In present conditions of extension and perfection of the types of materials used at injection works, determined by diversifying of cases of which solving is indicated the injection, using of the cements with advanced fineness present numerous advantages and opportunities of technical, ecological and economic order.
The paper presents the results obtained as consequence of researches made in laboratory regarding obtaining of some mix cements with advanced grinding fineness. It were performed and characterized from physical-mechanical point of view with unique addition of 15% granulated blast furnace slag, fly ash respectively. Grinding fineness of cements, expressed as Blaine specific surface was of 8000 cm2/g. With obtained cements were performed fluids of injection with ratios water/cement varying between 0.4 and 0.8 and different proportions of superplasticizer SP430. Fluids of injection were characterized from rheological and reotechnical point of view.