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AASHTO Innovative Highway Technologies Concrete Assessment and Rehabilitation
DRAFT:
Transition Report for Concrete Assessment and Rehabilitation

CONTENTS

  • Introduction
  • Implementation strategies
  • Product summary, description, cost benefit and appendix

    To be added in later draft:

  • Appendix A - Contacts/champions
  • B - Reference list of product use
  • C - Specifications/Guides
  • D - Bibliography
  • Summary

    INTRODUCTION

    Lead States

  • Florida
  • Missouri
  • Pennsylvania
  • Virginia

    Mission
    Evaluate and refine 24 SHRP products in the areas of assessment, protection, and rehabilitation of reinforced concrete structures, to provide product information, guidelines and standards for implemented products and to assist other states in implementation.

    Discussion
    The AASHTO Lead State SHRP Implementation Team for Concrete Assessment and Rehabilitation (CAR) identified 24 potential SHRP products that were candidates for implementation (see Table 1). Ten products were manuals or guides that pertained to rehabilitation of concrete, one product was a manual for concrete deterioration evaluation and thirteen products were equipment/methods that could be potentially used for concrete assessment.

    A summary report on each of the 24 products was prepared by team members so that appropriate decisions could be made as to the feasibility of implementing the product. Sixteen of the products were found to be suitable for implementation and many of these were in use or in various stages of acceptance by the lead states. Over the four year life of the CAR team efforts were made to implement the sixteen products in non lead states. The FHWA workshop on CAR was a primary vehicle for implementation and showcases were held in thirteen states. This transition report provides a summary of information on each of the sixteen products that are believed to be useful and necessary for a rapid implementation of the products and for future implementation efforts to be carried out by the AASHTO subcommittees for bridges and structures and materials.

    Product Number Product
    2026 AC impedance test for permeability
    2029A Electrical resistance test for sealers
    4009 Sacrificial anode protection systems
    2032 Concrete deterioration evaluation manual
    2034 Cathodic protection manual
    2019 Impact frequency soundness test
    2012 Detecting flaws using impact-echo
    2034 Cathodic protection guide
    4003 Measuring corrosion using spectroscopy
    2031 Portable concrete permeability device
    2029B Absorption test for sealers
    2016 Nondestructive membrane integrity test
    2040 Optimizing cathodic protection manual
    2008 Diagnostic guide using microscopy
    2025 Bond strength test method
    2001 Corrosion rate based on polarization resistance
    2030 Rapid chloride sampling and testing method
    2015 Ground-penetrating radar for deck evaluation
    2033 Electrochemical chloride removal guide
    2003 Concrete removal manual
    2035 Rapid deck rehabilitation manual
    2036 Selection manual for protection/rehabilitation
    2037 Corrosion protection manual
    2035 Polymer concrete overlay guide

    BRIDGE Table 1. CAR Products

    Lessons Learned
    Over the four year life of the lead state team lessons were learned that are worthy of printing with the hope that the lesson will not have to be learned again as implementation continues. Lessons learned follow.

    1. Need better communication between team members.
    2. Better screening of products to eliminate non-implementable products.
    3. More thought-out process for selecting lead states.
    4. Adequate staff and funding are required for product testing and implementation.
    5. Lead states need to understand the commitment needed.
    6. Industry representatives essential on the team.

    IMPLEMENTATION STRATEGY

    The recommended plan for further implementation of CAR products includes a showcase, update of manuals, FOCUS type publications, product refinement, and web site maintenance.

    Resources needed for further implementations include:

    • Showcases or appropriate substitute method for promoting products.
      $200,000
    • Pooled Fund
    • National Highway Institute
    • Update product procedural manuals.
      $500,000
    • Continue FOCUS type publications.
      $25,000
    • Continue product development.
      $250,000
    • Web site maintenance.
      $10,000/year

    Product summary, description, cost benefit and appendix

    A product by product summary and description for each of the 24 products follows.

    Cost benefit information and appendices are included for products recommended for implementation.

