| Title |
An Experimental Study of the Bond Performance on Reinforced Concrete Beams with Triple Nanomaterials in Lap Splices |
| Authors |
유진규(Jin-Gue Ryu) ; 손동희(Dong-Hee Son) ; 배백일(Baek-Il Bae) ; 유창기(Chang-Gi Yoo) ; 최창식(Chang-Sik Choi) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.10.235 |
| Keywords |
Lap-splice; Nanomaterial; Bond strength; Splice length |
| Abstract |
This study aims to assess the impact of combining triple hybrid reinforced concrete with carbon nanotubes, nanosilica, and graphene oxide on
bond strength. The mechanical properties of these materials were evaluated through material testing and assessed bond strength via lap-splice
experiments. The material testing revealed that nano-reinforced concrete had a slight increase in compressive strength compared to regular
concrete but showed a significant improvement in splitting tensile strength. It also exhibited decreased volumetric strain and Poisson's ratio.
To understand if these mechanical properties influenced bond strength, laboratory splice experiments were conducted using eight reinforced
concrete specimens, varying splice length and cover thickness. The results of the lap-splice experiment showed variations in bond strength
depending on the inclusion of nanomaterials in the mixture, with varying increases in bond strength as splice strength changed. This suggests
that the combination of these triple nanomaterials does impact the bond performance of concrete. |