1. The initial setting time and the final setting time of cement
pastes are not so much influenced by the use of marble dust.
2. Expansion measurements of cement paste show that the
expansion value is not considerably affected by the use of
marble dust, where this value ranges from 2.00 mm to
2.75 mm.
3. TGA test results indicate that there is no change in phase
chemistry for cement paste modified with marble dust compared
with control cement paste and the variation of calcium
hydroxide content is insignificant.
4. SEM investigation shows that the morphology of the internal
structure of paste specimens with and without marble dust
are not considerably different from each other which verify
that marble dust has no noticeable role during the hydration
process.
5. The compressive strength of cement mortar increases by the
use of marble dust as cement replacement