Aims: To produce a low environment impact concrete by recycling waste brick
and waste marble.
Background: Marble and brick wastes are produced as a byproduct during manufacturing or
cutting processes. These materials could be used as a substitution to cement in mortar and
concrete to reduce its environmental impact.
Objective: To study the performance of self-compacting mortar with marbles and brick
powders at the fresh and hardened states.
Methods: It is an experimental investigation where two Blaine finenesses of marble and brick
powders were used. Rheological, mechanical and physical properties of the new composites
Results: The results show that for optimal workability and compressive strength of SCM,
the maximum percent of substitution must not exceed 5% for brick powder, whereas for
marble powder it can reach up to 20% according to the fineness of powder. The incorporation
of brick and marble powders separately decreases the shrinkage of SCM and the combination
of both powders has a positive effect on its sorptivity coefficient and total shrinkage.
Conclusion: Maximum 5% and 20% of brick and marble powder respectively are recommended
for optimal properties of self-compacting mortar.