A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fast Curing Concrete Composition And Method For Repairing And Rehabilitating Road Pavement thereof
A fast curing concrete composition of the present invention includes 10 to 30 wt% of fast-curing cement, 30 to 50 wt% of fine aggregate, 30 to 50 wt% of coarse aggregate, 3 to 10 wt% of a resin, 0.02 to 0.2 wt% of a retardant, and 0.4 to 5 wt% of water, and is mixed with hydrated citric acid having a purity of 95 to 98% as a retarder. It is preferable that fast-curing cement, based on the weight of the fast-curing cement, comprises: 0.01 to 0.1 parts by weight of limestone; 0.02 to 0.1 parts by weight of steel slag; 0.1 to 0.4 parts by weight of cement; 0.2 to 0.4 parts by weight of calcium sulfoaluminate (CSA); 0.1 to 0.4 parts by weight of anhydrite; 0.001 to 0.01 parts by weight of a curing accelerator; and 0.001 to 0.01 parts by weight of a curing retardant. At this time, limestone has an average particle diameter of 1 to 30 μm. It is preferable that the steel slag, based on the weight of the steel slag, comprises: 0.3 to 0.6 parts by weight of CaO; 0.2 to 0.4 parts by weight of Al_2O_3; 0.05 to 0.15 parts by weight of SiO_2; and 0.01 to 0.1 parts by weight of MgO and has a fineness of 4,000 to 8,000 cm^2/g. Accordingly, the initial strength is excellent.
본 발명인 초속경 콘크리트 조성물은 속경성 시멘트 10~30 중량% 잔골재 30~50 중량%; 굵은골재 30~50 중량%; 수지 3~10 중량%; 지연제 0.02~0.2 중량%; 물 0.4 ~ 5 중량%;를 포함하고, 지연제로 순도가 95~98%인 함수구연산이 혼합된다.속경성 시멘트는 속경성 시멘트의 중량을 기준으로, 석회석 0.01~0.1 중량부; 제강슬래그 0.02~0.1 중량부; 시멘트 0.1~0.4 중량부; 칼슘설포알루미네이트(Calcium Sulfo Aluminate, CSA) 0.2~0.4 중량부; 무수석고 0.1~0.4 중량부; 경화촉진제 0.001~0.01 중량부; 경화지연제 0.001~0.01 중량부;를 포함하는 것이 바람직하다.이때 석회석은 평균입경은 1~30㎛ 이다. 제강슬래그는 제강슬래그의 중량을 기준으로, CaO 0.3~0.6 중량부; Al2O3 0.2~0.4 중량부; SiO2 0.05~0.15 중량부; MgO 0.01~0.1 중량부;를 포함하되, 4,000~8,000 ㎠/g의 분말도를 갖는 것이 바람직하다.
Fast Curing Concrete Composition And Method For Repairing And Rehabilitating Road Pavement thereof
A fast curing concrete composition of the present invention includes 10 to 30 wt% of fast-curing cement, 30 to 50 wt% of fine aggregate, 30 to 50 wt% of coarse aggregate, 3 to 10 wt% of a resin, 0.02 to 0.2 wt% of a retardant, and 0.4 to 5 wt% of water, and is mixed with hydrated citric acid having a purity of 95 to 98% as a retarder. It is preferable that fast-curing cement, based on the weight of the fast-curing cement, comprises: 0.01 to 0.1 parts by weight of limestone; 0.02 to 0.1 parts by weight of steel slag; 0.1 to 0.4 parts by weight of cement; 0.2 to 0.4 parts by weight of calcium sulfoaluminate (CSA); 0.1 to 0.4 parts by weight of anhydrite; 0.001 to 0.01 parts by weight of a curing accelerator; and 0.001 to 0.01 parts by weight of a curing retardant. At this time, limestone has an average particle diameter of 1 to 30 μm. It is preferable that the steel slag, based on the weight of the steel slag, comprises: 0.3 to 0.6 parts by weight of CaO; 0.2 to 0.4 parts by weight of Al_2O_3; 0.05 to 0.15 parts by weight of SiO_2; and 0.01 to 0.1 parts by weight of MgO and has a fineness of 4,000 to 8,000 cm^2/g. Accordingly, the initial strength is excellent.
본 발명인 초속경 콘크리트 조성물은 속경성 시멘트 10~30 중량% 잔골재 30~50 중량%; 굵은골재 30~50 중량%; 수지 3~10 중량%; 지연제 0.02~0.2 중량%; 물 0.4 ~ 5 중량%;를 포함하고, 지연제로 순도가 95~98%인 함수구연산이 혼합된다.속경성 시멘트는 속경성 시멘트의 중량을 기준으로, 석회석 0.01~0.1 중량부; 제강슬래그 0.02~0.1 중량부; 시멘트 0.1~0.4 중량부; 칼슘설포알루미네이트(Calcium Sulfo Aluminate, CSA) 0.2~0.4 중량부; 무수석고 0.1~0.4 중량부; 경화촉진제 0.001~0.01 중량부; 경화지연제 0.001~0.01 중량부;를 포함하는 것이 바람직하다.이때 석회석은 평균입경은 1~30㎛ 이다. 제강슬래그는 제강슬래그의 중량을 기준으로, CaO 0.3~0.6 중량부; Al2O3 0.2~0.4 중량부; SiO2 0.05~0.15 중량부; MgO 0.01~0.1 중량부;를 포함하되, 4,000~8,000 ㎠/g의 분말도를 갖는 것이 바람직하다.
Fast Curing Concrete Composition And Method For Repairing And Rehabilitating Road Pavement thereof
속경성 콘크리트 조성물 및 이를 이용한 콘크리트 포장 보수공법
LEE DUK YONG (author) / HWANG BONG CHOON (author) / PARK HONG CHUL (author) / UM JOO IL (author) / YOUN YU HYUN (author) / JUNG WOO YEON (author)
2020-06-29
Patent
Electronic Resource
Korean
Fast Curing Concrete Composition And Method For Repairing And Rehabilitating Road Pavement thereof
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