Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early Strength Additives Preparation Method and Early Strength Concrete
The present invention relates to an early-strength additive and an early-strength concrete composition using the same. According to the present invention, calcium silicate dispersion liquid particles are ground to the nano level, and thus it is possible to contribute to the improvement of the early compressive strength of a concrete composition. The present invention provides an early-strength additive preparation method including: (a) a step of preparing a calcium silicate dispersion liquid with a specific surface area of particles of 0.2 to 0.3 m^2/g by stirring 0.5 to 2 parts by weight of sodium hydroxide, 2 to 4 parts by weight of sodium silicate, and 2.5 to 5.2 parts by weight of calcium nitrate with respect to 100 parts by weight of water; (b) a step of performing stirring with 5 to 10 parts by weight of a polycarboxylate-based admixture further added to the calcium silicate dispersion liquid; and (c) a step of performing grinding with a wet nano liquid grinder for the specific surface area of the particles to reach 20 to 30 m^2/g.
본 발명은 규산칼슘 분산액의 입자를 나노 수준으로 분쇄하여 콘크리트 조성물의 조기 압축강도 향상에 기여하는 조강 첨가제 및 이를 이용한 조강성 콘크리트 조성물에 관한 것이다. 본 발명은 「(a) 물 100중량부 대비 수산화나트륨 0.5~2중량부, 규산나트륨 2~4중량부, 질산칼슘 2.5~5.2중량부를 교반하여 입자의 비표면적이 0.2~0.3㎡/g인 규산칼슘 분산액을 제조하는 단계; (b) 상기 규산칼슘 분산액에 폴리카르복실레이트계 혼화제 5~10중량부를 더 첨가하여 교반하는 단계; 및 (c) 습식나노액상분쇄장치로 상기 입자의 비표면적이 20~30㎡/g이 되도록 분쇄하는 단계; 를 포함하는 조강 첨가제 제조 방법」을 제공한다.
Early Strength Additives Preparation Method and Early Strength Concrete
The present invention relates to an early-strength additive and an early-strength concrete composition using the same. According to the present invention, calcium silicate dispersion liquid particles are ground to the nano level, and thus it is possible to contribute to the improvement of the early compressive strength of a concrete composition. The present invention provides an early-strength additive preparation method including: (a) a step of preparing a calcium silicate dispersion liquid with a specific surface area of particles of 0.2 to 0.3 m^2/g by stirring 0.5 to 2 parts by weight of sodium hydroxide, 2 to 4 parts by weight of sodium silicate, and 2.5 to 5.2 parts by weight of calcium nitrate with respect to 100 parts by weight of water; (b) a step of performing stirring with 5 to 10 parts by weight of a polycarboxylate-based admixture further added to the calcium silicate dispersion liquid; and (c) a step of performing grinding with a wet nano liquid grinder for the specific surface area of the particles to reach 20 to 30 m^2/g.
본 발명은 규산칼슘 분산액의 입자를 나노 수준으로 분쇄하여 콘크리트 조성물의 조기 압축강도 향상에 기여하는 조강 첨가제 및 이를 이용한 조강성 콘크리트 조성물에 관한 것이다. 본 발명은 「(a) 물 100중량부 대비 수산화나트륨 0.5~2중량부, 규산나트륨 2~4중량부, 질산칼슘 2.5~5.2중량부를 교반하여 입자의 비표면적이 0.2~0.3㎡/g인 규산칼슘 분산액을 제조하는 단계; (b) 상기 규산칼슘 분산액에 폴리카르복실레이트계 혼화제 5~10중량부를 더 첨가하여 교반하는 단계; 및 (c) 습식나노액상분쇄장치로 상기 입자의 비표면적이 20~30㎡/g이 되도록 분쇄하는 단계; 를 포함하는 조강 첨가제 제조 방법」을 제공한다.
Early Strength Additives Preparation Method and Early Strength Concrete
조강 첨가제 제조 방법 및 조강성 콘크리트 조성물
YOON SEOB (Autor:in) / KIM KANG MIN (Autor:in) / LEE HYUN SEUNG (Autor:in) / BYEON JU HEE (Autor:in) / CHOI JIN HO (Autor:in) / BAEK INSANG (Autor:in) / YANG HOON (Autor:in) / KIM KYUNG SU (Autor:in) / SUNG WONSUK (Autor:in)
23.11.2020
Patent
Elektronische Ressource
Koreanisch
IPC:
C04B
Kalk
,
LIME
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