Title:
SPRAYING MATERIAL AND SPRAYING CONSTRUCTION METHOD BY USING THE SAME
Document Type and Number:
Japanese Patent JP3729580
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a spraying material aiming at the improvement of a slump retaining property, an initial and a long term strength developing property, a dust reducing property, a rebounding property and working efficiency by including a cement and a powdery polycarboxylic acid-based high performance water reducing agent.
SOLUTION: This spaying material is obtained by blending 100 pts.wt. cement, 0.01-5.0 pts.wt. powdery polycarboxylic acid-based high performance water educing agent having 0.1-200μm means particle diameter and obtained by reacting a copolymer obtained by mixing a polyalklylene glycol alkenyl ether of the formula [A is a 2-4C alkylene; R is H or a 1-4C alkyl; (a) is 0, 1; (n) is 1-60] with maleic anhydride so as to become 1/2 to 2/1 molar ratio and copolymerizing, with a calcium salt compound, drying and crushing, 1-20 pts.wt. coagulation accelerator such as sodium aluminate, etc., 1-20 pts.wt. rapid coagulating agent, 0.1-10 pts.wt. coagulation retarder, 0.001-1.0 pts.wt. dust reducing agent, 1-100 pts.wt. superfine powder having ≤10μm means particle diameter and 0.5-7 pts.wt. fiber.
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Inventors:
Akitoshi Araki
Ryo Kobayashi
Kenkichi Hirano
Masahiro Iwasaki
Ryo Kobayashi
Kenkichi Hirano
Masahiro Iwasaki
Application Number:
JP33672096A
Publication Date:
December 21, 2005
Filing Date:
December 17, 1996
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KABUSHIKI KAISHA
International Classes:
E21D11/10; C04B7/32; C04B24/26; C04B28/02; C08L29/10; C08L35/08; C08L55/00; (IPC1-7): C04B28/02; C04B24/26; C08L29/10; C08L35/08; C08L55/00; E21D11/10
Domestic Patent References:
| JP3361693B2 |