00795302

Component

https://doi.org/10.3141/1697-05

http://scholar.google.com...urer&publication_year=2000

The bond strength between portland cement overlays and bridge decks treated with high-molecular-weight methacrylate sealers is examined. The data universally suggest that sealers reduce the available bond strength. However, extra surface preparation techniques, such as light sandblasting of the sealed surface or broadcasting sand over the surface immediately after sealing [at approximately 1 kg/sq m (20 lb/100 sq ft)], restore the strengths to 80% or 85%, respectively, of the unsealed surface. Service-level fatigue testing and loading well beyond the serviceability limit state do not adversely affect the bond strength so long as the sealed surface is treated before the application of the overlay. Therefore, to seal the existing cracks, bridge decks may be sealed if either of the recommended secondary surface preparation techniques is followed.

This paper appears in Transportation Research Record No. 1697, Maintenance and Management of Bridges and Pavements.

English

p. 24-30

2000

Transportation Research Record

030907150X

Figures (10) ; References (4) ; Tables (4)

Bond strength (Materials); Bridge decks; Concrete overlays; Methyl methacrylate; Sand; Sand blasting; Seal coats; Spreading; Surface preparation

High-molecular-weight methacrylate

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

TRIS, TRB, ATRI

Jul 17 2000 12:00AM

• BRIDGE INSPECTION DECISION MAKING BASED ON SEQUENTIAL HYPOTHESIS TESTING METHODS
• COST-EFFECTIVENESS OF CRACK SEALING MATERIALS AND TECHNIQUES FOR ASPHALT PAVEMENTS
• INTEGRATED MULTIMEDIA UNIFORM BRIDGE ELEMENT IDENTIFICATION SYSTEM DATABASE FOR BRIDGE INSPECTION AND MAINTENANCE
• ULTRASONIC INSPECTION OF BRIDGE HANGER PINS
• USER COST MODEL FOR BRIDGE MANAGEMENT SYSTEMS