Modern concrete composites for earthquake-resistant construction

Objective. The purpose of the research is to develop earthquake-resistant building composites Method. The study is based on experimental dynamic testing of fine-grained concrete. Existing approaches to ensuring seismic safety of buildings and structures are analytically summarized. Result. Domestic and foreign experience in designing fine-grained concrete compositions for earthquake-resistant construction is presented. Compositions of fine-grained concrete of various classes were obtained using raw materials of natural and man-made origin. Recipes were proposed and their construction, technical and dynamic properties were studied. Conclusion. The strength of fine-grained concrete increases with decreasing loading time, and at a loading time of approximately 0.01 sec or a loading rate of about 5000-7000 MPa sec, this excess is about 30% compared to the statistical strength of concrete. This allows us to recommend fine-grained concrete for structures experiencing dynamic impact.