Composition selection and analysis of concrete produced by utilising sand from crushed concrete waste

Abstract

Normal concrete, produced by using the fine aggregates from the recycled materials, is analysed in the research. Composition selection methodology for the concrete mixture is presented in the research. By employing this methodology, the normal hardened concrete is produced from the natural aggregates and crushed recycled materials. The properties of compressive strength and density of this concrete are not lower than the characteristics of concrete produced only from the natural aggregates. Concrete waste, obtained through the milling, was used for the concrete mixtures described in the research. Concrete waste was used in the concrete mixtures as a fine aggregate together with the fine natural sand. The composition of such mixtures of fine aggregates results in a possibility to use sand, whose module of coarseness is lower or equal to 1, for the concrete production.