Title:
プレミックスモルタル用粉体乾燥収縮低減剤、プレミックスモルタルおよびセメント硬化体
Document Type and Number:
Japanese Patent JP6752443
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a powder dry shrinkage reduction agent for premixed mortar suppressing dry crack by exhibiting dry shrinkage reduction effects, having no reduction of frost damage resistance and without deterioration of durability of a concrete structure even in cold district.SOLUTION: There is provided a powder dry shrinkage reduction agent for premixed mortar which is a fine powder by absorbing a polyoxy alkylene derivative (b) which is represented by the formula [1] and liquid at 25°C to an organic fine powder (a) with mass ratio of the organic fine powder (a) and the polyoxy alkylene derivative (b), ((a):(b)) of 20:80 to 60:40. RO-(AO)n-R[1], where Ris a saturated hydrocarbon group having 12 to 30 carbon atoms, saturated hydrocarbon group having 18 to 22 carbon atoms in Ris 70 mass% or more, Rrepresents one or more kind selected from a group consisting of a hydrogen atom and a methyl group, the hydrogen atom in Ris 70 mass% or more, AO is an oxyalkylene group having 3 and 4 carbon atoms, n is average addition molar number of the oxyalkylene group and n=1 to 50.SELECTED DRAWING: None
Inventors:
Fujii Mototaka
Matsui Tatsuya
Matsui Tatsuya
Application Number:
JP2016067827A
Publication Date:
September 09, 2020
Filing Date:
March 30, 2016
Export Citation:
Assignee:
NOF CORPORATION
International Classes:
C04B24/00; C04B22/06; C04B22/14; C04B24/02; C04B24/24; C04B24/32; C04B28/02; C08K3/00; C08L71/02
Domestic Patent References:
| JP2015182906A | ||||
| JP2124750A | ||||
| JP2164754A | ||||
| JP2007269608A |
Attorney, Agent or Firm:
Masumi Hosoda
Juno Aoki
Juno Aoki