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

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Figueira, D (Author) Other; Carlos Sousa (Author) FEUP; Rui Calçada (Author) FEUP; Neves, AS (Author) Other

Journal

Title: Journal of Structural Engineering

Vol. 142

Final page: 04015101

ISSN: 0733-9445

Publisher: ASCE

Indexing

ISI Web of Knowledge - 19 Citations

Scopus - 24 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10