| Title |
An Experimental Study on the Improvement of Structural Performance for Concrete Structure Spraying Composite Polyurea |
| Authors |
Cho, Dong-Ho ; Kim, Jin-Bong ; Kim, Tae-Wan ; Eun, Hee-Chang |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.1.21 |
| Keywords |
elastomer ; polyurea ; toughness ; ductility ; lateral confinement |
| Abstract |
This study investigates the applicability of composite polyurea to contain fiber reinforcement like fiber glass, steel fiber and carbon nanotube. Polyurea as elastomer is an excellent water-proofing material with many mechanical characteristics such as high tensile strength, ductility, high rate of expansion and contraction, and so on. The reinforcing fibers can be utilized for improving the load-carrying capacity of concrete structures. The polyurea plays a role to improve the ductility and toughness. Composite polyurea takes the mechanical advantages of the fibers and the polyurea. The test variables include the type of reinforcing fiber, its spraying thickness, and its weight ratio contained in the composite polyurea. It is observed that the load-carrying capacity, and the ductility and toughness are improved with the increase in the spraying thickness and the weight ratio contained in the composite polyurea. It is expected that the composite polyurea can be widely utilized in enhancing the structural and seismic performance. |