Abstract
This study aims to investigate the bond-slip behaviour between shaped steel and polyvinyl alcohol (PVA) fibre-reinforced concrete, a critical aspect affecting the structural performance of steel-concrete composite structures. The experiment on 14 specimens, considering various parameters such as concrete strength, cover thickness, anchorage length, PVA fibre volume, and the presence of shear studs were conducted. A novel experimental method was devised to analyse the bond-slip characteristics between shaped steel and PVA fibre concrete. All specimens exhibited failure due to the bond between shaped steel and concrete. The load-slip curve exhibited four distinct stages: the initial stage, slip stage, descending stage, and horizontal residual stage. Notably, the addition of PVA fibre significantly enhanced the load-bearing capacity, with optimal performance observed at a fibre volume of 8 kg/m3, surpassing conventional concrete bond strength. Moreover, increasing PVA concrete strength, anchorage length, and the use of shear studs were found to augment the bond strength. To further understand this bond-slip behaviour, a constitutive model correlating bond strength with characteristic slip values was developed, and it aligns well with experimental results, validating its accuracy and applicability.
| Original language | English |
|---|---|
| Pages (from-to) | 313-330 |
| Number of pages | 18 |
| Journal | Steel and Composite Structures |
| Volume | 54 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 25 Feb 2025 |
Keywords
- bond strength
- bond-slip constitutive model
- push-out test
- PVA fiber concrete
- shape steel
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Metals and Alloys