- Soil and Groundwater Pollution Control and Remediation
- Soil Mixing using Waste Byproducts
- Clay/Water Interactions
- Collapsible Soils
Title: Enhanced Pervious Concrete as a Permeable Reactive Barrier Technology
Funded by: UM Intellectual Property Fast Track Initiative
This project will complete research to convert the novel application of using actively enhanced pervious concrete (AEPC) as a permeable reactive barrier (PRB) for polluted groundwater treatment into a licensable technology. Preliminary results indicated a high potential for success with a provision patent filed by UMKC in spring 2014. In the United States about 131 million tons of fly ash is produced annually, of which only 50% is beneficially reused. Strict air regulations have resulted in the production of fly ash containing high amounts of unburnt carbon and sulfur, which are specifically forbidden in most current reuse methods. Fly ash is most commonly used as a supplementary cementitious material in concrete and for stabilization of clays. The unburnt carbon is activated which is problematic for air-entrainment in concrete, while high sulfur levels produce deleterious expansion when used for soil stabilization. Fortunately, the high sulfur and carbon levels are ideal for removal of contaminants in groundwater. Coupling these waste fly ash materials in pervious concrete used as a permeable reactive barrier technology, utilizes the sorptive capacity of both fly ash and carbonates within the mix. This technology has the potential to replace 25-50% of the shallow in-situ passive treatment technology within the US, and has much greater applications worldwide.