The maximum improvement in steel-concrete bond strength
is recorded with 10.0% marble dust as a replacement for
cement or as a replacement for sand.
12. The use of marble dust up to 15.0% by weight as a replacement
for cement or as a replacement for sand has insignificant
effect on the ultrasonic pulse velocity test values.
13. The use of marble dust in concrete as cement replacement or
as sand replacement can produce less porous concrete compared
with concrete without marble dust.
14. In general, the use of marble dust as sand replacement has
more significant effect on the mechanical properties of concrete
compared with using it as cement replacement