Push-Off Tests in the Study of Cyclic Behavior of Interfaces between Concretes Cast at Different Times

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Figueira, D (Autor) Outra; Carlos Sousa (Autor) FEUP; Rui Calçada (Autor) FEUP; Neves, AS (Autor) Outra

Revista

Título: Journal of Structural Engineering

Vol. 142

Página Final: 04015101

ISSN: 0733-9445

Editora: ASCE

Indexação

ISI Web of Knowledge - 19 Citações

Scopus - 24 Citações

Outras Informações

ID Authenticus: P-00J-YVP

DOI: 10.1061/(asce)st.1943-541x.0001364

Abstract (EN): The knowledge about the cyclic behavior and effects of fatigue on interfaces between concrete cast at different times, subjected to shear stress, is still very limited. This aspect is particularly relevant in structures subjected to important cyclic loads, such as railway bridges. In this context, first, a brief state of the art on the monotonic and cyclic behavior of interfaces between concretes cast at different times is presented. Then, the test campaign, which was aimed at obtaining experimental support for modeling the behavior of such interfaces, subjected to a high number of load cycles, is described, and the corresponding results are discussed and analyzed in terms of slip and crack opening, stress variations in the monotonic tests, failure mode, and number of resisting load cycles. It was further observed that the number of resisting load cycles increases as the maximum load level decreases. On the basis of this evidence, an experimental S-N curve was set for this type of interface. (C) 2015 American Society of Civil Engineers.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10