— Besides this, the use of high amount of waste marble powder or slurry (over 20%) has delayed setting times (Ashish, 2019, Munir et al., 2017, Rashwan et al., 2020, Ruiz-Sánchez et al., 2019, Singh et al., 2017). If waste marble powder content increases, C 3 S content decreases and thus, hydration of cement also decreases. This means that ...