Performance Prediction of the Dowel Bar Retrofit Technique Using Statistical Modelling

ABSTRACT Dowel Bar Retrofitting (DBR) is a pavement rehabilitation technique commonly adopted to increase the service life of pavements in the United States. This method involves either preventative or corrective maintenance of structural cracks or joints in jointed concrete pavement structures. The performance of DBR installations is typically measured using the Load Transfer Efficiency (LTE) parameter based on deflections. In this study, DBR was modeled using finite element analysis considering geometric, material, and support parameters. Statistical analyses were used to develop equations to predict performance of DBR in terms of stress transfer across joints or cracks. The use of stress-based load transfer provides engineers a more direct ability to determine what effect the load transfer mechanism has on reducing bending stress in the slab. This allows for proper retrofit strategies to be adopted thereby reducing fatigue mechanisms and extending the service life of rigid pavement systems.

[1]  Anastasios M. Ioannides,et al.  AGGREGATE INTERLOCK: A PURE-SHEAR LOAD TRANSFER MECHANISM , 1990 .

[2]  Thomas R. Burnham.  A field study of PCC joint misalignment near Fergus Falls, Minnesota , 1999 .

[3]  A Toepel,et al.  REPORT ON EARLY DISTRESS (RED) RETROFIT DOWEL BARS ON I-39 , 2002 .

[4]  Michael I Hammons,et al.  Westergaard-Type Solution for Edge Load Transfer Problem: , 1996 .

[5]  George Theofanis Korovesis,et al.  Analysis of slab-on-grade pavement systems subjected to wheel and temperature loadings , 1990 .

[6]  Thomas R Burnham.  Effect of Dowel Bar Embedment Length on Joint Load Transfer Efficiency of MnROAD Concrete Pavement Test Cells , 2008 .

[7]  Jacob E. Hiller,et al.  ASSESSMENT OF RETROFIT DOWEL BENEFITS IN CRACKED PORTLAND CEMENT CONCRETE PAVEMENTS , 2004 .

[8]  Michael I Darter,et al.  PERFORMANCE MONITORING OF JOINT LOAD TRANSFER RESTORATION , 1993 .

[9]  John T Harvey,et al.  Evaluation of Dowel Bar Retrofit Alternatives Using Accelerated Pavement Testing , 2006 .

[10]  Jagannath Mallela,et al.  Finite element study of partial-depth cracks in restrained PCC slabs , 2006 .

[11]  William G. Davids,et al.  Effect of Dowel Looseness on Response of Jointed Concrete Pavements , 2000 .

[12]  Anastasios M. Ioannides,et al.  Analysis of Slabs-on-Grade for a Variety of Loading and Support Conditions. , 1984 .

[13]  Jan Olek,et al.  Dowel Bar Retrofit Mix Design and Specification , 2012 .

[14]  Danny Brown,et al.  Establishing Load Transfer in Existing Jointed Concrete Pavements , 1985 .

[15]  null null,et al.  2009 Report Card for America's Infrastructure , 2009 .

[16]  John T Harvey,et al.  Performance of Dowel Bar Retrofitted Concrete Pavement Under Heavy Vehicle Simulator Loading , 2003 .

[17]  E Embacher,et al.  CONSTRUCTION REPORT ON THE INSTALLATION OF RETROFIT DOWEL BAR TEST SECTIONS ON TH 23 , 2001 .

[18]  Linda M Pierce,et al.  Ten-Year Performance of Dowel-Bar Retrofit: Application, Performance, and Lessons Learned , 2003 .

[19]  Lev Khazanovich.  Structural analysis of multi-layered concrete pavement systems , 1994 .

[20]  Ernest J. Barenberg,et al.  FINITE-ELEMENT ANALYSIS OF JOINTED OR CRACKED CONCRETE PAVEMENTS , 1978 .

[21]  Linda M Pierce.  PORTLAND CEMENT CONCRETE PAVEMENT REHABILITATION IN WASHINGTON STATE: CASE STUDY , 1994 .

[22]  B. Friberg.  Closure of "Design of Dowels in Transverse Joints of Concrete Pavements" , 1940 .

[23]  Joe P. Mahoney,et al.  Experimental Verification of Rigid Pavement Joint Load Transfer Modeling with EverFE , 1999 .