| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a composition for an anchor for a rock bolt, which suffers little separation of an aqueous silicate solution, exhibits excellent compatibility of an aqueous silicate solution with an isocyanate component, suppresses the elution of organic compounds from a hardened product of the composition, can control environmental pollution (particularly water contamination), and imparts not only high strength but excellent long-term durability to the hardened product, and to provide an anchor for a rock bolt, the anchor being formed by hardening the composition. <P>SOLUTION: The composition for an anchor comprises a component (A) containing an aqueous silicate solution and a component (B) containing an isocyanate compound, wherein the component (A) contains (A1) an aqueous sodium silicate solution and (A2) an amine polyol selected from the group consisting of trialkanolamines and alkyldialkanolamines, and the component (B) contains (B1) an isocyanate compound and (B2) an ester compound of 8-12C aliphatic alcohol with polybasic acid. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
