Overview of High-Molecular-Weight Methacrylate for Sealing Cracks in Concrete Bridge Decks

2010 ◽  
Vol 2202 (1) ◽  
pp. 77-81 ◽  
Author(s):  
Ashraf Rahim ◽  
Daniel Jansen ◽  
Nagi Abo-Shadi ◽  
Jaro Simek
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Bridge Decks ◽  
Concrete Bridge ◽  
Concrete Bridge Decks

Bond Characteristics of Overlays Placed over Bridge Decks Sealed with High-Molecular-Weight Methacrylate

2000 ◽  
Vol 1697 (1) ◽  
pp. 24-30 ◽  
Author(s):  
Bahram M. Shahrooz ◽  
Arnol J. Gillum ◽  
Jeremiah Cole ◽  
Ahmet Turer
Keyword(s):  
Molecular Weight ◽  
Bond Strength ◽  
High Molecular Weight ◽  
Fatigue Testing ◽  
Bridge Decks ◽  
Limit State ◽  
Surface Preparation ◽  
Service Level ◽  
Preparation Techniques ◽  
Bond Characteristics

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/m2 (20 lb/100 ft2)], restore the strengths to 80 or 85 percent, 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.

Sign in / Sign up

Export Citation Format

Share Document