Spanish and Scottish researchers have produced a strong and environmentally sound brick from wool fibers and an alginate found naturally in seaweed. A study published in Construction and Building Materials shows these wool bricks are 37% stronger than bricks made using unfired stabilized earth. No firing is required to create the wool bricks, which is good for energy savings and the environment.
The wool bricks have fewer fissures and deformities, reduced drying time, and increased resistance to flexion.