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A platform for research: civil engineering, architecture and urbanism
Waste glass fine aggregate surface modification method Surface modified waste glass fine aggregate
The present invention relates to a method for surface modification of fine waste glass aggregate, capable of reducing alkali-silica reaction and slip phenomenon between aggregate and matrix by fine waste glass aggregate, and surface-modified waste glass fine aggregate prepared by the method and coated with C-S-H crystals on the surface thereof. The method includes: a step (a) of converting an amorphous silica component on a surface into an alkali silicate gel by immersing waste glass fine aggregate in an aqueous solution of NaOH; and a step (b) of immersing the waste glass fine aggregate having passed through the step (a) in a supersaturated CaO aqueous solution to modify the alkali silicate gel formed on the surface into a C-S-H crystal. According to the present invention, slipping can be reduced.
본 발명은 폐유리 잔골재에 의한 알칼리-실리카 반응 및 골재-매트릭스 간 슬립 현상을 저감시킬 수 있는 폐유리 잔골재 표면 개질 방법 및 그 방법에 의해 제조되어 표면에 C-S-H 결정질이 코팅된 표면개질 폐유리 잔골재에 관한 것이다. 본 발명은 「(a) 폐유리 잔골재를 NaOH 수용액에 침지하여 표면의 비정질 실리카 성분을 알칼리실리케이트 겔로 변환시키는 단계; 및 (b) 상기 (a)단계를 거친 폐유리 잔골재를 과포화 상태의 CaO 수용액에 침지하여 표면에 생성된 알칼리실리케이트 겔을 C-S-H 결정질로 개질시키는 단계; 를 포함하는 폐유리 잔골재 표면 개질 방법」을 제공한다.
Waste glass fine aggregate surface modification method Surface modified waste glass fine aggregate
The present invention relates to a method for surface modification of fine waste glass aggregate, capable of reducing alkali-silica reaction and slip phenomenon between aggregate and matrix by fine waste glass aggregate, and surface-modified waste glass fine aggregate prepared by the method and coated with C-S-H crystals on the surface thereof. The method includes: a step (a) of converting an amorphous silica component on a surface into an alkali silicate gel by immersing waste glass fine aggregate in an aqueous solution of NaOH; and a step (b) of immersing the waste glass fine aggregate having passed through the step (a) in a supersaturated CaO aqueous solution to modify the alkali silicate gel formed on the surface into a C-S-H crystal. According to the present invention, slipping can be reduced.
본 발명은 폐유리 잔골재에 의한 알칼리-실리카 반응 및 골재-매트릭스 간 슬립 현상을 저감시킬 수 있는 폐유리 잔골재 표면 개질 방법 및 그 방법에 의해 제조되어 표면에 C-S-H 결정질이 코팅된 표면개질 폐유리 잔골재에 관한 것이다. 본 발명은 「(a) 폐유리 잔골재를 NaOH 수용액에 침지하여 표면의 비정질 실리카 성분을 알칼리실리케이트 겔로 변환시키는 단계; 및 (b) 상기 (a)단계를 거친 폐유리 잔골재를 과포화 상태의 CaO 수용액에 침지하여 표면에 생성된 알칼리실리케이트 겔을 C-S-H 결정질로 개질시키는 단계; 를 포함하는 폐유리 잔골재 표면 개질 방법」을 제공한다.
Waste glass fine aggregate surface modification method Surface modified waste glass fine aggregate
폐유리 잔골재 표면 개질 방법 및 표면개질 폐유리 잔골재
KIM GYUYONG (author) / NAM JEONGSOO (author) / CHOE GYEONGCHEOL (author) / LEE SANGKYU (author) / HWANG EUICHUL (author) / SON MINJAE (author) / SUH DONGKYUN (author) / EU HAMIN (author) / LEE YAECHAN (author) / LEE HANSEUNG (author)
2022-08-04
Patent
Electronic Resource
Korean
IPC:
C04B
Kalk
,
LIME
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