Cement admixture, and cement composition and concrete containing the cement admixture
AssigneesThe University of Tokyo, National University Corporation Yokohama National University, East Japan Railway Company
InventorsToshiharu Kishi, Tae-Ho Ahn, Akira Hosoda, Kaoru Kobayashi
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Abstract
It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.
Claims6
A cement admixture comprising:
- an expanding material;
- an alumina-silicate with swelling properties;
- a magnesium silicate;
- and
- a calcium phosphate.
Dependencies are inferred from the claim text.