As many of you know, pervious concrete is used in parking lots, pavements, and airport runways as a measure to help reduce the amount of stormwater present on the pavement following a rain event. Additionally, pervious concrete helps restore local groundwater supplies by allowing stormwater to penetrate the concrete to the ground below.

To view technical articles related to pervious concrete, visit the Concrete Construction Web site, and type the keywords "Pervious Concrete" in the Search Box located at the top of the page.

Continuing with the theme initiated in the last E-Newsletter, this issue's Reader Question is:

What's the most important piece of equipment you own and why?

Again, you can answer this question by e-mailing I will offer some of the feedback in the next issue of the Concrete Construction Business Update E-Newsletter.

On a related note, keep in mind that World of Concrete 2008 is just over four months away. Scheduled for Jan. 21–25, 2008 in Las Vegas, more than 1800 suppliers will offer hands-on demonstrations of the latest and most innovative concrete-related equipment to help you do your job more effectively.

Thanks for all of your feedback in response to the Reader Question I posted in the previous Concrete Construction Business Update E-Newsletter. The question was based upon what concrete-related topic a contractor would like to understand better or learn more about.

Although there was a variety of response, one of the most popular responses focused on the subject of pervious concrete in paving applications.According to the Portland Cement Association, pervious concrete contains narrowly graded coarse aggregate, little to no fine aggregate, and insufficient cement paste to fill voids in the coarse aggregate. The result is a low water-cement concrete with low slump that visually resembles popcorn. Pervious concrete is held together by the cement paste at the contact points of the coarse aggregate particles resulting in a concrete with voids in the range of 20% to 35%, as well as a high permeability.

I encourage you to register for World of Concrete at today.

Tim Gregorski
Editor in Chief