POLYMERIC COMPOSITION FOR REPAIR AND GLUEING OF SINGLE CHEMICALLY STABLE ARTICLES TO CONCRETE BASE Russian patent published in 1994 - IPC

FIELD: building industry. SUBSTANCE: polymeric composition has: furfurolacetoneepoxy-schistose binder 100 mas. p., hardener - a mixture of waste in salt АГ production - a mixture of light fraction with boiling point 200-204 C, mass part of hexamethylenediamine 94-98%, water 1.6-1.7%, amine number 938-943 mg KOH/g with vat residue of hexamethylenediamine-raw rectification 4.0-4.5% , water 0.5-0.6% at mass ratio of fraction 1:(15-17) 20-30 mas. p. Filler is powder armazit - a mixture of p-toluenesulfoacid with graphite powder at mass ratio (8-8.5):100 10-15 mas. p., phosphorus silica gel - a waste of salt АГ production containing SiO₂ 85-95 mas. p., phosphoric acid after calcination 10.5-12.5 mas. p., alkaline metal as Na₂O 2.5-3.0 mas. p. - 50-100 mas. p. Components are stirred and put into metallic forms covered with antiadhesion lubricant. After hardening under normal conditions after 4.5 h at 20-25 C composition is treated at 60 C for 3 h and at 100 C for 6 h. Composition properties: compression rupture stress is 50.2 MPa, at static bending is 42.6 MPa, specific impact elasticity is 4.1 kJ/m², adhesion to cement dry and moisture concrete exceeds that of concrete, stability coefficient in water at 23 C is 98.8, in 30% and 60% H₂SO₄ at 23 C is 0.8 and 0.62, respectively, in 30% and 60% H₃PO₄ at 23 C is 0.97 and 0.72, respectively, in 30% CH₃-COOH-COOH at 23 C is 0.7, in 33% HCl at 23 C is 0.65, in 20% and 40% NaOH at 23 C is 0.95 and 0.85, respectively. EFFECT: enhanced quality of composition. 2 tbl