A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of Bridge Deck Sealers
This study focuses on the evaluation of bridge deck sealers commonly used on highway bridge decks and their relative performance. After reviewing the most up-to-date research findings on chemical sealers used by state DOTs, four sealer products that could potentially be used by the Colorado Department of Transportation (CDOT) were selected for evaluation. High molecular weight methacrylate (HMWM), two epoxies, and a silane were assessed for their skid resistance and ability to block or slow down moisture and chloride ion penetration into concrete bridge decks. Bridge structure E-17-QM (westbound US 36 to I-270 over I-25) was selected for the field study. The four sealers were installed on the deck surface of Bridge E- 17-QM by professional contractors on 06/02/2010. Skid resistance, temperature variation, moisture fluctuation, and chloride concentration profiles in concrete were selected as the four experimental parameters for evaluating the performance of the four sealers. Eighteen integrated sensors were installed in the bridge decks in the five testing sections and at different depths for monitoring the internal temperature and relative humidity distributions in concrete. Concrete cores were taken at four periods during the project to test for chloride concentration profiles. The British Pendulum Tester (BPT) was used to measure the skid resistance of the concrete surface with and without sealers. From the analysis and comparisons of the test data, the performances of the four sealers were ranked in terms of the four experimental parameters. Implementation Without further long-term data, the use of sealers is recommended as a viable short-term protection system. If CDOT chooses to use a long-term bridge deck sealing system, HMWM is recommended over the other sealers. Eligible bridge decks should be selected based on the assessment of percent deck deterioration, estimated time to corrosion, deck surface condition, and concrete quality.
Evaluation of Bridge Deck Sealers
This study focuses on the evaluation of bridge deck sealers commonly used on highway bridge decks and their relative performance. After reviewing the most up-to-date research findings on chemical sealers used by state DOTs, four sealer products that could potentially be used by the Colorado Department of Transportation (CDOT) were selected for evaluation. High molecular weight methacrylate (HMWM), two epoxies, and a silane were assessed for their skid resistance and ability to block or slow down moisture and chloride ion penetration into concrete bridge decks. Bridge structure E-17-QM (westbound US 36 to I-270 over I-25) was selected for the field study. The four sealers were installed on the deck surface of Bridge E- 17-QM by professional contractors on 06/02/2010. Skid resistance, temperature variation, moisture fluctuation, and chloride concentration profiles in concrete were selected as the four experimental parameters for evaluating the performance of the four sealers. Eighteen integrated sensors were installed in the bridge decks in the five testing sections and at different depths for monitoring the internal temperature and relative humidity distributions in concrete. Concrete cores were taken at four periods during the project to test for chloride concentration profiles. The British Pendulum Tester (BPT) was used to measure the skid resistance of the concrete surface with and without sealers. From the analysis and comparisons of the test data, the performances of the four sealers were ranked in terms of the four experimental parameters. Implementation Without further long-term data, the use of sealers is recommended as a viable short-term protection system. If CDOT chooses to use a long-term bridge deck sealing system, HMWM is recommended over the other sealers. Eligible bridge decks should be selected based on the assessment of percent deck deterioration, estimated time to corrosion, deck surface condition, and concrete quality.
Evaluation of Bridge Deck Sealers
Y. Liang (author) / B. Gallaher (author) / Y. Xi (author)
2014
65 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Adhesives & Sealants , Coatings, Colorants, & Finishes , Bridge deck sealants , Highway bridges , Performance evalaution , Research findings , Chemical sealers , Epoxies , Silanes , High molecular weight methacrylate (HMWM) , British Pendulum Tester
Comparative Evaluation of Concrete Bridge Deck Sealers
| NTIS | 2015
Preformed elastomeric bridge joint sealers
| Engineering Index Backfile | 1967
Evaluation of Penetrating Sealers for Reinforced Concrete Bridge Decks
| British Library Online Contents | 2009
Concrete sealers for protection of bridge structures
| TIBKAT | 1981
Concrete sealers for protection of bridge structures
| UB Braunschweig | 1981