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http://dx.doi.org/10.14190/JRCR.2021.9.1.58

Development of Autoclave Aerated Concrete Using Circulating Fluidized Bed Combustion Ash  

Lee, Chang Joon (Architectural Engineering, Chungbuk National University)
Song, Jeong-Hyun (ESEN Design&Tech)
Chung, Chul-Woo (Division of Architectural and Fire Protection Engineering, Pukyong National University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.1, 2021 , pp. 58-65 More about this Journal
Abstract
In this study, as a method to increase the recycling of circulating fluidized bed combustion ash(CFBCA), CFBCA was utilized to produce autoclave aerated concrete product since CFBCA contains quicklime and calcium sulfate components that are required for the manufacture of autoclave aerated concrete. Successful achievement of such objective will bring cost reduction with high value addition, saving of natural resources, and the reduction of environmental load. Various mixing designs were designed to evaluate the properties of autoclave aerated concrete made of CFBCA. Based on series of experimental program, prototypes mix design for factory manufacturing was obtained. According to the experimental results, it was confirmed that gypsum can be replaced with CFBCA through the method of pre-treating the CFBCA as a slurry. It was possible to produce competitive autoclave aerated concrete products using CFBCA.
Keywords
Circulating fluidized bed combustion ash; Autoclave aerated concrete; Compressive strength; Oven dry density;
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