More Articles for stone-matrix asphalt (SMA)

In the Groove with Diamond Grooving and Grinding

Contributed - Jul 02, 2014

In the Groove with Diamond Grooving and Grinding

Diamond grooving and grinding are being used to restore rough or polished concrete pavements to ultrasmooth conditions and quell noise – but at a price. By Tom Kuennen, Contributing Editor Diamond grooving and grinding of aging portland cement concrete (PCC) pavement renews ...

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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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The Magic of Rubberized Asphalt

Better Roads Staff - Mar 07, 2014

The Magic of Rubberized Asphalt

As prices for asphalt cement (AC) and polymer have shot up dramatically, agencies and contractors are looking for ways to hold the line on the cost of asphalt pavements.   By Daniel C. Brown   The number of transportation agencies that use recycled tire ...

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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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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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Mix Optimization

Tina Grady Barbaccia - May 06, 2013

Mix Optimization

A formula for greenbacks and green roads When it comes to mix-design optimization, two goals stand out: dollars to be saved and how sustainable a road you can build. This means doing your homework and understanding calculations in mix design, explains ...

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Perpetual Pavement an Inch at a Time

Better Roads Staff - Dec 01, 2012

Perpetual Pavement an Inch at a Time

NATIONAL ASPHALT PAVEMENT ASSOCIATION NAPA SPECIAL FEATURE   Perpetual pavement is a concept that was developed and has traditionally been marketed for high-volume applications like freeways and interstates. There is no reason, however, that this life-extending design approach can’t be applied to lower-volume ...

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