Title:
CONCRETE ADMIXTURE
Document Type and Number:
WIPO Patent Application WO/2022/085754
Kind Code:
A1
Abstract:
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.
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| JP2011184230 | LIGNIN-BASED CONCRETE ADMIXTURE |
Inventors:
KAMESHIMA KENTA (JP)
SAKUE JIRO (JP)
KOIZUMI SHINICHI (JP)
SAKUE JIRO (JP)
KOIZUMI SHINICHI (JP)
Application Number:
PCT/JP2021/038902
Publication Date:
April 28, 2022
Filing Date:
October 21, 2021
Export Citation:
Assignee:
CONSTRUCTION RESEARCH & TECHNOLOGY GMBH (DE)
KAMESHIMA KENTA (JP)
KAMESHIMA KENTA (JP)
International Classes:
C04B24/18; C04B24/06; C04B24/26; C04B28/02; C04B28/08
Domestic Patent References:
| WO2020195910A1 | 2020-10-01 |
Foreign References:
| JP2008505234A | 2008-02-21 | |||
| JP2014218619A | 2014-11-20 | |||
| JP2012505812A | 2012-03-08 | |||
| JP3065476B2 | 2000-07-17 | |||
| JP6076722B2 | 2017-02-08 |
Other References:
See also references of EP 4194421A4
Attorney, Agent or Firm:
EINSEL Felix-Reinhard (JP)
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