Title:
ロックボルト定着材用組成物、ロックボルト定着材およびロックボルト工法
Document Type and Number:
Japanese Patent JP6823040
Kind Code:
B2
Abstract:
To provide a composition for rock bolt anchoring material that is of a foaming type but causes less contamination of water quality, and has sufficient strength, long-term durability, and sufficient strength development rate, and a rock bolt anchoring material obtained by curing the composition.SOLUTION: The present invention provides a composition for rock bolt anchoring material for pouring around natural ground after tunneling. The composition contains (A) component containing a polyol, an amine compound and water (c), and (B) component containing an isocyanate compound. The polyol contains a polyetherpolyol (a1). The amine compound contains an amine compound (b1) having a primary or secondary amino group. The content of the water (c) is 0.3 pt.mass-2.5 pts.mass relative to the (A) component 100 pts.mass.SELECTED DRAWING: None
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Inventors:
Naoki Nakagawa
Toru Yamada
Toru Yamada
Application Number:
JP2018220006A
Publication Date:
January 27, 2021
Filing Date:
November 26, 2018
Export Citation:
Assignee:
Daiichi Kogyo Pharmaceutical Co., Ltd.
International Classes:
C09K17/30; C09K17/14; E21D20/00
Domestic Patent References:
| JP6444074B2 | ||||
| JP4102615A |