    AC IMPEDANCE TEST - 2026

    1. Not well received by states
    2. No specification
    3. No commercial unit available
    4. Not ready for implementation
    5. Other tests are in place and being used
    6. Committee dropping product

    CONCRETE SEALERS - 2029A

    1. Committee dropping
    2. More than three states have evaluated with no positive results

    REPAIRING MARINE STRUCTURES - 4009

    1. Florida is champion state
    2. Summary report available
    3. Success story
    4. Recommend AASHTO adopt

    CONDITION EVALUATION MANUAL - 2034

    1. Summary report available
    2. Success story
    3. Used in FHWA showcase
    4. Number of states using this manual
    5. Recommend AASHTO adopt publication
    6. SHRP Report - #ER-92-110

    CATHODIC PROTECTION MANUAL AND GUIDE SPEC. - 2034

    1. Widely accepted product
    2. Success story
    3. SHRP Report # 5-372
    4. Recommend AASHTO adopt publication
    5. Used in conjunction with 2040

    GUIDELINES FOR CATHODIC PROTECTION - 2040

    1. SHRP #5-670
    2. Used in conjunction with 2024
    3. Three products - (manual, specifications, and criteria)
    4. Should be combined into one publication by AASHTO

    SOUNDNESS TEST FOR CONCRETE - 2019

    1. Other procedures available
    2. No interest shown
    3. AASHTO PPA18 available
    4. Committee dropping

    FLAW DETECTION BY IMPACT - ECHO METHOD - 2012

    1. Developed directory of contacts
    2. Status reports (7 states)
    3. More detailed experiments needed.
    4. Need a transition and summary report by January

    MONITORING CATHODIC PROTECTION - 4003

    1. Transition and summary reports due by January
    2. As of 1997, no users of 17 states responding

    PERMEABILITY TEST - SURFACE AIR-FLOW METHOD - 2031

    1. Being manufactured
    2. Good screening tool
    3. Correlation tables between 7277 and this piece of equipment available in September
    4. Need transition and summary reports by January
    5. PennDOT using AASHTO - TP26 (similar to 2031)

    CONCRETE SEALERS - WATER ABSORPTION TEST - 2029B

    1. Committee dropped
    2. Not a practical test
    3. AASHTO Test TP35 available

    MEMBRANE INTEGRITY SURVEY METHOD - 2016

    1. Two states are using
    2. Too specific a method
    3. Committee dropping
    4. Summary report needed
    5. Wider range of applicability needed

    FLUORESCENT MICROSCOPY MANUAL - 2008

    1. Limited interest shown
    2. PennDOT using as routine
    3. Transition and summary reports needed by January
    4. Recommend AASHTO preserve the document
    5. Primary use by petrographers and researchers
    6. Recommend this procedure should go to materials subcommittee

    INTERFACIAL BOND TEST - 2025

    1. Need transition and summary reports by January
    2. Number of other tests available to evaluate shear strength
    3. Recommend this procedure should go to materials subcommittee

    CORROSION RATE METHOD - 2001

    1. Recommend use of Gecor Device
    2. Used as an alternate
    3. Transition and summary report by January

    CHLORIDE CONTENT TEST - 2030

    1. Temporary procedures already at AASHTO
    2. Success story
    3. Rapid analysis is currently used
    4. Summary and transition report needed by January by Moavin Islam

    RADAR METHODS FOR ASPHALT DECKS - 2015

    1. Being refined by FHWA
    2. Transition and summary report needed by January
    3. William Longstreet handline reports
    4. Testing being done at this time
    5. Lot of interest

    MANUAL ON CHLORIDE REMOVAL - 2033

    1. Summary report available by Dave Whitmore
    2. Success story
    3. Transition report needed by January
    4. PennDOT also looking at

    CONCRETE REMOVAL MANUAL - 2003

    1. Being used by eight states
    2. Implemented in design manual (PennDOT)
    3. Summary and transition reports by January
    4. Recommend AASHTO subcommittee preserve document

    MANUAL ON RAPID REPAIR ON BRIDGE DECKS - 2035

    1. Summary report available
    2. Used in 12 states
    3. Use in increasing with time
    4. Success story
    5. Recommend transition report be refined
    6. Using routinely PennDOT

    GUIDE FOR RAPID REPAIR ON BRIDGE DECKS - 2035

    1. Same as 2035 manual
    2. AASHTO guide available

    FIELD GUIDE ON BRIDGE REHAB PROTECTION - 2036

    1. 97 Survey - 10 users
    2. Moavin Islam - contacts
    3. Bill Payne - contacts
    4. Need pertinent documentation from Don Jackson and Moavin Islam
    5. Success story
    6. Needs to be recommended to AASHTO

    MANUAL FOR SELECTING BRIDGE REHABILITATION AND PROTECTION - 2037

    1. Life cycle costs
    2. Same as 2036
    3. Corrode software needs to be updated


  • See also the web site for the AASHTO Technology Implementation Group