Influence of recycled brick aggregates on properties of structural concrete for manufacturing precast prestressed beams

•Structural concrete has been manufactured using recycled brick aggregates.•Coarse and fine natural aggregates have been replaced by recycled brick aggregates.•Percentages of substitution have been 20%, 35%, 50%, 70% and 100%.•The elastic modulus decreases noticeably when recycled aggregates are used.•Precast pre-stressed joists can be manufactured using recycled aggregates up to 35%.