Pervious concrete

About: Pervious concrete is a research topic. Over the lifetime, 2920 publications have been published within this topic receiving 27720 citations. The topic is also known as: porous concrete & permeable concrete.

Effect of Rejuvenation Methods on the Infiltration Rates of Pervious Concrete Pavements

Abstract: Pervious concrete pavements in low-traffic urban areas such as parking lots reduce storm water runoff and also minimize water pollution. However, there are concerns about their expected clogging and consequential reduction of hydraulic performance in the long run. The pervious concrete pavements can be declogged using rejuvenation methods such as vacuum sweeping, or pressure washing, or a combination of both. This paper presents the results of our study that focused on the hydraulic performance of pervious concrete pavements. The study included field and laboratory investigations to evaluate the infiltration capacities of the pervious concrete cores and the underlying soils and the usefulness of rejuvenation methods in restoring their hydraulic performance. As a result of this research program, a new field test device, called the embedded ring infiltrometer, was developed for evaluating the infiltration rates of newly installed pervious concrete pavements. The results of this study indicate that the rejuvenation methods can substantially restore the performance of pervious concrete pavements for better management of storm water.

Pervious Concrete with Titanium Dioxide as a Photocatalyst Compound for a Greener Urban Road Environment

Abstract: The United States is facing the problem of controlling air pollution from vehicle emissions, especially in growing urban areas This study investigates the photocatalytic effect of titanium dioxide (TiO2) applied onto pervious concrete pavement to remove some of these pollutants from the air, so that pervious concrete pavement can be installed for two sustainable applications: storm water management and air pollutant removal The photocatalyst, TiO2, activates with UV radiation to oxidize air pollutants, such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) This study compared different methods to apply TiO2 onto the surface of pervious concrete and measured the photocatalytic activity of the concrete, the infiltrating characteristics of the pervious concrete, and its ability to withstand environmental impact High pollutant reductions were seen with a driveway protector mix, a commercial water-based TiO2 preparation, TiO2 in water, a cement–water slurry with low cement concentration, and the commercial PURETI coating It was found that nitrogen oxide (NO) was efficiently removed with each of these treatments, while VOCs displayed more variability in removal efficiency Different coating methods can cause different degree of infiltration rate reduction depending on the specific design of coating materials while none of the application methods decreased the infiltration rates below levels applicable for standard hydrological design When pervious concrete was compared to traditional concrete, pervious concrete showed higher NO reductions