concrete composition for ocean having salt-resistance

Provided is a salt-resistant marine concrete composition which has improved salt resistance, and thus can significantly increase the endurance life of a marine concrete structure constructed in a marine environment. To this end, the salt-resistant marine concrete composition comprises: Portland ceme...

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Bibliographische Detailangaben
1. Verfasser: PARK DONG CHEON
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:Provided is a salt-resistant marine concrete composition which has improved salt resistance, and thus can significantly increase the endurance life of a marine concrete structure constructed in a marine environment. To this end, the salt-resistant marine concrete composition comprises: Portland cement which hardens when mixed with water and contains calcium oxide, silicone dioxide, and aluminum oxide; blast furnace slag which has latent hydraulic activity, generates Friedel′s salt that has a reduced calorific value during a hydration reaction and fixes chloride ions during a hardening process, is mixed to increase long-term compressive strength of hardened concrete, and contains calcium oxide, silicon dioxide, aluminum oxide, and magnesium oxide; fly ash which has improved workability and relieved hardening heat, is mixed to have improved long-term compressive strength and water tightness due to a pozzolanic reaction, and contains silicon dioxide, aluminum oxide, and iron oxide and; reinforcing aggregates which contain fine aggregates and coarse aggregates and are mixed to increase the strength of hardened concrete; and an admixture which disperses particles of a mixture of the Portland cement, the blast furnace slag, the fly ash, and the reinforcing aggregates to provide fluidity thereto and which are to be mixed to inhibit corrosion occurring by chloride ions penetrating the concrete. 염해내구성이 개선되어 해양환경에 건설되는 해양 콘크리트 구조물의 내구수명이 현저히 증가되도록, 본 발명은 본 발명은 물과 혼합시 경화되며 산화칼슘, 이산화규소, 산화알루미늄이 함유된 포틀랜드 시멘트; 잠재수경성을 가지며 수화반응시 발열량이 저감되고 경화시 염화물이온을 고정하는 프리델씨염을 생성하며 경화 콘크리트의 장기압축강도가 증가되도록 혼합되며 산화칼슘, 이산화규소, 산화알루미늄, 및 산화마그네슘이 함유된 고로슬래그; 가공성이 개선되고 경화열이 완화됨과 동시에 포졸란 반응으로 장기 압축강도 및 수밀성이 향상되도록 혼합되며 이산화규소, 산화알루미늄, 및 산화철이 함유된 플라이애시; 경화된 콘크리트의 강도가 증가되도록 혼합되며 잔골재와 굵은골재를 포함하는 보강골재; 및 상기 포틀랜드 시멘트, 상기 고로슬래그, 상기 플라이애시, 및 상기 보강골재가 혼합된 혼합물의 입자를 분산시켜 유동성을 제공하며 콘크리트에 침투되는 염화물이온에 의한 부식이 억제되도록 혼합되는 혼화제를 포함하는 내염해성 해양 콘크리트 조성물을 제공한다.