Road Science

Better Roads Staff - Sep 06, 2012

The Second Time Around Recycled materials need analysis, characterization By Tom Kuennen, Contributing Editor There is no stopping the growth of recycled and reclaimed materials in pavements. The use of reclaimed asphalt pavement (RAP), reclaimed asphalt shingles (RAS), recycled concrete aggregate (RCA), and recycled ...

RoadScience

Better Roads Staff - May 06, 2012

A Concrete Solution: Admixtures Change PCC Performance By Tom Kuennen, Contributing Editor Portland cement concrete (PCC) is the most widely used structural material in transportation infrastructure, and it’s widely used for pavements as well. But the control of freshly mixed PCC properties is ...

Road Science

Better Roads Staff - Oct 04, 2011

It's a Small, Smart World Nanotech era draws closer By Tom Kuennen, Contributing Editor Nanotechnology offers long-term promise to boost performance of our highway, road and bridge infrastructure. New research is expanding and new applications are materializing. More recently, the long-term environmental impacts ...

RoadScience

Brooke Wisdom - Jan 01, 2011

Ternary Concrete Mixes Offer High Performance Reclaimed industrial byproducts play role in high-performance and ultra-high-performance mixes By Tom Kuennen, Contributing Editor Ternary and quaternary portland cement concrete mixtures – those incorporating three or four products into their cementitious components – are providing transportation ...

Road Science Tutorial

Brooke Wisdom - Apr 01, 2010

Two for the Price of One Recycled concrete aggregate proves its value; but it demands an engineered approach. By Tom Kuennen, Contributing Editor Recycled concrete aggregate (RCA) is a valuable resource for road owners and builders, both in terms of lowering costs and ...