Evaluation of Pumping Characteristics of High Strength Concrete using Continuous Pumping System

Dae-Hun Kwon, Han-Seung Lee, Jun-Young Jeon, Woong-Taek Jeong, Ho-Kyoo Jo, Hyung-Rae Kim
2011 Journal of the Korea Institute of Building Construction  
In the construction of tall-building, concrete pumping influences the success of the project. In order to establish pumping technology for high speed construction of tall building, study for quantitative evaluation of flow characteristics and pumpability should be conducted. So in this study, the characteristics including the inner pipe pressure, rheological properties of concrete and mortar through the continuous pumping test were evaluated. Then we analyzed the relations between rheological
more » ... operties and pumpability. In the result of test, there are high correlations between the rheological characteristics which represented by yield stress and plastic viscosity and pressure loss with pipe length. Also, we estimated pressure loss according to conditions of concrete mix and pumping through the evaluation of inner pipe friction.
doi:10.5345/jkibc.2011.11.4.387 fatcat:2vmihehufrc27nsd6ruqf7umo4