Brick waste as a concrete aggregate

The achievements in the field of brick waste disposal, which can be used as aggregates for concrete are analyzed. The brick waste usage as an aggregate solves both the problem of waste disposal and significantly reduces the economic costs of concrete production, often improving its quality. The properties of various types of aggregates and their effect on the concrete properties are analyzed. It is established that the strength of cement concrete with brick chips as the aggregate is higher. However, the strength of such concrete decreases when wet due to the high water absorption capacity of the brick chips. In addition, the cement composition, size and percentage of the aggregates affect the strength and other properties of the resulting concrete. The brick chips have properties tipical for the source material, but differ in structure. The pores make the material lighter. Brick splinters made of porous bricks have higher thermal insulation properties than those made of dense ceramics. The review also presents the research results in the field of household and industrial waste usage, such as incinerator’s bottom ash, metallurgical slags, silica fume from a ferroalloy plant, as well as brick debris as an additive to concrete, which allows to develop a technique for modified concrete production.