More Articles for hot-mix asphalt

Materials that Make a Difference

Better Roads Staff - Feb 10, 2014

Materials that Make a Difference

This once every-three-years trade show boasts innovative materials that deserve a closer look.   By Tom Kuennen, Contributing Editor   Innovative materials for road and bridge construction will be exhibited at ConExpo-Con/Agg 2014 in March in Las Vegas, and many of them are worth ...

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Smooth Going

Better Roads Staff - Oct 02, 2013

Smooth Going

How new technology is changing in the quest for smooth pavements Surveys consistently show that smoothness is the No. 1 criterion by which road users judge pavements. Other studies have found pavements that are built smooth stay smoother longer and provide ...

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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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Loss of Cover

Better Roads Staff - Jul 05, 2013

Loss of Cover

Decoding the secrets of asphalt stripping and raveling   By Tom Kuennen, Contributing Editor     Raveling describes the loss of aggregate from the driving surface of a bituminous concrete pavement. Loss of aggregate through raveling encourages pothole formation and cracking, which can introduce water ...

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To Prevent Failure, Begin with Better Bases

Better Roads Staff - May 06, 2013

To Prevent Failure,  Begin with Better Bases

Fatigue cracking usually links to inadequate road foundations By Tom Kuennen, Contributing Editor Fatigue cracking in bituminous pavements is experienced by the public so often that it is considered just part of driving. Motorists endure it and assume it’s just part of ...

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Pavement Preservation Coded in MAP-21

Better Roads Staff - Feb 07, 2013

Pavement Preservation Coded in MAP-21

    For the first time, pavement preservation is part of national surface transportation reauthorization legislation, which now explicitly supports preservation and asset management. Pavement preservation techniques are promoted as cost-effective and environmentally sustainable strategies designed to extend the life of existing pavements ...

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Highway Contractor

Better Roads Staff - Jul 03, 2012

Highway Contractor

Smart Rollin'   The developing genius of Intelligent Compaction   IIntelligent Compaction (IC) for hot mix asphalt is a work in progress. IC rollers are valuable quality control tools that go a long way toward solving the shortcomings of the conventional process. With some ...

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Road Science

Better Roads Staff - Jun 09, 2012

Road Science

Spreading the Wealth Asphalt emulsions mix oil with water As pavement preservation techniques tighten their beachheads in state, county and municipal road agencies, new attention is focused on surface treatments, thin asphalt surfacings and the asphalt emulsions that make them possible. Asphalt emulsions ...

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Applications and Innovations

Better Roads Staff - Dec 02, 2011

Applications and Innovations

Mill-And-Fill Math Making sure the numbers add up is the first step to a successful job That mill-and-fill job up for bid may seem the exact boost your company needs right now. It may very well be, says Terex Roadbuilding’s John West, but ...

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Road Science Tutorial

Brooke Wisdom - Sep 01, 2010

Road Science Tutorial

One and One is One Two lifts can become a single, strong layer. By Tom Kuennen, Contributing Editor With two-lift hot mix asphalt paving, it’s a case of 1+1=1. As more durable hot mix asphalt pavement designs are explored in the United States, two-lift ...

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INDOT new paving specs allow more RAP

Tina Grady Barbaccia - Apr 22, 2010

In honor of Earth Day, the Indiana Department of Transportation (INDOT) announces new paving specifications that allow for additional use of recycled materials. By increasing the amount of reclaimed asphalt pavement and recycled roofing shingles within asphalt mixes, INDOT anticipates ...

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Highway Contractor: RAP -- Making new fans across the country

Brooke Wisdom - Feb 01, 2010

Highway Contractor:  RAP -- Making new fans across the country

by Daniel Brown, Contributing Editor With workability, environmental benefits and solid performance reports,Reclaimed Asphalt Pavement — RAP — is becoming a bigger part of the mix.   It’s a trend that’s sweeping the nation: using more reclaimed asphalt pavement (RAP) in hot-mix asphalt. ...

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