00625272

Component

http://onlinepubs.trb.org...trr/1992/1347/1347-005.pdf

https://scholar.google.co...nkel&publication_year=1992

Presented are the results of a study undertaken to evaluate the performance of high molecular weight methacrylate (HMWM) monomers used to (a) treat the cracks and seal the surfaces of two tined bridge decks, (b) seal the surface of one untined bridge deck, (c) fill the cracks and seal the surface of a pavement to retard an alkali-silica-aggregate reaction, and (d) prime the surface of a bridge deck for a polyester styrene concrete overlay. For the two tined bridge decks, the evaluation was based on data collected during application, skid tests, permeability tests on cores removed from decks, petrographic examination of the cracks in the cores, and inspections of the decks for leaks. The evaluation indicated that no significant problems were associated with the application and that the treatments partially filled the top 1/2 in. of the cracks. However, because of traffic- and temperature-induced strains across the cracks, the polymer in many of the treated cracks was cracked after 1 year in service. Even so, the treatments significantly reduced the permeability to chloride ions of the top 2 in. of both the cracked and uncracked sections of the decks. The permeability of cores taken from treated cracked and uncracked areas after 1 year was 59% and 43%, respectively, of the permeability of the untreated bases. After 3 years, the permeability was 64% and 42%, respectively. Study results indicate that applying HMWM monomers is a practical way to reduce the infiltration of chloride ions into concrete surfaces with cracks that are wider than 0.15 mm because of the low cost and ease with which the treatment can be applied as compared with a pressure injection of epoxy. Results also indicate that HMWM monomers can be applied as a prime coat to improve the bond strength of polyester styrene concrete overlays.

This paper appears in Transportation Research Record No. 1347, Maintenance of Highway Structures. 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

01405025

English

p. 29-36

1992

Transportation Research Record

0309052130

Figures (3) ; Photos (2) ; References (9) ; Tables (6)

Alkali silica reactions; Bridge decks; Chlorides; Concrete overlays; Core samples; Cost effectiveness; Cracking; Performance evaluations; Permeability; Primers; Sealing (Technology)

Bonded concrete overlays

Bridges and other structures; Design; Geotechnology; Highways; Maintenance and Preservation; Materials; I24: Design of Bridges and Retaining Walls; I35: Miscellaneous Materials; I61: Equipment and Maintenance Methods

TRIS, TRB, ATRI

Nov 3 1993 12:00AM

• ASSESSMENT OF BRIDGE VULNERABILITY TO HYDRAULIC FAILURES
• BENEFITS OF USING HALF-CELL POTENTIAL MEASUREMENTS IN CONDITION SURVEYS OF CONCRETE BRIDGE DECKS
• EVALUATION OF INFRARED THERMOGRAPHY AS A MEANS FOR DETECTING DELAMINATIONS IN REINFORCED CONCRETE BRIDGE SUBSTRUCTURE ELEMENTS (ABRIDGMENT)
• IMPROVED GROUTS FOR BONDED TENDONS IN POSTTENSIONED BRIDGE STRUCTURES
• INCLUSION OF REBAR CORROSION RATE MEASUREMENTS IN CONDITION SURVEYS OF CONCRETE BRIDGE DECKS
• INNOVATIVE TECHNOLOGY FOR COMPUTER-AUTOMATED BRIDGE INSPECTION PROCESS
• LABORATORY AND FIELD CORROSION TEST METHODS FOR HIGHWAY METALS EXPOSED TO INHIBITED ROCK SALT (ABRIDGMENT)
• MEASURING THE CHLORIDE CONTENT OF CONCRETE
• NETWORK BRIDGE DECK SURVEYS USING HIGH-SPEED RADAR: CASE STUDIES OF 44 DECKS (ABRIDGMENT)
• RECENT RESEARCH ON ALTERNATIVE DEICERS AT CHEVRON
• SIMULATION APPROACH TO PREDICTION OF HIGHWAY STRUCTURE CONDITIONS