$CO_2$ uptake and physicochemical properties of carbonation-cured ternary blend Portland cement-metakaolin-limestone pastes탄산화 양생된 포틀랜드 시멘트-메타카올린-석회석 3성분계 시멘트 페이스트의 $CO_2$ 흡착성능과 물리화학적 특성에 대한 실험적 연구

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The feasibility of carbonation curing of ternary blend Portland cement-metakaolin-limestone was investigated. The ternary blend Portland-metakaolin-limestone pastes present a high replacement of Portland cement exhibiting good mechanical and durability performance. Carbonation curing was coupled with this blend to achieve ecofriendly binder. Portland cement was substituted with combinations of metakaolin and limestone at 15%, 30%, and 45% by mass, and exposed to four different combinations of ambient curing and carbonation curing. Carbonation durations were varied as 6 hours, 13 days and 27 days. The mechanical strength, $CO_2$ uptake and mineralogical variations were investigated by means of compressive strength test, thermogravimetric analysis, and X-ray diffractometry. Volume of permeable voids and sorptivity were presented to provide a fundamental idea of this blends. Results showed that the ternary blend Portland cement-metakaolin-limestone systems enhanced the $CO_2$ uptake by increasing the porosity of the system. The blends of up to 15 wt.% replacement with metakaolin and limestone showed comparable mechanical strength to OPC, proving that this system can be a viable option toward the development of ecofriendly binders.
Advisors
Lee, Haeng-Kiresearcher이행기researcher
Description
한국과학기술원 :건설및환경공학과,
Publisher
한국과학기술원
Issue Date
2020
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 건설및환경공학과, 2020.8,[iv, 48 p. :]

Keywords

carbonation curing▼aternary blend▼a$CO_2$ uptake▼aPortland cement▼alimestone▼ametakaolin; 탄산화 양생▼a삼성분계 혼합물▼a$CO_2$ 흡착▼a포틀랜드 시멘트▼a석회석▼a메타카올린

URI
http://hdl.handle.net/10203/285020
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=925181&flag=dissertation
Appears in Collection
CE-Theses_Master(석사논문)
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