Asphalt Paving Blog

4 Benefits of Porous Asphalt For Your Home, Business or Municipal Project

Posted by J. Mrugacz on Apr 2, 2014

The term “porous” refers to holes in the asphalt material that provides a way of managing storm water or drainage challenges.  Porous material is most often used for parking lots to allow water to drain through the surface and be infiltrated into the soil below the pavement. Not only a low-maintenance option for homes and businesses with drainage problems; porous has also been an ideal option for municipal projects that face recent storm water regulations. Common uses include sidewalks, driveways, fire lanes, road shoulders and roadways.

4 Things a Business Owner or Contractor Should Know About Permeable Pavement

Posted by J. Mrugacz on Mar 14, 2014

Choosing a paving option for your project is critical to its success. Bad paving choices can lead to poor drainage and expensive repairs. Porous asphalt can be the ideal paving solution for many commercial applications.

The Differences of Pervious, Permeable, and Porous Asphalt

Posted by J. Mrugacz on Feb 25, 2013

Have you ever felt like the terminology of a subject strands you in an unknown land?  Take asphalt -- if you’re just learning about it, terminology can be a barrier.  Those in the industry don’t think twice about terms like “hot-mix” or “sealcoating,” but for the layman, these can be confusing.

Pervious and Permeable and Porous, Oh My! 

Some terms that often get mixed up are pervious, permeable, and porous.  These sound similar, like they all mean the same thing.  In fact, if you look up “pervious,” “permeable” is part of the definition!  Both mean a substance that allows liquids or gases to pass through (as opposed to being a solid barrier).  These terms are also used synonymously in asphalt. Pervious or permeable pavements have connected spaces that allow water to percolate through the surface. 

“Porous” has a similar, but slightly different, meaning.  Holes or spaces in the surface allow water in, but these are not necessarily connected.  While fluids could get in, they have nowhere to go from there and can't easily percolate down to the water table.  This distinction, however, is not generally recognized in the industry. 

Pervious Pavement - A Small Choice that can make a Big Difference!

Posted by Monica Madsen on Jan 28, 2013

With each year, smart business owners look for ways to maximize their return on their investment.  One thing to consider is getting a “green” reputation (and getting ahead of environmental regulations).  And one way to decrease a negative environmental impact is to use pervious pavements for your parking lots and thoroughfares.

What are pervious pavements?

It can be somewhat difficult outside the industry to understand the differences between pervious, porous, and permeable pavement and asphalts.  The terms are often used interchangeably.  This is because the ultimate goals achieved are similar – water, instead of simply running off, can percolate through.  Allowing it to do so helps decrease flooding, better manage storm water because less of it has to rush into gutters and sewers, helps keep water tables filled, and even helps the environment by removing toxic substances via the percolation process.  While they all accomplish the same goals, there are some differences between them.

Pervious pavement is generally considered the umbrella term for all the types of paving that accomplish these goals.  Within that, you have porous or permeable pavements, such as porous asphalt pavement, which allow the water to percolate through the entire surface area.  You also have permeable pavers, which are really impermeable except that they allow water to percolate through wherever they’re joined to one another.  So, in this case, the paving stone itself is not porous, but using paving stones still allows water to percolate through a lot more than non-pervious pavements because of how many paving stones are used and thus how many joins there are throughout the surface.  Paving stones are often more decorative and more expensive.  However, regardless of which type of pervious pavement is used, the benefits to the environment are similar.

Permeable Pavement to be used in Milwaukee County Roads

Posted by J. Mrugacz on Jan 18, 2013

The Milwaukee Metropolitan Sewerage District (MMSD) is continuing its work on keeping Milwaukee “green.” In July 2012, an article in the Milwaukee Journal Sentinel revealed that MMSD began required rooftop plants and the installation of other “green infrastructures” to help collect and absorb storm water. MMSD announced in a recent article that permeable pavement will be used along portions of three Milwaukee county roads.

One goal of this work is to improve the water quality in nearby wetlands and along rivers. “Reducing the volume of soil and sand eroding from the shoulder and capturing storm water laden with pollutants washed off the pavement will improve water quality.”