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Title: PROTECTION AND REHABILITATION TREATMENTS FOR CONCRETE BRIDGE COMPONENTS: STATUS AND SERVICE LIFE OPINIONS OF HIGHWAY AGENCIES
Accession Number: 00620408
Record Type: Component
Digital Copy: Availability: Find a library where document is available Abstract: As part of Task 1 of Strategic Highway Research Program Project C-103, "Concrete Bridge Protection and Rehabilitation: Chemical and Physical Treatments", state and provincial highway agencies in the United States and Canada were surveyed in early 1989 by mailed questionnaire on the status and service life of protective and rehabilitative treatments applied to concrete components of bridges in their jurisdictions. Responses were received from 47 states and 9 provinces. Respondents indicated that patching with rigid mortar or concrete (portland cement, quick-set, or polymer) is more widely accepted as a standard practice than any other deck treatment category (71.4% of agencies). Some treatments were judged by more agencies to be experimental rather than standard and were associated with generally lower acceptance frequencies. With the exception of cathodic protection, treatments for substructure and superstructure concrete were judged to be far less experimental than those for decks, and the standard acceptance frequencies more uniform. Opinions on the service life of treatments were generally widely scattered. Median responses for deck treatments varied from 1 year for asphalt concrete patching to greater than 20 years for micro-silica overlays; and for nondeck treatments from 5 to 10 years for sealers to 20 years for cathodic protection. Questionnaire responses have been used to focus the study of service life expectancy in Task 1 on those treatments considered to be in the mainstream of current practice.
Supplemental Notes: This paper appears in Transportation Research Record No. 1304, Highway Maintenance Operations and Research 1991. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01407142
Authors: Chamberlin, W PWeyers, R EPagination: p. 114-121
Publication Date: 1991
Serial: ISBN: 0309051118
Features: Figures
(7)
; References
(9)
; Tables
(4)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Design; Highways; Maintenance and Preservation; Security and Emergencies; I61: Equipment and Maintenance Methods
Files: TRIS, TRB
Created Date: Mar 31 1992 12:00AM
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