI calculation; the treatment options that were considered include an epoxy seal, a high-performance concrete overlay, and an asphalt membrane overlay. Four case scenarios were developed to demonstrate the response of the revised UBDI equation to these treatments. Finally, as aids for Utah DOT personnel implementing this research, charts were created to facilitate rapid determination of the required number of half-cell potential and cover measurements for different levels of reliability and tolerance.

[1]  C. Borror.  An Introduction to Statistical Methods and Data Analysis, 5th Ed. , 2002 .

[2]  William M Moore.  DETECTION OF BRIDGE DECK DETERIORATION , 1973 .

[3]  Matthew G. Karlaftis,et al.  Development of discrete models of infrastructure deterioration with panel data , 1997 .

[4]  Samer Madanat,et al.  Bridge Inspection Decision Making Based on Sequential Hypothesis Testing Methods , 2000 .

[5]  R F Stratfull,et al.  CORROSION TESTING OF BRIDGE DECKS , 1975 .

[6]  Z. Lounis.  Probabilistic modeling of chloride contamination and corrosion of concrete bridge structures , 2003, Fourth International Symposium on Uncertainty Modeling and Analysis, 2003. ISUMA 2003..

[7]  Michael G. Fitch,et al.  DETERMINATION OF END OF FUNCTIONAL SERVICE LIFE FOR CONCRETE BRIDGE DECKS , 1995 .

[8]  Samer Madanat,et al.  Semiparametric Hazard Rate Models of Reinforced Concrete Bridge Deck Deterioration , 2001 .

[9]  Samer Madanat,et al.  Infrastructure state transition probability computation using duration models , 2002 .

[10]  Bernhard Elsener,et al.  Half-cell potential mapping to assess repair work on RC structures , 2001 .

[11]  D G Manning,et al.  DETECTING DEFECTS AND DETERIORATION IN HIGHWAY STRUCTURES , 1985 .

[12]  Paul D. Carter,et al.  Preventive Maintenance of Concrete Bridge Decks , 1989 .

[13]  Benjamin A. Graybeal,et al.  A comparison of nondestructive evaluation methods for bridge deck assessment , 2003 .

[14]  Benjamin A. Graybeal,et al.  Reliability and Accuracy of Routine Inspection of Highway Bridges , 2001 .

[15]  Robert J. Peterman,et al.  DURABILITY ASSESSMENT OF BRIDGES WITH FULL-SPAN PRESTRESSED CONCRETE FORM PANELS , 1999 .

[16]  Fernando Fonseca,et al.  Concrete Bridge Deck Condition Assessment and Improvement Strategies , 2004 .

[17]  Teresa M Adams,et al.  Analysis of Life-Cycle Maintenance Strategies for Concrete Bridge Decks , 2004 .

[18]  Paul J. Tikalsky.  Long-term durability models of concrete in highway bridges, and Practical approaches to durability-based design , 2004 .

[19]  Arthur J. Helmicki,et al.  Subjective and Objective Evaluations of Bridge Damage , 1999 .

[20]  Dennis L. Eggett,et al.  Effect of Stay-in-Place Metal Forms on Performance of Concrete Bridge Decks , 2006 .

[21]  Steven B. Chase,et al.  DYNAMICS AND FIELD TESTING OF BRIDGES , 2000 .

[22]  F Fanous,et al.  IMPACT OF DECK CRACKING ON DURABILITY , 2000 .

[23]  Philip D Cady.  BRIDGE DECK REHABILITATION DECISION MAKING , 1985 .

[24]  Mark G. Stewart,et al.  Time-dependent reliability of deteriorating reinforced concrete bridge decks , 1998 .

[25]  Robert S. Tuttle,et al.  Condition Analysis of Concrete Bridge Decks in Utah , 2006 .

[26]  James M. W. Brownjohn,et al.  Bridge Structural Condition Assessment Using Systematically Validated Finite-Element Model , 2004 .

[27]  Hani G. Melhem,et al.  PREDICTION OF REMAINING SERVICE LIFE OF BRIDGE DECKS USING MACHINE LEARNING , 2003 .

[28]  Michael P. Enright,et al.  SURVEY AND EVALUATION OF DAMAGED CONCRETE BRIDGES , 2000 .

[29]  R. Lyman Ott.,et al.  An introduction to statistical methods and data analysis , 1977 .

[30]  R. Daniel Costley,et al.  Acoustic inspection of concrete bridge decks , 1999, Smart Structures.

[31]  Tom Scullion,et al.  Repeatability and Reliability of the Tube Suction Test , 2001 .

[32]  Samer Madanat,et al.  Computation of Infrastructure Transition Probabilities using Stochastic Duration Models , 2002 .

[33]  George Morcous,et al.  Modeling Bridge Deterioration Using Case-Based Reasoning , 2002 .