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http://dx.doi.org/10.7844/kirr.2017.26.3.32

Effect of Pretreatment of Mine Tailings on the Performance of Controlled Low Strength Materials  

Tafesse, Million (School of Architecture, Chosun University)
Kim, Hyeong-Ki (School of Architecture, Chosun University)
Publication Information
Resources Recycling / v.26, no.3, 2017 , pp. 32-38 More about this Journal
Abstract
For the massive recycling of mine tailings, which are an inorganic by-product of mining process, in the field of civil engineering, pretreatments to extract heavy metals are required. This study focuses on the use of pre-treated tailings as substitute fillers for controlled low-strength material (CLSM). As a comparative study, untreated tailing, microwave-treated tailing and magnetic separated with microwaved tailing were used in this study. Cement contents amounting to 10%, 20% and 30% by the weight of the tailings were designed. Both compressive strength and flowability for all types of mixture were satisfied with the requirements of the American Concrete Institute (ACI) Committee 229, i.e., 0.3-8.3 MPa of compressive strength and longer than 200 mm flowability. Furthermore, all mixtures showed settlements less than 1% by volume of the mix.
Keywords
Tailing; Controlled low-strength material (CLSM); Microwave; Magnetic separation; Flowability; Settlement; Compressive strength;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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