Publisher : The Korea Association of Crystal Growth
DOI : 10.6111/JKCGCT.2015.25.6.257
Title & Authors
Properties of non-cement mortars with small addition of alkali activator using fly ash and fused waste slag Kim, Yootaek; Lee, Kyongwoo;
Recently the world wide efforts reduce occurrence of ; global warming main reason. The aim of this study is to improve recycling rate of the fly ash (FA) and fused waste slag (FWS) from the power plant and to carbonate under supercritical condition (, pressure, 60 min) for fixation. Specimens of mortar with various mixing ratios of FA, FWS (from 100:0 to 20:80 in 5 steps of 20 % reduction each time), distilled water and 3 M NaOH alkali activators were prepared. As a result, the proportion of weight change ratio increases with CaO content, to 12 % after carbonation under the supercritical condition. There is difference of compressive strength between the carbonated and the alkali activator mortar specimens. The stabilization of fixation through carbonation which could confirm the applicability of the eco-friendly materials without loss of compressive strength.
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