How about the hardness of ecological permeable bricks? As the saying goes, fish and bear's paw can't have both, but the excellent water permeability and water retention of this ecological permeable brick comes from the porosity of about 20% of the product. There is no guarantee of its hardness, but ecological permeable bricks do. With such a large porosity, most people wonder whether its strength is as small as that of lightweight refractory bricks. In fact, the strength of this product can reach more than 120kgf / cm2. It can be laid in parking lots and can overload cars with a load of 40T or more.
In foreign countries, such as Japan, urban sidewalks, pedestrian streets, apartment parking lots, airports, etc. are basically used in place of cement and stone hardened pavements. Why does this product have such great strength?
The first is that the thickness of the product reaches 60 to 80mm; the second is that the product is added with a special binder when the ingredients are blended; the third is that the product is fired at a temperature of about 1200 ° C. Because the permeable brick uses ceramics as its raw material, its firing temperature reaches about 1230-1250 ° C, and the firing cycle is about 20 hours.
Therefore, although the porosity of the product is large, the strength is still guaranteed, the strength has been achieved, and the function and effect have not diminished. This is the advantage of the ecological permeable brick.