When it rains, it's porous / Concrete-slab driveways may soon be a thing of the past as new paving products address water runoff problems. By Judy Richter, Special to The Chronicle Dec 23, 2006.

One driveway at a time, many green-minded homeowners and communities are opting for permeable paving options instead of traditional asphalt. Menu Newsletters Today's Paper Newsletters ...

Porous driveways offer environmentally friendly, back-to-the-future approach to addressing runoff November 1, 2016 More than 8 years ago This precast concrete paving material allows some rain ...

What makes pervious concrete so different from conventional concrete is what also makes it so challenging to place. A porous, gap-graded, permeable concrete, pervious is virtually unpumpable because ...

These driveway and patio surfaces can all help reduce runoff--while looking good. Clockwise from top: 1. Pervious Concrete. Manufacturers leave the smallest particles out of the mix, resulting in ...

Hamann Construction, a general contractor in El Cajon, Calif., has built hundreds of concrete tilt-up and block building projects ranging in size from 5,000 square feet to over 250,000 square feet ...

Concrete is porous, so when water seeps into the surface and freezes, it expands, causing the concrete to crack and flake. ... How to Fix Spalling Concrete in Your Driveway.

Pervious concrete is more durable than its asphalt counterpart and is a good choice for driveways. It costs between $6 and $15 per square foot plus labor to install pervious concrete or around ...

For concrete, apply a cleaner that is specifically formulated for driveways, like Simple Green Oxy Solve Driveway Cleaner from Amazon. These cleaners break down oil and grease without harming the ...

And pervious concrete won on an initial cost basis by $10,000. In total, this project resulted in the transformation of 28,900 square feet of impervious surfaces to pervious.