A COMPARATIVE STUDY OFTHE CONFINEMENT MODELS OF HIGH-STRENGTH STEEL FIBER CONCRETE BY STATISTICAL APPROACH

view full text

Since the last four decades, the behavior of concrete contains of steel fiber, or often called steel fiber concrete, with a wide range of compressive strength has been studied. Generally, the results of the experimental program produced a material which has a more ductile compared with normal concrete or concrete without fiber. Due to the ductility properties of the material, it is very suitable for use as an earthquake-resistant structural material. At the same time, the behavior of high-strength steel-fiber concrete has also investigated, one of which is about confined high-strength steel-fiber concrete. Analytical models of confined high-strength steel fiber concrete have been developed in various preliminary studies, with their characteristics derived based on the experimental results. Therefore, this research evaluated the models of confined high-strength steel-fiber concrete proposed by Mansur et al., Hsu and Hsu, and Paultre et al. The evaluation includes stress-strain behavior, strength enhancement of confined concrete (f'cc/f'co) or K value, the increase in confined concrete strain (ε'cc/ε'co), and strain of confined concrete when the stress has dropped by 50 percent against its unconfined strain (εcc50c50). The comparison method was carried out using a statistical approach and stress-strain simulation. Evaluation results showed significant predictive differences in confinement models in terms of post-peak behavior and parameters ε'cc/ε’co and εcc50c50. Prediction of confinement models on the value of f'cc/f’co to the experimental results has a coefficient of variation above 10%. The result further showed that a modified model of confined high-strength steel-fiber concrete was proposed and able to simulate the stress-strain behavior.Since the last four decades, the behavior of concrete contains of steel fiber, or often called steel fiber concrete, with a w
ide
range of compressive strength has been carried out. Generally, the results of the experimental program
produced a material which has
a more ductile compared with normal concrete or concrete without fiber. Due to the ductility properties of the material, it i
s very suitable
for use as an earthquake
-
resistant structural material. At the same time, the behavio
r of high
-
strength steel
-
fiber concrete has also inves-
tigated, one of which is about confined high
-
Kata kunci :

-->
Kategori : Jurnal Nasional Terakreditasi
Nama Jurnal : Journal of the Civil Engineering Forum
ISSN : 2549-5925
Volume : 8
Nomor : 3
Halaman : 309 s/d 320
Tahun : 2022
Peneliti : Nur Fithriani F. Cholida, Lintang Enggartiasto, Antonius,,
Diunggah Tanggal : Minggu, 2022-07-31