The Application of Rubber Aggregate-Combined Permeable Concrete Mixture in Sponge City Construction

Permeable concrete is a new type of pavement material, which can effectively improve the urban flood discharge system, and is of great significance to the construction of sponge city. In order to optimize the use effect of permeable concrete and improve the application value of permeable concrete in permeable road engineering, the combination of rubber aggregate and permeable concrete is proposed, and the mix ratio of rubber permeable concrete mixture material is designed, which is applied to the engineering of pavement in Hunan Province, and its comprehensive pavement performance is analyzed and evaluated. The results show that the rubber permeable concrete has the best performance when the water cement ratio is 0.3, the designed porosity is 15%, the rubber particle size is 16 mesh, the rubber content is 15% and the coarse aggregate ratio is 4:6. The removal rates of suspended solids and metal pollutants are 0.65 and 0.72, respectively, which are increased by 0.23 and 0.19, respectively, compared with ordinary permeable concrete. This shows that rubber permeable concrete improves the ecological benefits of permeable concrete pavement, gives full play to the economic benefits of waste rubber products, reduces the construction cost of permeable concrete pavement, and provides assistance for promoting the construction of sponge city.

Automated summary

Permeable concrete is a new type of pavement material that improves urban flood discharge system and is significant for building a sponge city. By combining rubber aggregate with permeable concrete, the mix ratio of rubber permeable concrete is designed and applied to pavement engineering. The performance of the rubber permeable concrete is analyzed and evaluated, showing improved ecological benefits and economic advantages compared to ordinary permeable concrete.