"This special concrete allows light to pass through. It contains optical fibers that make up about 5% of its surface area. The fibers are distributed uniformly throughout the surface to allow an outline to be clearly visible on the other side. The material is made with a combination of optical fibers and fine concrete. It can be produced as prefabricated building blocks. Due to the small size of the fibers, they blend into concrete and become a component of the material like small pieces of aggregate. The result is a new material, which is homogeneous in both its inner structure and its surfaces."











