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A Preliminary Study on Alkali Activation of Waste Concrete Powder
사수이 ( Sasui Sasui ),김규용 ( Kim Gyu-yong ),유하민 ( Eu Ha-min ),이예찬 ( Lee Yae-chan ),편수정 ( Phyeon Su-jeong ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
In this study, the effects of NaOH and KOH alkali activators of various concentrations on the performance of alkali activated waste concrete powder (WCP) was discussed. The samples activated by alkaline solutions were cured for up to 28 days and then compressive strength test was performed. These samples were also characterized using various techniques to explore the phase evolution, and microstructural changes. Results showed superior performance of NaOH-activated WCP. Additionally, activation of WCP by 8M concentrated alkali solutions improved the strength, reactivity and microstructure of alkali activated WCP binder sample.
혼화재를 혼입한 순환유리잔골재 모르타르의 역학적 특성과 ASR 거동
유하민 ( Eu Ha-min ),김규용 ( Kim Guy-yong ),박준영 ( Park Jun-young ),사수이 ( Sasui Sasui ),최병철 ( Choi Byung-cheol ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.1
In this study, the mechanical properties, alkali-silica reaction(ASR) expansion and residual mechanical properties after ASR of waste glass fine aggregate(GS) mortar according to mineral mixture were evaluated. As a result, it was found that the mineral mixture reduces the ASR expansion. However, mechanical properties and residual mechanical properties have decreased.
폐유리 잔골재가 고강도 모르타르의 역학적 특성 및 알칼리-실리카 반응(ASR), ASR 후, 잔류 역학적 특성에 미치는 영향
유하민 ( Eu Ha-min ),김규용 ( Kim Gyu-yong ),손민재 ( Son Min-jae ),사수이 ( Sasui Sasui ),이예찬 ( Lee Yae-chan ),남정수 ( Nam Jeong-soo ) 한국건축시공학회 2020 한국건축시공학회 학술발표대회 논문집 Vol.20 No.2
This study measured the mechanical performance and residual strength of high strength/normal strength mortar mixed with waste glass fine aggregate after alkali-silica reaction and alkali-silica reaction. As a result, the effect of improving the slip phenomenon of the waste glass fine aggregate in the high-strength mortar was not significant, but rather the amount of ASR was increased.