| Title |
An Experimental Study on the Physical Property Change of High Strength Concrete for High-rise Building Before and After Concrete Pumping Transfer |
| Authors |
Ko Joo-Whan ; Kim Jung-Jin ; Lee Sang-Hyun ; Moon Hyung-Jae ; Park Soon-Jeon |
| Keywords |
Concrete Pumping ; High-strength Concrete ; Flowability ; Physical Property Change |
| Abstract |
High rise building requires high-strength concrete. These days high strength concrete is placed using concrete pump over 500m building. But high strength concrete pumping has a problem that physical property such as slump flow, air content can be changed after concrete pumping. This phenomenon makes concrete flowability and quality poor. So, in this study, 60, 70, 80MPa high strength concrete is placed over 570, 342, 228m pipeline and then physical property such as workability and air content were tested. As a result, physical property of concrete after pumping can be controlled with concrete mixture such as admixture type and content, And this result may be useful to those people who is going to place high-strength concrete to high-rise building with concrete pump. |