Clay Bricks: Environmentally damaging or sustainable ...
Sep 18, 2013· Wool bricks – Interestingly by adding wool to a clay brick you not only increase the strength by over 30% but the brick will also dry hard naturally, meaning there is no need to fire up a giant kiln. Mud bricks/Adobe – These bricks are still made out of clay, about 70% of clay in fact. The rest of the material comes from sand, gravel or silt.