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J. Korean Ceram. Soc. > Volume 45(7); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(7): 395.
doi: https://doi.org/10.4191/kcers.2008.45.7.395
저급규석을 활용한 Fly Ash 지오폴리머 모르타르 제조 및 특성
손세구, 홍승엽, 김영도
거화이에스알 기술연구소
Preparation and its Characteristics of Fly Ash-based Geopolymeric Mortar using Low Grade Silica Waste
Se-Gu Son, Seung-Yeob Hong, Young-Do Kim
GEOHWA E.S.R Research Center
ABSTRACT
This paper indicates the investigation about the development of ET (Environmental Technology) industrial geopolymeric materials from mixture silica mine waste, coal fly ash and alkali activator solution (sodium silicate) by the geopolymer technique at ambient temperature. The results showed that higher compressive strength of geopolymeric mortar increased with a reduce of L/S ratio and increased along with an increase of coal fly ash content. The compressive strengths of geopolymer mortar on low silica of C Silica Mine and K Silica Mine are 18.7 MPa, 20.4 MPa, respectively. Compressive strength of geopolymeric mortar depends on L/S ratio and coal fly ash content added.. Additionally, scanning electron microscope (SEM) techniques are used to characterize the microstructure of the geopolymeric mortars. SEM observation shows that it is possible to have amorphous aluminosilicate gel within mortar. XRD patterns indicate the fact that geopolymeric mortar is composed of amorphous aluminosilicate phase, calcite and quartz.
Key words: Geopolymeric mortar, Silica waste, Fly ash, Amorphous phase
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