[01] Cover Spalling Analysis of Reinforced Concrete Columns Made of High-Strength Materials
PIC: Bambang Piscesa
Co.: Dwi Prasetya
Description:
This research project objective is to study the cover spalling behavior of Reinforced Concrete (RC) columns made of high-strength materials.
High-Strength Concrete (HSC) is brittle and often the cover spalling occurs earlier than Normal-Strength Concrete (NSC). Some studies on cover
spalling behavior of RC column noted that there are several possible cause such as shrinkage, triaxial stress effect due to confinement,
buckling of the cover shell and formation of splitting cracks due to the presence of weak planes in the rebar. Here, the attention is focused
on the restrained shrinkage, difference in the plastic dilation rate between the concrete core and cover and the presence of weak planes as a
results of dense arrangement of the steel rebar. The analysis is carried out using 3D-NLFEA. This project is on-going at the moment.
Allocation:
- [Status: Closed - On Going]
[02] Numerical Investigation of the Behavior of Jacketed Reinforced Concrete Columns under Concentric Loading
PIC: Bambang Piscesa
Co.: Dwi Prasetya
Description:
This project investigate the behavior of jacketed reinforced concrete columns under concentric loading. The interest are in the extreme case,
where High-Strength-Concrete is used as the jacket material. The high differences of the concrete plastic dilation rate between the old concrete material
and the new jacket material may initiate tensile interfacial stress between the two concretes and may form a cracks if not confined properly.
Moreover, without the presence of this additional ties in the new jacket material, cover spalling behavior may occur at lower load than expected.
A wide range numerical simulation and comparison with the existing experimental results will be carried out in the study. Furthermore, extensive parametric
study to evaluate design code of practice are also carried out. The numerical simulation are performed using 3D-NLFEA. This project is on-going at the moment.
Allocation:
- [Status: Closed - On Going]