Special Injections: Repair, Consolidation, Watertightness (Injections Speciales: Reparation, Consolidation, Etancheite),
Abstract
Special injections with grouts having an organic resin base have been developing during the past few years and can be divided, for the sake of simplicity, into two main categories: (a) Precondensed resins without solvent. These are thermohardenable resins that polymerize cold under the influence of a hardener (polyepoxy, polyurethane) of a catalyzer (polyester, polysulfide) or even sometimes of the simple air moisture water serving in this case as a catalyzer (silicon and certain polyurethanes). these resins, once catalyzed, acquire great strength sometimes associated with a marked elasticity. They serve mainly, within the framework of injection, for the treatment of concretes which have cracked or which are of poor quality. (b) monomers soluble in water. Certain monomers of the acrylamide, phenoplast and aminoplast type have the property of being able to be dissolved in water in any proportion and of polymerizing cold without separating from the mixture water. The mechanical characteristics of these aqueous solutions after polymerization are obviously much lower than those of resins without solvent, and this class of products is therefore limited especially to use for the purpose of water-tightness or to consolidate fine cohesionless soils. They have, in fact, the interesting property of being much more fluid than all traditional products basically made of cement, silicate, lignosulfite, etc.. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1976
- Accession Number
- ADA032060
Entities
People
- C. Caron
Organizations
- Cold Regions Research and Engineering Laboratory