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http://dx.doi.org/10.14190/JRCR.2018.6.4.304

Influence of Rheological Properties of Lightweight Foamed Concrete on Preventing Foam Collapse  

Lee, Hyang-Sun (Department of Architectural Engineering, Gyeongsang National University)
Jeon, Jong-Woon (Department of Architectural Engineering, Gyeongsang National University)
Jo, Mujin (Department of Architectural Engineering, Dong-A University)
Kee, Seong-Hoon (Department of Architectural Engineering, Dong-A University)
Han, Dongyeop (Department of Architectural Engineering, and Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.6, no.4, 2018 , pp. 304-310 More about this Journal
Abstract
The aim of the research is to provide possibility of quality controlling by rheological properties for lightweight foamed concrete. The lightweight foamed concrete achieves its low density by containing air bubbles (foam) produced during the mixing process. Therefore, containing foamed volume during setting period is critical for the securing the performance as an insulating material. In this research, regarding foam collapse during the setting period, rheolgocial properties of fresh state lightweight foamed concrete were assessed to get its relationship with volume stability, or foam stability. For the experiment regarding foaming factors including mixing time, mix design of contents for materials, rheological properties of fresh state lightweight foamed concrete were tested with its density and settling depth. Based on the settling depth with various factors, relationship with rheological properties was analyzed, and especially, close relationship of plastic viscosity and settling depth was found. Therefore, from the results of this research, it is considered to contribute on suggesting a new approach of quality controlling for lightweight foamed concrete using rheological test method.
Keywords
Lightweigth foamed concrete; Foam stability; Settlement; Rheological properties; Plastic viscosity;
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  • Reference
1 Choi, M.I., Lee, H.S. (2015). "Literature study on the improvement of lightweight concrete in perspective of foaming agent," Proceeding of the Korea Institute of Building Construction 15(2), 141-142 [in Korean].
2 Jeong, J.Y., Pack, H.J. (2011), "Properties of Foamed Concrete according to type of surfactant and unit volume of foam," Proceeding of the Korea Concrete Institute, 491-492 [in Korean].
3 Jung, S.C., Kim, B.S. (1998), A study on the mixing design of lightweight cellular concrete for on-dol system, Journal of the Architectural institute of Korea Structure & Construction, 14(12), 83-92 [in Korean].
4 Kim, J.H., Yun, J.H. (1996), Air-entraining agents and water-reducing admixtures, Magazine of the Korea Concrete Institute, 8(2), 13-19 [in Korean].   DOI
5 Kim, J.M, Jeong, J.Y. (2012), Properties of foamed concrete according to types and concentrations of foam agent, Journal of the Korea Concrete Institute, 24(1), 61-70 [in Korean].   DOI
6 Kim, J.M., Kwak, E.G. (2011). Properties of bubble according to types and concentrations of concrete foaming agent, Journal of the Korea Concrete Institute, 23(2), 151-158 [in Korean].   DOI