limestone
elements. Moreover, in the mortars with limestone injection, it
was noted that for a curing of 28 days, strength decreases proportionally
with shorter curing times.
On the other hand, the mortars with silica sand were the only ones
that had flexural strength resistances above 4 MPa, unless the curing
time was less than 28 days. The mortars made with limestone and
sludge had low flexural strength resistance, and it was concluded that
they are more suitable for applications requiring tensile strength such
as tunnels or roads.