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http://dx.doi.org/10.12814/jkgss.2018.17.2.019

Controlled Low Strength Material for Emergency Restoration Using Bottom Ash and Gypsum  

Lee, So-Yeon (Department of Railroad Construction and Safety Engineering, Dongyang Univ.)
Yoon, Hwan-Hee (Department of Railroad Construction and Safety Engineering, Dongyang Univ.)
Son, Min (Department of Railroad Construction and Safety Engineering, Dongyang Univ.)
Kong, Jin-Young (Geotechnical Engineering Research Division, Korea Institute of civil engineering and building technology)
Jung, Hyuk-Sang (Department of Railroad Construction and Safety Engineering, Dongyang Univ.)
Publication Information
Journal of the Korean Geosynthetics Society / v.17, no.2, 2018 , pp. 19-31 More about this Journal
Abstract
Recently the ground subsidence which seriously weakens the safety of cities tends to increase. The purpose of this paper is to develop the materials by using industrial by-products for the application to emergency restoration process in case of ground subsidence. In this paper the laboratory tests including pH test, initial setting test, unconfined compressive strength test, and flow test were performed in order to evaluate the design properties of Controlled Low Strength Material (CLSM). The field test was carried out for evaluating the performance for the early strength of CLSM and the workability for emergency restoration. Test results showed that the strength will be too high to re-excavate the ground when the cement ratio is more than 4%. The optimum mixing ratio appears to be most effective when the mixing ratio of the bottom ash and the gypsum is approximately 50:50 and the cement content is 2%.
Keywords
Controlled low strength material; Bottom ash; Gypsum; Emergency restoration; Field test;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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