The Usage of Methylsilicones in Radiation-Chemical Protection of Concrete

摘要

An influence of the atmosphere components on compositematerial such as concrete leads to the reduction of its strength and changes in its structure.Having excluded water from a concrete body it is possible to slow down the processes of its corrosion essentially. Traditional waterproofing means have various components with different viscosity in their structure. When applying them on a porous structure of a cement stone chromotropic separation of a hydrophobisator with the loss of its efficiency occurs.The impregnation of concrete by unsaturated organosiloxanes of low viscosity and their blends with dimethylsilyl and methylhydridesilyl oligomers followed by their irradiation induced curing have been studied.Samples of modified cement stone and determination of their physical-mechanical properties, namely compressive strength, waterproofness and frost resistance as well as an in?uence of impregnation on hydrophobisity of cement stone surface were obtained. Positive effect of the modification proposed on service properties and on durability of radiation-chemically modified concrete was observed.