Silica and alumina nanoparticles cut shrinkage in polyurethane/epoxy grout
Lab results only, so not yet a basis for specification, but if nanoparticle-reinforced polyurethane/epoxy grouts reach the market they could suit crack injection and ground consolidation where shrinkage gaps are a risk. Specifiers should expect to ask for independent field data, cure behaviour and pricing before weighing them against established systems.