THE INFLUENCE OF GKZH-11K AND FINE-GROUND DOLOMITE ON STRUCTURE FORMATION AND COMPRESSIVE STRENGTH OF CEMENT STONE WITH VOLUMETRIC HYDROPHOBIZATION

Abstract

This paper presents the results of researches that confirm that the strength gain of cement stone with GKZh-11K additive (30% solution in the amount of 0.7% of the mass of cement) is carried out with participation of processes of activation of dissolution of minerals and dispersion of the surface of cement particles due to additional formation of H⁺ protons as a result of H₂O dissociation, which is catalized by the K⁺ cation located in the liquid phase of the cement paste. Thus, the process of mineral dissolution involving the hydrolysis of the surface dispersion of cement grains and subsequent hydration can be attributed to autocatalysis, because the main catalyst for the dissolution of H⁺ protons and K⁺ cation does not regenerate.