Mixtures of soil-cement containing up to 5 wt.% of water treatment plant waste as a partial substitute of soil
(Table 1) were prepared. A traditional composition of soil-cement (soil: cement - 10:1) was used as reference.
Portland cement and soil commercial were used. Soil/waste/cement mixtures were wetted with 16 wt.% of water.
Cylindrical pieces were prepared by uniaxial pressing (18 MPa), and then cured for 28 days in a humid chamber (~
95% humidity at 24 °C).