More Articles for ASTM

The ABCs of RCC

Better Roads Staff - Dec 04, 2013

The ABCs of RCC

Roller-compacted concrete advances its invasion of pavements As roller-compacted concrete inexorably penetrates existing asphalt pavement markets, research into their composition and performance is ramping up as specifications are being fine-tuned by ASTM. Up to the past decade, roller-compacted concrete (RCC) mixes principally ...

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Special Transportation Research Board 2013 Report

Better Roads Staff - Apr 03, 2013

Special Transportation Research Board 2013 Report

‘Bio-Binder’ Green Modifiers Star at TRB   By Tom Kuennen, Contributing Editor   The emerging universe of biologically based modified asphalts got significant exposure at the 92nd annual meeting of the Transportation Research Board (TRB) in Washington, D.C. Better Roads was there. More than 11,700 ...

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In Court

Better Roads Staff - Dec 01, 2012

In Court

"Differing site conditions" ... not always an obvious call   By Brian Morrow     The uncertainty that contractors face regarding unknown subsurface conditions can be their greatest risk. This type of risk is inherent on most road and heavy construction projects, commonly because testing ...

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Road Science

Better Roads Staff - Jul 03, 2012

Road Science

On the Face of It   Aggregate performance depends on its surface     The higher-performing bituminous and portland cement concrete mixes of today are becoming more complex, and to ensure performance, more scrutiny is being given to the chemistry and composition of the aggregates ...

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New ASTM standard proposed for RAP highways base, sub-base

Tina Grady Barbaccia - Feb 24, 2010

A new ASTM standard is being proposed for recycled asphalt pavement materials for base and sub-base for highways and airports. The proposed standard (WK26824) -- New Specification for Standard Specifications for Recycled Asphalt Pavement Materials for Base or Subbase for Highway ...

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