In order to contribute to the further development of this way of SMC recycling, in this paper, different percentages of SMC were used for FCBs manufacturing.
Special attention was paid to the TC in order to determine if SMC addition may improve thermal insulation of FCBs.
From this point of view, SMC addition might be not only a sustainable way of recycling but an element which increases the thermal insulation for buildings.
Therefore FCBs made by using SMC will provide lower wall thermal transmittance and thus an energy saving.
In order to comply requirements abide by settled law for structural clay bricks [32] compressive strength (CS) and water absorption (WA) have been tested to determine the maxi-mum percentage of SMC that can be added.