At present, improving the performance properties of concrete for dry and hot climates due to changing climatic conditions is of increasing interest to a wide range of researchers from the point of view of their practical application in the production of construction products. The paper investigates the possibility of synthesizing a spatially reinforced fine-crystalline structure of cement concrete for dry and hot climates, modified with basalt dust. The introduction of basalt dust waste into the composition of cement concrete forms the structure of artificial stone with the most dense packing. This is achieved by using a complex modifier based on basalt production dust removal waste together with a plasticizing additive in the composition of concrete for dry and hot climates. The introduction of these additives allows creating the best conditions for the process of forming the structure of cement stone from the standpoint of water content. Providing water content at all stages of the synthesis of modified stone allows for the acceleration and more complete flow of hydration and structure formation processes. The combined use of additives, as studies have shown, improves the performance properties of cement concrete, and therefore its use in the production of an expanded range of building products.