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Title |
A Study on Strategies for Establishing Korean Portland Limestone Cement Standards Based on an Expert Survey
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Authors |
강인규(In-Gyu Kang) ; 김건우(Geon-Woo Kim) ; 이진우(Jin-Woo Lee) ; 강남규(Nam-Gyu Kang) ; 신상철(Sang-Chul Shin) ; 김진만(Jin-Man Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2026.38.2.191 |
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Keywords |
소중립; 포틀랜드 석회석 시멘트; 설문조사; CaCO3 순도; 압축강도 carbon neutrality; Portland limestone cement; survey; CaCO3 purity; compressive strength |
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Abstract |
A survey was conducted among 337 experts from the cement and concrete industries to assess industry perspectives on establishing a Korean standard for Portland Limestone Cement (PLC), aimed at reducing CO2 emissions by utilizing limestone as a supplementary cementitious material (SCM). The survey addressed key topics related to standardization, including the necessity of a PLC standard, required limestone quality parameters (CaCO3 purity, clay content, TOC, and fineness), allowable limestone replacement levels, classification criteria based on strength and limestone content, and essential physical and chemical performance requirements. The results showed that more than 70% of respondents support the establishment of a Korean PLC standard and generally hold positive views on increasing limestone usage. However, concerns regarding potential reductions in strength and durability remain significant, with CaCO3 purity, limestone content, and compressive strength identified as critical factors for ensuring quality stability. The expert insights obtained in this study are expected to serve as valuable technical and regulatory reference data for the future development of Korean PLC standards.
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