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http://dx.doi.org/10.14190/JRCR.2022.10.3.204

Carbonation Resistance Property of Mortar using Electrolysis Aqueous  

Jeong, Su-Mi (Department of Architecture, Mokwon University)
Park, Sun-Gyu (Department of Architecture, Mokwon University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.3, 2022 , pp. 204-210 More about this Journal
Abstract
Cement is pointed out as the main cause of carbon dioxide emission in the construction industry. Many researchs are underway to use blast furnace slag, an industrial by-product, as a substitute for cement to reduce carbon dioxide emitted during the manufacturing the cement. When blast furnace slag is used as a substitute for cement, it has advantages such as long-term strength and chemical resistance improvement. However, blast furnace slag has a problem that makes initial strength low. This is due to the impermeable film on the surface created during the production of blast furnace slag. The created film is known to be destroyed in an alkaline environment, and based on this, previous studies have suggested a solution using various alkali activators. But, alkali activator is dangerous product since it is a strong alkaline material. And it has the disadvantage in price competitiveness. In this study, an experiment was conducted to improve the initial hydration reactivity of the blast furnace slag to secure the initial strength of the mortar substituted with the blast furnace slag and to check whether the carbonation resistance was increased. As a result of the experiment, it was confirmed that the mortar using alkaline water showed higher strength than the mortar using tap water, and there were more hydration products generated inside. In addition, it was confirmed that the mortar using alkaline water as a compounding water had high carbonation resistance.
Keywords
Ground granulated blast furnace slag; Electrolysis alkaline aqueous; Hydration react; Carbonation resistance;
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Times Cited By KSCI : 9  (Citation Analysis)
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