Vacuum_TrucksPermeable pavement which is also known as ‘permeable paving’ is a storm water management system that permits rain water to pass through the spaces in between concrete and drain into the underlying soil. With the help of vacuum trucks, porous cement is used to decrease construction costs when replacing standard road concrete or asphalt for cars or pedestrian traffic. Due to the high cost of a normal storm drainage system, porous pavement was engineered to economically and efficiently manage rainwater. Several studies have shown that permeable pavements can minimize the volume of rainwater that runs off, decreasing potential overloading to creeks, streams, and storm drains.

Problem

The conventional way of dealing with rainwater is for it to run off into storm drains and sewer systems or directly into streams, lakes or rivers. Many years ago, it was observed that during flooding, the storm drains in urban communities were not capable of handling the large volume of liquid caused by heavy rain. When a deluge happens, debris and pollution that has piled up on the pavement, roads, car parks, sidewalks and road shoulders are carried along with the rainwater into the drainage system. When this flows directly into a river, serious harm could be caused to the environment.

Permeable Cement Application

Permeable pavements should not be used in areas that experience high traffic flow because the nature of this pavement decreases the weight-bearing capacity it offers. Porous pavement is an excellent method for lighter traffic areas such as driveways, parking areas, sidewalks, alleys, pool decks and emergency access roads. There are several materials currently used in permeable pavements, including: porous asphalt and concrete; plastic grid systems; and block pavers. All of these serve the same function and are employed in similar applications; the primary difference amongst them is in aesthetic appeal.

Problem Solution

This type of pavement offers solutions and several benefits to the community where it is used.

  • Filters – It filters contaminants such as pollution, solvents, dead leaves and pet waste.
  • Decreases Runoff – It allows the rainfall to penetrate the soil and decreases the surface flow of rainwater.
  • Decreases Flooding – It decreases flooding by reducing the volume of water going into storm drains and sewer systems.
  • Increases Groundwater – It allows a slower soil penetration and refills groundwater.
  • Decreases Skidding – When it rains, the composition of this payment decreases skidding incidents.

Permeable cement acts as a filter of most contaminants that have been flushed out from the area around the roads, thus eliminating many threats to humans and the environment.

Vacuum Trucks and Maintenance

To maintain the function of porous pavement, regular maintenance is necessary. Debris accumulation is the greatest enemy to permeable pavement. This reduces the paver’s filtering capacity and will cause clogging at the drainage openings. The only method to prevent this problem is to suck the debris out from the openings. To maintain the integrity of the pavement and to prevent damage to the structures, the Environmental Protection Agency (EPA) recommends the use of vacuum trucks to best manage the cleaning process. These trucks can be used 4 times a year to remove accumulated debris to restore permeability and full performing capability to filter contaminants. To enhance proper functioning, the suctioning prowess of vacuum trucks will significantly prolong the lifespan of porous cement.

Well-installed permeable cement is very effective in managing storm water as well as filtering pollutants from contaminating rivers and streams, decreasing many environmental threats. To decrease this loss of permeability, a strong maintenance program is necessary on a regularly-scheduled basis as performed by vacuum trucks to keep the cement porous and eliminate drainage problems!