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Information × Registration Number 0222U005252, 0119U103026 , R & D reports Title Investigate the possibility of using dry concrete mixtures for gunning production of "Rotis plus" at the mining enterprises popup.stage_title Head Kurnosov Serhii A., Доктор технічних наук Registration Date 26-12-2022 Organization Institute of Geotechnical Mechanics named after MS Polyakova of the National Academy of Sciences of Ukraine popup.description2  The object of research is concrete mixtures based on host rocks. The purpose of the research is to determine the relative deformations of the concrete layer when filling the fixed production space with mixtures of different composition to establish the area and parameters of their application in various mining and geological conditions. Research methods – analysis of regulatory and technical documentation, experimental research in laboratory and mine conditions. An analysis of the requirements for the types and parameters of the composition of construction mixtures for mining technologies was carried out, the technical characteristics and the scope of their application were studied. The concreting parameters of the mining production circuit and the deformation parameters of the concrete layer in different mining and geological conditions when using mixtures of different composition were determined. The value of the minimum thickness of the concrete coating was determined depending on the disturbance and humidity of the massif, the class of concrete and the technology of its application. It was established that the strength of concrete of classes B25 and B30 (Tekhard Sh and Tekhard T) is sufficient for shotcrete of the fastening space in zones I, II and III with a distance between the fastening frames of 0.5 m. Product Description popup.authors popup.nrat_date 2022-12-26 Close