Specifics of Concrete Solidification with Anti-frost Admixture at Subzero Temperature

The objective of this research is to determine the characteristics of the "cold" concrete solidification process with anti-frost admixtures at various subzero temperatures. The obtained results reflect these characteristics. The effect of various subzero temperatures and anti-frost admixtures on the phase composition of the cement stone and the formation of concrete physical and mechanical characteristics have been studied. It has been established that at any subzero temperatures "cold" concrete does not solidify, but in the process of thawing the properties of concrete depend on the temperature the concrete is being kept at. The phase composition of the cement stone depends on the temperature because these characteristics are affected by the solubility of the minerals the cement contain and also by their interaction under certain conditions. (paper)