Investigation of the Properties of Concretes Produced Using Recycled Amphibolite Aggregates

The article presents the results of laboratory studies on the impact of replacing part of the cement and natural aggregate with amphibolite dust and aggregate on the properties of concrete. The dust and amphibolite aggregates used in the research are by-products generated during the industrial processing of amphibolite rock. The study included a sieve analysis of the applied aggregates, the design of concrete mix formulas, determination of their consistency, as well as an examination of concrete shrinkage, assessment of specimen absorbability, and evaluation of compressive, flexural, and splitting tensile strength in accordance with relevant standards. The research results enabled an assessment of the impact of recycled amphibolite additives on the mechanical and physical properties of concrete, which is significant for optimizing concrete mix compositions.