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http://dx.doi.org/10.14190/JRCR.2021.9.1.26

Investigation on Fire Resistance of Mortar Made of Powder Type Sericite  

Park, Ji-Yeon (Department of Architectural Engineering, Pukyong National University)
Kim, So-I (Department of Architectural Engineering, Pukyong National University)
Kim, Seong-Ha (Department of Architectural Engineering, Pukyong National University)
Lee, Jae-Yong (Division of Architectural and Fire Protection Engineering, Pukyong National University)
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. 26-32 More about this Journal
Abstract
Powder type sericite has been actively researched in the area of chemistry and mineralogy in terms of waste recycling. It is a material that can be obtained relatively inexpensively with a low thermal conductivity like general mica, so in order to improve the thermal conductivity of the mortar, powder type sericite was used in this work. Compressive strengths of mortar before and after high temperature exposure were compared and evaluated to determine the fire resistance of mortar with powder type sericite. According to the experimental results, it was found that the compressive strength decreased when powder type sericite was replaced with cement, but the decrease in compressive strength with the increasing amount of powder type sericite was insignificant. When powder type sericite was incorporated, the thermal conductivity decreased, and the residual strengths of the mortar specimens which were heat treated at 600℃, 900℃, and 1,200℃ were higher than that of plain mortar. From the comprehensive evaluation of the experimental results, it can be concluded that the powder type sericite has the potential to be used as a refractory material for cement composites.
Keywords
Sericite; Powder; Heat treatment; Thermal conductivity; Residual strength;
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Times Cited By KSCI : 1  (Citation Analysis)
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