A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE ADMIXTURE
The present invention provides a concrete admixture which has excellent fluidity retention properties for a period of time as long as 120 minutes required until the placement of the concrete admixture without deteriorating the strength thereof, can have a proper setting time and therefore can achieve a handling time and workability, and can be prevented from the occurrence of bleeding. This concrete admixture comprises (A) a lignin derivative, (B) a copolymer having a hydrolysable group, and (C) a (meth)acrylic viscosity modifier component, in which (B) the copolymer having a hydrolysable group is a copolymer of at least two monomers including (b1) an ethylenically unsaturated monomer having a hydrolysable group and (b2) an ethylenically unsaturated monomer having a polyalkylene oxide ether chain.
CONCRETE ADMIXTURE
The present invention provides a concrete admixture which has excellent fluidity retention properties for a period of time as long as 120 minutes required until the placement of the concrete admixture without deteriorating the strength thereof, can have a proper setting time and therefore can achieve a handling time and workability, and can be prevented from the occurrence of bleeding. This concrete admixture comprises (A) a lignin derivative, (B) a copolymer having a hydrolysable group, and (C) a (meth)acrylic viscosity modifier component, in which (B) the copolymer having a hydrolysable group is a copolymer of at least two monomers including (b1) an ethylenically unsaturated monomer having a hydrolysable group and (b2) an ethylenically unsaturated monomer having a polyalkylene oxide ether chain.
CONCRETE ADMIXTURE
KAMESHIMA KENTA (author) / SAKUE JIRO (author) / KOIZUMI SHINICHI (author)
2023-06-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
ADMIXTURE FOR CONCRETE AND CONCRETE CONTAINING ADMIXTURE FOR CONCRETE
| European Patent Office | 2023