INVESTIGATION AND DETERMINATION OF CONCRETE STRENGTH FROM SULUKTINSKY QUARTZ SAND AND KYZYL-KYI PORTLAND CEMENT
In the present work portland cement of Kyzyl-Kiysk Cement Plant of activity 41.5 MPa was used to study concrete samples and conduct laboratory tests. As a filler, quartz sand of the Sulukta quarry with the size module of 75 and 250 microns was used. In laboratory conditions, after the natural drying, the strengths of the experimental samples were measured, from the cylindrical shape, with a diameter of 50 mm, a height of 30 mm. The manufactured samples were tested By standard compression and stretching methods using the KEF-1736-86 press, by dividing into the following 250 μm series with 5% to 15% Portland cement, strength of 15% to 55%. Samples of the 75 μm series were distinguished by their strengths ranging from 5% to 15% with Portland cement, strength of which is 19% to 90%. The fillers were pressed, the dry constituents of the composite mixture were premixed until a homogeneous mass was obtained. And we found out that silicon oxide with a dispersion of 75 μm and portland cement with a content of 10% to 15% differed in strength and meets the requirements of building materials, ie with a decrease in the size of aggregate particles (quartz sand) from 75 km, the strength of concrete increases 3 or more Times for different concentrations of aggregate.