Performance of a Nongrouted Thin Bonded PCC Overlay, HR-291, 1992

(1992) Performance of a Nongrouted Thin Bonded PCC Overlay, HR-291, 1992. Transportation, Department of


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The use of a thin bonded concrete overlay atop an older surface has been widely incorporated for pavement rehabilitation in Iowa since the early 70's. Two test sections were constructed in 1985 on county road T61 on the Monroe-Wapello County line without the use of grout as a bonding agent to determine if adequate bond could be achieved and structural capacity uncompromised. Both test sections have performed well with one section having higher bond strengths, lower roughness values, higher structural capacity, and less debonding at the joints than the other section. Overall, both ungrouted sections have performed well under substantial truck traffic with minimal surface distress. More attention should be given, however, to rectifying apparent debonding at the joints when no grout is used as a bonding agent.

Item Type: Departmental Report
Keywords: Bearing capacity, Bond strength (Materials), Bonding, Concrete overlays, Cracking, Debonding, Grout, Pavement joints, Performance evaluations, Roughness, Test sections, Thin films, Bonded concrete overlays
Subjects: Transportation > Pavements
Transportation > Roads and highways
Transportation > Design and Construction
ID Code: 16477
Deposited By: Iowa DOT Library
Deposited On: 24 Mar 2014 11:53
Last Modified: 05 Nov 2014 15:57