Sidewalks and Walkways

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Precast Pervious Concrete

Percoa USA LLC has developed and patented precast pervious concrete. More

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ASTM Committee C09 Celebrates Centennial

The ASTM International committee celebrated its 100th anniversary during a reception and dinner on June 23 at the Sheraton Centre Toronto, Canada. More

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The Path to Success
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The Path to Success
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2009's MIPs

The industry's new products, launches, and technologies will be at World of Concrete. More

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The Bike Path 500

Concrete plays a role in exercise and fitness. More

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Lightening Hardened Concrete

We’ve been asked to bid on an upcoming concrete bridge deck. The project requires a hardened concrete that will resist corrosion. Normally on jobs like this we recommend micro-silica. But in this case, there’s a catch. The bridge is part of a high-profile project that features decorative concrete sidewalks and architectural precast panels. The designer wants a brighter surface on the bridge deck. Is there a way to lighten the concrete? More

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Determining Causes of Concrete Cracking

I do a lot of troubleshooting on residential concrete flatwork -- mainly sidewalks or driveways. Is there a way to tell the difference between structural cracking caused by overload or soil movement, and nonstructural cracking caused by volume changes related to drying shrinkage or thermal contraction? I sometimes suspect that cracks I see were caused by driving a vehicle on the driveway too soon after it was placed, or driving on a sidewalk slab that wasn't intended for that heavy a load. More

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