More Articles for aggregate gradation

Size Matters in Mix Grades and Aggregate Shapes

Contributed - May 06, 2014

Size Matters in Mix Grades and Aggregate Shapes

Whether it’s dense-graded, open-graded or gap-graded mix or stone-matrix asphalt, don’t forget their impact on compaction. Many contractors look to temperature when contemplating compaction needs. Yet, some off-site specifications also have a significant impact on the jobsite. These include mix design ...

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Plant Management of RAP/RCA

Better Roads Staff - Nov 06, 2013

Plant Management of RAP/RCA

Processing and storage makes reclaimed asphalt pavement and recycled concrete aggregate useful as aggregate.   By Tom Kuennen, Contributing Editor   In the past two decades, reclaimed asphalt pavement (RAP) and recycled concrete aggregate (RCA) have taken their places among materials commonly used for ...

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Quality Management

Better Roads Staff - Sep 09, 2013

Quality Management

How to handle materials, from the source to the site   by Tom Kuennen, Contributing Editor   You’ve designed and are building a pavement to resist fatigue and thermal cracking, stripping and raveling in ways that are suggested in Better Roads’ five-part series. But ...

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Road Science

Better Roads Staff - Sep 06, 2012

Road Science

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 ...

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Highway Contractor

Better Roads Staff - Dec 04, 2011

The Greening of America's Highways Words like sustainability, carbon footprint and environmental stewardship have dominated the construction industry for the past half-decade, driving some highway engineers to protest the buzz and beg their information sources to go back to covering advances ...

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