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Article

Mechanical Connectors to Enhance the Interfacial Debonding of Concrete Overlays

1
Department of Civil and Environmental, Universitat Politècnica de Catalunya (UPC-Barcelona Tech), Escola Tècnica Superior d’Enginyers de Camins Canals i Ports de Barcelona (ETSECCPB), Carrer de Jordi Girona, 1, 08034 Barcelona, Spain
2
Instituto Español del Cemento y sus Aplicaciones (IECA), C/José Abascal, 53–1º, 28003 Madrid, Spain
3
Department of Project and Construction Engineering, Universitat Politècnica de Catalunya (UPC-Barcelona Tech), Escola Tècnica Superior d’Enginyers Industrials de Barcelona (ETSEIB), Av. Diagonal, 647, 08028 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(11), 3876; https://doi.org/10.3390/app10113876
Received: 17 April 2020 / Revised: 25 May 2020 / Accepted: 30 May 2020 / Published: 3 June 2020
(This article belongs to the Section Civil Engineering)
Concrete bonded whitetoppings and overlays usually fail due to a loss of bond between the layers as a consequence of direct actions (traffic loads) or indirect actions (temperature differences or shrinkage in the layers). These actions generate stresses in the interface that may exceed the strength capacity of the union between layers. This paper proposed an innovative solution for this problem that consisted of placing mechanical connectors in the overlay interfaces to provide them with post-cracking strength and maintaining the monolithic response of the pavement. Three experimental programs on real-scale pavements with two types of mechanical connectors were studied under heavy traffic in terms of structural performance. Findings reveal that this technique might be an excellent solution to the problem of interfacial debonding. View Full-Text
Keywords: whitetopping; concrete overlay; pavements; debonding; post-cracking strength; screws-connectors whitetopping; concrete overlay; pavements; debonding; post-cracking strength; screws-connectors
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MDPI and ACS Style

López-Carreño, R.-D.; Carrascón, S.; Aguado, A.; Pujadas, P. Mechanical Connectors to Enhance the Interfacial Debonding of Concrete Overlays. Appl. Sci. 2020, 10, 3876. https://doi.org/10.3390/app10113876

AMA Style

López-Carreño R-D, Carrascón S, Aguado A, Pujadas P. Mechanical Connectors to Enhance the Interfacial Debonding of Concrete Overlays. Applied Sciences. 2020; 10(11):3876. https://doi.org/10.3390/app10113876

Chicago/Turabian Style

López-Carreño, Rubén-Daniel, Sergio Carrascón, Antonio Aguado, and Pablo Pujadas. 2020. "Mechanical Connectors to Enhance the Interfacial Debonding of Concrete Overlays" Applied Sciences 10, no. 11: 3876. https://doi.org/10.3390/app10113876

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