SELF-COMPACTING CONCRETE WITH RECYCLED CONCRETE AGGREGATE AS ECOLOGICAL MATERIAL

Abstract

The concept of sustainable development, which in addition to social and economic aspects, includes energy saving, environmental protection and the conservation of exhaustible natural resources, is a strategic goal of many economic sectors including the particular contribution expected from the construction. Self-compacting concrete contains a certain amount of powdered materials – fillers. There are various possibilities of selecting this component. If we used any of the industrial by-products, such as fly ash or silica fume, we would solve the problem of depositing these materials, and thus made concrete ecological material. The research subject presented in this paper are the properties and technology of self-compacting concrete in the fresh and hardened state, made with various mineral additives: lime, fly ash, and silica fume, wherein the aggregates used, are both natural and recycled aggregates.