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Title: EVALUATION OF PREMATURE DETERIORATION OF CONCRETE BRIDGE BARRIERS BY PETROGRAPHIC EXAMINATION
Accession Number: 00984630
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Many of the current-generation concrete bridge barriers used in Michigan have deteriorated at a rate greater than expected. For an assessment of the possible causes of this premature distress with the objective of alleviating future occurrences, sixteen core specimens from eight sites constructed between 1983 and 2001 were evaluated. The evaluation included visual inspection, stereo and petrographic optical microscopy, and scanning electron microscopy. The major observations revealed through this analysis were that poor consolidation, marginal air-void systems, alkali-silica reaction associated with chert and siltstone in the fine aggregate, corrosion of reinforcing steel, and possibly frost susceptibility of fine siltstone aggregates were responsible for the deterioration. These results provide the basis for improving the quality of such barriers in future construction.
Supplemental Notes: This paper appears in Transportation Research Record No. 1893, Concrete 2004.
Monograph Title: Monograph Accession #: 00984628
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Delem, LVan Dam, TPeterson, K RSutter, LPagination: p. 11-17
Publication Date: 2004
Serial: ISBN: 0309094909
Features: Figures
(7)
; Photos
(4)
; References
(7)
; Tables
(2)
TRT Terms: Uncontrolled Terms: Subject Areas: Highways; Materials; I32: Concrete
Files: TRIS, TRB, ATRI
Created Date: Jan 27 2005 12:00AM
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