REPAIRING GROUT FOR BURIED PIPE

摘要

PURPOSE:To obtain a grout having properties satisfying requirements as a repairing grout. CONSTITUTION:A repairing grout mainly comprises water glass, formaldehyde, glyoxal, a mixture of formaldehyde with glyoxal, and at least one water-sol. aminoplastic resin with urea as the nitrogen component. A gelation accelerator or tackifier is added as necessary to adjust the gelation time or tackiness.