Utilization of clay brick wastes for production of high strength eco-concrete enables
the combat of raw resources depletion due to excessive mining as well as mitigating
environmental pollution caused by demolition of old brick structures in an effort to achieve
environmental sustainability in line with the sustainable development goals (SDGs). This study
investigates the beneficial usage of crushed clay brick as partial replacement for natural sand in
producing high strength eco-friendly concrete. The replacement percentages of the crushed clay
brick in respect to sand are 0, 10, 20, 30, 40 and 50% by weight using a mix proportion ratio of
1:1:2 at a constant water-cement ratio of 0.25, aiming at the 28 days compressive strength of
about 40 MPa. The chemical characterization of the crushed clay brick and cement was conducted
via X-ray fluorescence (XRF). The mechanical properties tests were performed on about 80
specimens using 100 x 100 x 100 mm for cubes, 100 x 100 x 500 mm for beams and 100 x 200
mm diameter for cylinders after 7, 14 and 28 days of curing in water. Results showed that concrete
containing crushed clay brick as partial replacement for sand compare favourably well with the
control. Consequently, it is suggested that generated clay brick wastes can be crushed and used
as replacement for natural sand for the production of eco-friendly high strength concrete
