The composition of fine-grained fiber-reinforced concrete using Portland cement, stone crushing waste, volcanic ash and basalt fiber are considered. It was revealed that with an increase in the ash content in cement, the compressive and flexural strength of fine-grained concrete decreases, and the water absorption increases. Without a significant reduction in the properties of fine concrete, you can enter no more than 10% of volcanic ash.It has been established that with an increase in the content of large fractions of aggregate, the compressive and flexural strength of fine-grained concrete increases as a result of a more compact arrangement of sand grains. The increase in the content of fine sand fractions reduces the strength characteristics of concrete, and increases water absorption. The dependence of the properties of fine-grained fiber-reinforced concrete on the method of mixing the mixture and molding products
Keywords: portland cement, stone-breaking wastes, volcanic ash, basalt fiber, grain size distribution, fine-grained fiber-reinforced concrete, bending strength and compression, method of mixture preparation, method of molding products