Porous pavement offers numerous advantages over conventional concrete, which has led to its rapid development and widespread adoption. Colored porous concrete is not only aesthetically pleasing and decorative but also serves practical functions such as water permeability, sound absorption, and dust absorption. Its installation is commonly used for landscape roads due to its beauty and permeability, with strengths up to C30, meeting the requirements for light load road surfaces.
Drainage concrete construction注意事项:
1. Temperature, for instance during the summer season, it's crucial to avoid high-temperature periods. The ideal temperature for pervious concrete construction is between 15℃-25℃. During summer, be mindful of the rapid evaporation of concrete moisture, so monitor the slump during construction. Keep a close eye on the weather to prevent heavy rain from damaging the construction project.
2. Due to the porous nature of permeable concrete, it should be laid with a loose spreading factor of 1.1-1.5, and leveled using a low-frequency vibration compactor.
3. Strictly control the water-cement ratio during mixing, i.e., add water in 2-3 stages, with each stage mixing for about 60 seconds, and prohibit adding all at once.
4. Set expansion strips to prevent concrete from expanding and cracking due to high temperatures, which is more convenient than cutting joints.
Drainable pavement construction highlights
Construct the base of the colored permeable paving according to the design.
2. Pour the colored permeable pavement material into the mixer, and mix dry for 3-5 minutes. Then, add 2.2 kg of water for every 50 kg of permeable material and mix until the aggregates begin to shine, then stop the machine.
3. Spread the evenly mixed colored permeable material onto the prepared base, level it with a flat vibrator, then flatten it with a heavy iron roller or grind it smooth with a mill equipped with stainless steel grinding disks. Use small tools to neatly finish off the edges and corners promptly.
4. Apply surface maintenance agent to nurture the surface.
5.5 to 7 days later, apply the surface protective agent.
