Permeable concrete, also known as porous or pervious concrete, is a special type of concrete designed to allow water and air to pass through, reducing the runoff and enhancing the replenishment of groundwater. This property is achieved by creating a network of voids within the concrete by using little to no fine aggregate and incorporating larger-sized coarse aggregates. The primary mechanism behind permeable concrete is its open pore structure, which facilitates the movement of water and air, thereby mitigating surface runoff and promoting natural water infiltration into the soil. However, this structure can also be a drawback, as it may lead to reduced structural strength compared to traditional concrete, making it unsuitable for certain load-bearing applications. The effects of permeable concrete in severe environmental conditions include enhanced resistance to freeze-thaw cycles, due to its ability to drain water, but increased susceptibility to clogging and reduced effectiveness if not maintained properly.