| Title |
A Study on the Fundamental and Heat of Hydration Properties of Fly Ash Replacement Concrete Mixed with Coal Gasification Slag for Fine Aggregate |
| Authors |
Han, Min-Cheol ; Choi, Il-Kyung |
| DOI |
https://doi.org/10.5659/JAIK_SC.2020.36.1.155 |
| Keywords |
Integrated gasification combined cycle; Coal gasification slag; Fly-ash; Hydration heat |
| Abstract |
The aim of the research is to investigate the fundamental properties and heat of hydration reducing performance of the fly ash incorporated
concrete mixture when the coal gas slag (CGS) from integrated gasification combined cycle (IGCC) is used as fine aggregate. From the
results of the experiment, the workability was generally increased and the air content was decreased up to one to four percent with
increasing the replacing ratio of CGS to fine aggregate. The compressive strength was similar or increased within five percent to the Plain
mixture when the CGS was used as a fine aggregate. When the CGS and fly ash were used same time, the heat of hydration reducing
performance was improved than single using cases either CGS or fly ash. Based on the results, for the concrete mixture using CSG as a
portion of the combined fine aggregate, the general properties were improved and heat of hydration was decreased approximately 16 % when
the fly ash was replaced 30 % to cement and the CGS was replaced less than 50 % to fine aggregate. |