Minhang Guanghua Road Park

Permeable concrete

Definition

Ecological permeable concrete, also known as drainage concrete, is a new type of eco-friendly paving material made by mixing small gravel, high-grade concrete, water-permeable admixtures, water, colored reinforcing agents, and stabilizers in a certain proportion. It is formed by a layer of thin paste on the surface of coarse aggregates that bond together in a honeycomb structure, allowing rainwater to infiltrate the ground and effectively replenish groundwater. It also effectively eliminates the environmental hazards caused by pollutants like oil compounds on the ground. With its vibrant colors and aesthetic integration, it contributes to a harmonious urban environment, protecting nature, maintaining ecological balance, and mitigating the urban heat island effect.

2. Permeable Concrete Construction Process

1. Mixing: Blend cement and aggregates in a proportion using a mixer to create a well-mixed material.

2. Pouring: Prior to pouring, the subgrade must be moistened with water. Otherwise, rapid water loss from the permeable concrete will decrease the bond strength between aggregates. Simply spread the material evenly over the subgrade.

3. Vibration: Avoid excessive vibration and tamping during the pouring process.

4. Compaction: After vibration, further compaction should be achieved using solid steel pipes or light compaction rollers, to flatten and ensure permeability of the concrete mixing material.

5. Maintenance: Due to its numerous pores, permeable concrete is prone to water loss and dries quickly, thus requiring film covering for maintenance.

6. Finished Product: The film curing time for permeable concrete should be no less than 7 days, followed by applying a layer of specialized permeable concrete sealant.