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http://dx.doi.org/10.5345/JKIBC.2021.21.4.305

A Sugeestion of Rheological Performance Range for Manufacturing Mid-workability Concrete  

Lee, Yu-Jeong (Department of Architectural Engineering, Gyeongsang National University)
Lee, Young-Jun (Department of Architectural Engineering, Gyeongsang National University)
Han, Dong-Yeop (Department of Architectural Engineering, and Engineering Reasearch Institute, Gyeongsang National University)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.4, 2021 , pp. 305-318 More about this Journal
Abstract
The aim of the research is providing the rheological performance range for manufacturing "mid-workability concrete". The mid-workability concrete means the normal strength range concrete mixture with high workability. Since there is not enough study or quantitative definitions on performance of the mid-workability concrete, in this research, the performance range for high workability of mid-workability concrete mixture using rheology. Because of the mixture characteristics of generally used normal strength concrete such as relatively high water-to-cement ratio and no SCMs, segregation of coarse aggregate should be prevent to achieve a successful high workability. From the experimental study in this research scope, 5 to 35 Pa.s of plastic viscosity was desirable to prevent segregation for nid-workability concrete, and general performance range with rheological parameters was provided.
Keywords
mid-workability concrete; rheology; segregation resistance; superplasticizer; rheology parameters;
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