Cyclic beam bending test for assessment of bond-clip behavior

Type of content
Publisher's DOI/URI
Thesis discipline
Degree name
Publisher
University of Canterbury. Civil and Natural Resources Engineering
Journal Title
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Language
Date
2012
Authors
Ashtiani, M.S.
Dhakal, Rajesh
Scott, A.
Bull, D.K.
Abstract

Bond between reinforcement and concrete is one of the most important aspects in structural response of reinforced concrete (RC) members. Basic RC theories assume compatibility of strains between concrete and steel which is valid only if a perfect bond exists between the two materials. Therefore investigating bond properties under different loading conditions and considering various variables is of great importance. Although researchers have extensively explored bond-slip relationships for different concrete and steel types under monotonic loading using different test setups, less is reported on bond properties under reversed cyclic loading. Modified pullout tests have previously been used to investigate cyclic bond-slip relationships; nevertheless these tests do not represent the actual bond behaviour inside RC members subjected to flexural actions. This study focuses on developing a specific test setup and designing a beam specimen for cyclic bond test following RILEM recommendations for monotonic assessment of bond properties, which require a two-point loading (four-point bending) setup. The main challenge was to design a stable cyclic test setup in order to ensure no additional forces generated in the system during the test. High strength self-compacting concrete (HSSCC) beam specimens were chosen for the test; the beam specimens were designed in such a way that they could withstand load reversals.

Description
Citation
Ashtiani, M.S., Dhakal, R.P., Scott, A., Bull, D.K. (2012) Cyclic beam bending test for assessment of bond-clip behavior. Lisbon, Portugal: 15th World Conference on Earthquake Engineering (15WCEE), 24-28 Sep 2012.
Keywords
cyclic, beam, bond-slip, high-strength self-compacting concrete
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Fields of Research::40 - Engineering::4005 - Civil engineering::400510 - Structural engineering
Fields of Research::40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
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