Pervious concrete

Definition

Pervious concrete is a type of concrete that allows water to flow through its surface, promoting drainage and reducing runoff. This unique property makes it an effective tool for managing stormwater and enhancing water quality, as it helps filter pollutants before they reach groundwater or nearby water bodies.

5 Must Know Facts For Your Next Test

1. Pervious concrete typically consists of a mixture of cement, coarse aggregates, and little to no fine aggregates, creating a porous structure.
2. The use of pervious concrete can help reduce the volume of stormwater runoff, alleviating pressure on drainage systems during heavy rainfall.
3. By allowing rainwater to infiltrate through its surface, pervious concrete helps recharge groundwater supplies, which is vital for maintaining local ecosystems.
4. This type of concrete can be used in various applications, including parking lots, sidewalks, and driveways, making it versatile for urban development.
5. In addition to its hydrological benefits, pervious concrete can also enhance the aesthetic appeal of surfaces while providing a safer walking environment by reducing slippery conditions.

Review Questions

• How does pervious concrete contribute to effective stormwater management practices?
  • Pervious concrete plays a crucial role in stormwater management by allowing rainwater to pass through its surface, which reduces runoff and promotes natural infiltration into the ground. This process not only minimizes the volume of stormwater that enters drainage systems but also helps filter out pollutants before they can contaminate local water bodies. By integrating pervious concrete into urban designs, cities can effectively manage excess water while protecting their water resources.
• Evaluate the environmental benefits of using pervious concrete in urban areas concerning water quality improvement.
  • The environmental benefits of using pervious concrete in urban areas are significant for water quality improvement. By facilitating water infiltration, pervious concrete helps reduce surface runoff, which often carries pollutants like oils, heavy metals, and sediments into waterways. Additionally, it assists in recharging groundwater supplies and maintaining healthier aquatic ecosystems. This proactive approach contributes to better water quality by filtering contaminants and mitigating the adverse effects of urbanization on natural water cycles.
• Design an urban development plan that incorporates pervious concrete for sustainable water management. Discuss its potential impact on the local environment.
  • An urban development plan incorporating pervious concrete could include features such as permeable sidewalks, parking lots, and green spaces designed to maximize water infiltration. By strategically placing these elements throughout the area, the plan would effectively reduce stormwater runoff and enhance groundwater recharge. The potential impact on the local environment includes improved water quality due to reduced pollution entering nearby streams and rivers, decreased flooding risks during heavy rainfall events, and enhanced habitats for local wildlife. Overall, this sustainable approach would create a healthier urban ecosystem while addressing common issues associated with urban runoff.

Related terms

Stormwater management: The process of controlling the quantity and quality of stormwater runoff to minimize flooding and protect water resources.

Runoff:

Water that flows over land surfaces and is not absorbed into the ground, often carrying pollutants into streams, rivers, and lakes.

Water quality improvement: Efforts and practices aimed at enhancing the condition of water bodies by reducing pollution, improving habitats, and restoring ecosystems.