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Title:
PRECAST CONCRETE MOLDED BODY
Document Type and Number:
WIPO Patent Application WO/2021/187520
Kind Code:
A1
Abstract:
A precast concrete molded body which is a cured product of a concrete composition, said concrete composition comprising microcapsules, which have a core-shell structure consisting of a core formed of a water repellent organic silicon material selected from the group consisting of an organosilane, an organosilane partial condensate and a branched siloxane resin and a shell formed of a silicon-based network polymer containing silica unit, a cement and at least one kind of aggregate, wherein the content of the microcapsules is 0.01 part by weight or more and less than 0.5 part by weight per 100 parts by weight of the cement. Thus, the present invention can provide a precast concrete molded body which has high strength and, moreover, is excellent in at least one of the properties of air content stability, ability to block invasion of substances and resistance against freezing and thawing.

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Inventors:
MINATO TARO (JP)
TANIGUCHI KATSUHIKO (JP)
USHIJIMA SAKAE (JP)
MATSUZAKI HIDEO (JP)
MAKIGUCHI MASATOMO (JP)
IMURA MOTOAKI (JP)
MORI HIDEYUKI (JP)
Application Number:
PCT/JP2021/010791
Publication Date:
September 23, 2021
Filing Date:
March 17, 2021
Export Citation:
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Assignee:
DOW TORAY CO LTD (JP)
International Classes:
C04B28/04; C04B24/00; C04B24/42
Domestic Patent References:
WO2019111768A12019-06-13
WO1998022530A11998-05-28
Foreign References:
JP2015526365A2015-09-10
JP2010047426A2010-03-04
JP2014144878A2014-08-14
JP2012041198A2012-03-01
JP2013193884A2013-09-30
JP2014201478A2014-10-27
JPH06305803A1994-11-01
JP2015525246A2015-09-03
JPH02124751A1990-05-14
JPH02199048A1990-08-07
JPH0215511B21990-04-12
JPS58500061A1983-01-13
JPH1036157A1998-02-10
JPH0769696A1995-03-14
JP2002097045A2002-04-02
JP2011126729A2011-06-30
JP2012132002A2012-07-12
JP2017025181A2017-02-02
JPH04317447A1992-11-09
JP2013193884A2013-09-30
JPH06305803A1994-11-01
EP1471995A12004-11-03
US5035832A1991-07-30
Other References:
See also references of EP 4122901A4
Attorney, Agent or Firm:
MURAYAMA Yasuhiko et al. (JP)
Download PDF:
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