Minhang Park

Porous concrete

1. Definition

Ecological permeable concrete, also known as drainage concrete, is a new type of environmentally friendly paving material made by blending fine aggregates, 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 bind together in a honeycomb pattern, allowing rainwater to infiltrate the ground and effectively replenish groundwater. It also effectively eliminates the environmental pollution caused by oil compounds on the ground. With its vibrant colors and landscape integration, it contributes to a more harmonious urban environment, protecting nature, maintaining ecological balance, and alleviating the urban heat island effect.

2. Permeable Concrete Construction Process

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

2. Pouring: Before pouring, the subgrade must be moistened with water. Otherwise, the rapid loss of moisture in the permeable concrete will reduce the bonding strength between aggregates. Simply spread the material evenly on the subgrade.

3. Vibration: Avoid excessive vibration and compaction during pouring.

4. Rolling: After vibration, further compaction and leveling should be achieved using solid steel pipes or light roller compactors, for the permeable 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. Final Product: The membrane wet curing time for pervious concrete should be no less than 7 days, followed by applying a layer of specialized pervious concrete sealer.