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http://dx.doi.org/10.5345/JKIBC.2019.19.5.391

Properties of Lean Mixed Mortar with Various Replacement Ratio of Coal Gasification Slag  

Park, Kyung-Taek (Department of Architectural Engineering, Cheong ju University)
Han, Min-Cheol (Department of Architectural Engineering, Cheong ju University)
Hyun, Seung-Yong (Department of Architectural Engineering, Cheong ju University)
Publication Information
Journal of the Korea Institute of Building Construction / v.19, no.5, 2019 , pp. 391-399 More about this Journal
Abstract
This study reviewed the possibility of recycling into exhausted aggregate resources in Korea as a means of utilizing coal gasification slag(CGS) from integrated gasification combined cycle(IGCC) while being commissioned in order to introduce the new system to Korea. In other words, in order to solve the problem of insufficient aggregate resources, CGS generated by IGCC as a residual aggregate for concrete secondary products, which is an empty mortar, was considered to replace CGS in the range of 0 to 100 % for mixed residual aggregate mixed with crushed sand A(CSa) of good quality and sea sand(SS) of deep particles, which are the most commonly used in the domestic construction industry. According to the study, replacing CGS with CSa or crushed sand B(CSb)+SS by 25 % to 50 % resulted in good results in the aspect of the granularity of the aggregate and the workability and compressive strength of cement mortar, which were found to be usable.
Keywords
integrated gasification combined cycle; coal gasification slag; poor mortar; mixed aggregate; fine aggregate;
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