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http://dx.doi.org/10.14481/jkges.2016.17.10.23

Development and Assessment of Laboratory Testing Apparatus on Grouting Injection Performance  

Jin, Hyunwoo (Department of Geospace Engineering, University of Science & Technology)
Ryu, Byunghyun (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Lee, Jangguen (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Department of Geospace Engineering, University of Science & Technology)
Publication Information
Journal of the Korean GEO-environmental Society / v.17, no.10, 2016 , pp. 23-31 More about this Journal
Abstract
Grout is generally operated with low viscous material similar to water, but grout for micro crack with high viscous materials and high injection pressure is gradually increased under the development of underground and subsea space. In order to estimate grouting injection performance considering crack width, viscosity of grouting materials, and injection pressure, there should be a reliable standard laboratory testing method. In this paper, theoretical injection mechanisms of grouting materials are presented as radial and linear flows, and laboratory testing apparatus are introduced to simulate each flow case. Radial flow is simulated by using acrylic disk plates which are able to spread grouting material radially from the center of the disk plates, and linear flow is simulated by using stainless parallel plane plates which are able to spread grouting material linearly. Apparatus are consist of upper and lower plates and industrial films with different thickness are placed between plates in order to simulate various crack widths. Laboratory verification tests with these apparatus were conducted with tap water (1cP at $20^{\circ}C$) as an injection material. Through the laboratory testing results, the best laboratory testing method is recommended in order to estimate grouting injection performance.
Keywords
Grout; Viscous material; Viscosity; Micro crack; Laboratory testing; Injection performance;
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Times Cited By KSCI : 1  (Citation Analysis)
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