CEMENT COMPOSITION FOR DURABILITY INCREASE: Fid-Bau Portal

CEMENT COMPOSITION FOR DURABILITY INCREASE

HONG JUNG HEE / RYU YONG SUN / KANG DAE KYU

The present invention relates to a cement admixture and a cement composition comprising the admixture. The cement composition, according to the present invention, is activated at the time when the durability of the cement is degraded as certain time passes after the cement is hydrated, and thus enhances strength of the cement structure. In other words, sediments of mine drainage in the cement composition form Si-Al network through polymerization at the time when calcium silicate hydrate (CSH) gel is destroyed due to deterioration of the cement, and enhance durability again. The cement admixture of the present invention comprises: sediments of mine drainage including iron, aluminum and sulfate substances; calcium sulfo-aluminate (CSA) or calcium aluminate (CA); an alkaline hydroxide substance; and aluminosilicate minerals or sodium potassium silicate minerals.

본 발명은 시멘트 혼합재 및 이 혼합재를 포함하는 시멘트 조성물에 관한 것이다. 본 발명에 따른 시멘트 조성물은 시멘트가 수화된 후 일정 시간이 경과하여 내구성이 저하되는 시점에 작용하여 시멘트 구조물의 강도를 보강한다. 즉, 시멘트 조성물 내 광산배수침전물은 시멘트가 열화되어 CSH겔이 파괴되는 시점에 폴리머 반응을 통해 Si-Al 네트워크를 형성함으로써 내구성을 다시 강화시킨다.

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