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http://dx.doi.org/10.9719/EEG.2022.55.6.649

Physical Properties of Major Bedrocks in Chungju-Goesan Area as Aggregates  

Byoung-Woon You (Department of Astronomy, Space Science and Geology, Chungnam National University)
Jaehyung Yu (Department of Astronomy, Space Science and Geology, Chungnam National University)
Publication Information
Economic and Environmental Geology / v.55, no.6, 2022 , pp. 649-659 More about this Journal
Abstract
This study examined the granite, quartzite, phyllite, schist, and gneiss as aggregate resources among the original rock distributed in the Chungju-Goesan area. The granite distributed in the study area is mainly composed of Jurassic biotite granite, and the quartzite layer is from the Daehyangsan quartzite Formation distributed on the upper part of the Gyemyeongsan Formation and the Hyangsan-ri dolomitic limestone Formation. In addition, phyllite is pophyrytic phyllite-schist from the Hwanggangri Formation of the Okcheon group, schist is chlorite schist, from the Munjuri Formation of the Okcheon group, and gneiss is porphyroblastic gneiss which is the upper part of the Seochangri Formation. Aggregate quality evaluation factors of these rocks included fineness modulus, absorption, unit weight, absolute dry density, solid content, porosity, resistance to abrasion, and soundness. In the case of granite, it was found to be partially unsatisfactory in terms of unit weight, solid content, porosity, and resistance to abrasion. Gneiss was found to be out of the standard values in resistance to abrasion and schist in porosity and solid content. As for the overall quality of aggregate resources, it was analyzed that quartzite, gneiss, and phyllite showed excellent quality. Aggregate quality tests are performed simply for each rock, but the rock may vary depending on the morphology of the mineral. Therefore, when analyzing and utilizing the quality evaluation of aggregate resources, it will be possible to use them more efficiently if the rock-mineralological research is performed together.
Keywords
aggregate; rock type; physical properties; aggregate quality;
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Times Cited By KSCI : 7  (Citation Analysis)
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