Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CEMENT ADDITIVE, CEMENT COMPOSITION, AND CEMENT ADDITIVE RAW MATERIAL
Provided is a cement additive that can suppress the production of Glauber's salt as a by-product, and that can express excellent retention when turned into a cement composition. Also provided is a cement composition including such cement additive. Also provided is a raw material for a cement additive to be used in such cement additive. The cement additive of the present invention includes: a polycarboxylic acid-based copolymer (A) having a structural unit (I) derived from an unsaturated polyalkylene glycol-based monomer (a) represented by the specific general formula (1) and a structural unit (II) derived from an unsaturated carboxylic acid-based monomer (b) represented by the specific general formula (2); and an alkanolamine compound (B), in which a content of the structural unit (II) with respect to a total amount of the structural unit (I) and the structural unit (II) is 60 mol% or less.
CEMENT ADDITIVE, CEMENT COMPOSITION, AND CEMENT ADDITIVE RAW MATERIAL
Provided is a cement additive that can suppress the production of Glauber's salt as a by-product, and that can express excellent retention when turned into a cement composition. Also provided is a cement composition including such cement additive. Also provided is a raw material for a cement additive to be used in such cement additive. The cement additive of the present invention includes: a polycarboxylic acid-based copolymer (A) having a structural unit (I) derived from an unsaturated polyalkylene glycol-based monomer (a) represented by the specific general formula (1) and a structural unit (II) derived from an unsaturated carboxylic acid-based monomer (b) represented by the specific general formula (2); and an alkanolamine compound (B), in which a content of the structural unit (II) with respect to a total amount of the structural unit (I) and the structural unit (II) is 60 mol% or less.
CEMENT ADDITIVE, CEMENT COMPOSITION, AND CEMENT ADDITIVE RAW MATERIAL
ZEMENTADDITIV, ZEMENTZUSAMMENSETZUNG UND ZEMENTADDITIVROHSTOFF
ADDITIF DE CIMENT, COMPOSITION DE CIMENT ET MATIÈRE PREMIÈRE POUR ADDITIF DE CIMENT
TAKAYAMA TAKESHI (Autor:in) / KAWAMURA MARIE (Autor:in)
03.04.2019
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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