Porous concrete, also known as permeable concrete or pervious pavement, is a type of lightweight, porous concrete made from aggregates, cement, and water. It does not contain fine aggregates and forms a honeycomb-like structure with uniformly distributed voids, as the coarse aggregates are bonded together by a thin layer of cement paste. It features breathability, water permeability, and light weight, and is also referred to as sand-free concrete.

A product developed by countries like Europe, the U.S., and Japan to address the defects in the road surfaces of existing cities. It allows rainwater to seep into the ground, effectively replenishing groundwater and alleviating the rapid decline in urban groundwater levels, among other environmental issues. It also effectively eliminates the hazards of pollutants like oil compounds on the ground to the environment; it is an excellent paving material that protects groundwater, maintains ecological balance, and mitigates the urban heat island effect. It holds special significance in promoting the healthy development of the human living environment and in urban rainwater management and water pollution control efforts.

Permeable concrete flooring performance and its advantages:

1. Increase the permeable and breathable area in cities, enhance heat and moisture exchange between the ground surface and the air, regulate urban climate, reduce ground surface temperatures, and benefit in alleviating the urban "heat island" phenomenon.
2. Maximize the use of rain and snowmelt, increase the surface relative humidity, replenish the increasingly depleted groundwater resources in urban areas, and utilize the permeable roadbed as a "sponge" function; improve the living conditions for urban surface plants and soil microorganisms, and adjust the ecological balance.
3. Alleviates the burden on road drainage systems during the rainy season, significantly reducing the pollution of urban water bodies caused by heavy rain.
4. Absorbs noise generated by vehicle travel, creating a quiet and comfortable living and traffic environment; prevents road surface water accumulation during rain and glare at night; enhances the comfort and safety of both vehicle passengers and pedestrians.
5. Prevents surface water accumulation and night-time road glare, ensuring no black ice forms on the road during winter (a nearly invisible thin layer of ice formed by frost and fog, extremely dangerous), enhancing the comfort and safety of vehicle and pedestrian traffic.
6. Large voids can absorb urban pollutant dust, reducing dust pollution.
7. Patterns and colors can be designed according to environmental and functional requirements, fully integrating with the surrounding environment.
8. The permeable concrete flooring offers strong integrity and a long service life, comparable to that of standard concrete. Additionally, it addresses the shortcomings of permeable bricks, such as poor integrity, unevenness, tendency to loosen, and short lifespan.