Stress-Strain Relationship of Synthetic Fiber Reinforced Concrete Columns

Abstract

Abstract. Many empirical confinement models for normal and high strength concrete have been developed. Nevertheless, reported studies in the term of confinement of fiber reinforced concrete are limited. Whereas, the use of fiber reinforced concrete in structural elements has become the subject of the research and has indicated positive experiences. Since the stress-strain relationship of concrete in compression is required for analysis of structural members, the study of the stress-strain relationship for synthetic fiber reinforced concrete is substantial. The aim of the study is to examine the capabilities of the various models available in the literature to predict the actual experimental behavior of synthetic fiber reinforced highstrength concrete columns. The experimental data used are the results of the circular column specimens with the spiral spacing and the volume fraction of synthetic fiber as the test variables. The axial stress-strain curves from the tests are then compared with the various models of confinement from the literature. The performance index of each model is measured by using the coefficient of variation (COV) concept of stress and strain behavior parameter. Among the confinement models, Cusson model shows the closest valid value of the coefficient of variation.

A Comparative Study on the Confinement Models of High-Strength Steel Fiber Concrete

“…Furthermore, other technological developments, namely concrete-reinforcing fibers, are also required. The addition of certain percentages to the mixture is known to increase the strength, shear capacity, and, more importantly, ductility (Aoude et al, 2014;Han et al, 2015;Lee et al, 2015;Rosidawani et al, 2017;Hanif and Kanakubo, 2017;Janani and Santhi, 2018;Amariansah and Karlinasari, 2019). Steel fiber concrete, including its behavior at high temperatures, has also been extensively studied and reportedly has good ductility (Korsun et al, 2015;2019).…”