How to properly test and apply BETOPRESS® lyophobic sols and sol-based modifiers in cement concrete

This article provides information in the accessible form about a completely different approach to the testing and application of lyophobic sols and sol modifiers in cement concrete, in contrast to any other chemical additives that are classified as true solutions in liquid form. The criteria outlined in clause 6.11 of GOST 27006-2019 for the selection of compositions produced in laboratory conditions cannot be extended to sols and sol modifiers, which are stabilized colloidal solutions. This specifically pertains to the preparation of concrete mixtures for subsequent testing. GOST 27006-86 was released during a period when all chemical additives used in concrete were solely available in the form of true solutions, comprising fully dissolved molecules and ions resulting from the complete dissolution of all components in water.