Details:

Creators:
Liang, Yu-chang ; Gallaher, Benjamin ; Xi, Yunping
Liang, Yu-chang ; Gallaher, Benjamin ; Xi, Yunping Less -
Corporate Creators:
University of Colorado at Denver. Dept. of Civil Engineering
Corporate Contributors:
United States. Federal Highway Administration
Subject/TRT Terms:
[+]
Bridge Decks Concrete Bridges Epoxides Evaluation And Assessment Field Tests Methyl Methacrylate Pressure Resistance Sealing Compounds Silane
Publication/ Report Number:
CDOT-2014-6
Resource Type:
Tech Report
Geographical Coverage:
Colorado
Corporate Publisher:
Colorado. Dept. of Transportation. Applied Research and Innovation Branch
Abstract:
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.


Format:
PDF
Funding:
80.11
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:f668f5402d05b09b95c58247c7140179ccd45131b976e62e2204674cb5f61531
Download URL:
https://rosap.ntl.bts.gov/view/dot/27455/dot_27455_DS1.pdf
File Type:

Supporting Files

• No Additional Files

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