Colloidal solutions in the production of nanostructured and nanoimproved concrete

The article discusses innovative technologies developed by the Russian company OOO NPO BETOHIMIKS in the field of sol modification of concrete. Nanostructuring of cement matrix using the sol-gel method is performed by introducing colloidal solutions into the concrete mixture during its preparation. Lyophobic sols can be added to concrete together with inert materials or separately with mixing water, and also as chemically reactive additives in plasticizers, produced mostly with raw materials as lignosulfonates, naphthalene sulfonates or polycarboxylates. Data from official laboratory tests of samples of nano-improved heavy concrete for compression according to GOST 10180-2012 in comparison with control samples, mixture compositions, as well as formulations of sol modifiers for their preparation and practical use in production conditions are presented.