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US 4,302,251 AGranted
Cement composition containing dextrin
AssigneeDenki Kagaku Kogyo Kabushiki Kaisha
InventorsHideyuki Udagawa, Tetsuya Ando, Iwao Kibayashi
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Abstract
A cement composition is provided which comprises a cement, and 0.1 to 2.5% by weight, based on the weight of said cement, of a dextrin having a cold-water solubility of from 10 to 80% by weight. The cement composition of the invention suppresses heat of hydration, so that the cement mortar or concrete do not crack due to the heat of hydration.
Claims12
A cement composition for suppressing temperature rise due to heat of hydration, comprising
- a cement,
- 0.1 to 2.5% by weight, based on the weight of said cement, of a dextrin having a cold-water solubility of from 10 to 80% by weight, and
- 0.02 to 1% by weight, based on the weight of said cement, of a surface active agent selected from the group consisting of water reducing agents, air entraining water reducing agents, and air entraining agents and mixtures thereof.
Dependencies are inferred from the claim text.