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http://dx.doi.org/10.6111/JKCGCT.2012.22.3.152

Characteristics of geopolymer based on recycling resources  

Kim, Yoo-Teak (Department of Materials Engineering, Kyonggi University)
Kim, Hyun-Jung (Department of Materials Engineering, Kyonggi University)
Jang, Chang-Sub (Department of Materials Engineering, Kyonggi University)
Abstract
In this study, geopolymer was prepared with reject ash and blast furnace slag using NaOH as an alkali activator and water glass. The aim of this study was to investigate the compressive strength variation according to the contents of NaOH and water glass and replacement ratio of reject ash (RA) and blast furnace slag (BS). The compressive strength measured after 28 days was 38.91 MPa for the geopolymer which consist of 100 % of BS with 1 wt% NaOH and 3 wt% water glass. The major factor for improving compressive strength was the alkali activator proportion and the replacement ratio of RA and BS.
Keywords
Geopolymer; Reject ash; Blast furnace slag; Alkali activator; Water glass; Sodium hydroxide; Compressive strength;
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