Taiheiyo Cement Corporation

Makihiko Ichikawa

Susumu Sano

Daisuke Sawaki

Kouki Ichitsubo

Kenichi Honma

Norihiko Arai

Kenichi Homma

Kenichi Matsumoto

Shuuichi Harasawa

A hydraulic composition including: a ground burned product A having a hydraulic modulus (H.M.) of 1.8 to 2.3, a silica modulus (S.M.) of 1.3 to 2.3 and an iron modulus (I.M.) of 1.3 to 2.8; and a gypsum. The hydraulic composition is capable of reducing heat of hydration and producing a mortar or a concrete excellent in flowability and strength development.

Hydraulic composition

A burned product containing 100 parts by weight of CS, 10 to 100 parts by weight of CAS, and 20 parts by weight or less of CA; a cement admixture prepared by grinding the burned product; and a cement containing 100 parts by weight of ground portland cement clinker and 5 to 100 parts by weight of a ground product of the burned product.

Cement admixture

New alkanolamine additives for improving the compressive strength, etc. of set cementitious compositions such as Portland cement concrete are described as having at least one alkanolamine or the salt thereof containing at least one alkanol group, and at least one ionic functional group other than hydroxyl group.

Additives for cement materials and cement materials

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Sakura, Japan

Makihiko Ichikawa