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Mahdi Nematzadeh

Mahdi Nematzadeh

Academic rank: Professor
ORCID: 0000-0002-8065-0542
Education: PhD.
ScopusId: 36198613700
HIndex:
Faculty: Faculty of Technology and Engineering
Address:
Phone: 011-35302903

Research

Title
Assessing influence of active and passive confinement on flexural behaviour of CFST beams
Type
JournalPaper
Keywords
concrete-filled steel tubes, active and passive confinement, flexural behaviour, absorbed energy
Year
2019
Journal Croatian Association of Civil Engineers
DOI
Researchers Morteza Naghipour ، marzieh Nemati ، Javad Jalali ، Mahdi Nematzadeh

Abstract

The aim of this study is to investigate the effect of active and passive confinement on the flexural behaviour of concrete-filled steel tubes. Three-point flexural test is carried out on twelve confined specimens. The main variable parameters are: tube diameter to thickness ratio (20, 30, and 60), compressive strength of concrete core (15 MPa and 45 MPa), and type of confinement (active or passive). The flexural capacity, energy absorption, flexibility and failure mode of confined specimens, as well as the cracking pattern of concrete core at failure point, are evaluated in this study. The results show that active confinement leads to lower ductile behaviour in specimens with higher strength of concrete core.