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Choosing the Right Machine for Proper Soil Compaction

Jul 02, 2014

Choosing the Right Machine for  Proper Soil  Compaction

Experience, type of soil, method specification and available equipment are all part of making this decision. (Editor’s note: This excerpt first appeared in The Cat Paving Products Guide to Soil Compaction. The book is available on Amazon.com and through participating Cat ...

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How one Iowa engineer maintains a county with mostly gravel roads

Jul 02, 2014

How one Iowa engineer maintains a county with mostly gravel roads

Located in the heart of the Mississippi River Valley; Clayton County, Iowa, is a far cry from the expansive flatlands associated with the rest of the state. Bordering Wisconsin, the county is exemplified by its abundance of streams and rivers, ...

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Down to the Dirt: Intelligent and new technologies are revolutionizing soil compaction

Jun 06, 2014

Down to the Dirt: Intelligent and new technologies are revolutionizing soil compaction

Intelligent compaction – matched with more productive operational control systems – is revolutionizing the commonplace world of dirt rolling. Yesterday’s slow-but-steady soil compactor now communicates with satellites, logs performance, saves fuel, pollutes less and is more productive. It’s all done natively, ...

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Fighting Thermal Segregation

Jun 05, 2014

Fighting Thermal  Segregation

A temperature bar can provide a thermal profile in real time. A system that allows detection of thermal segregation in the asphalt mat – in real time – and records a thermal profile is being used now by some state Departments ...

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Geosynthetics of all types speed construction

May 07, 2014

Geosynthetics of all types speed construction

Geosynthetics of all types speed construction allowing bridges, highways to be built faster and enhance pavement performance Geosynthetics comprise a family of value-added products that allows bridges, highways and roads to be built faster, cheaper and to last longer. Some geosynthetics enhance ...

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Geosynthetics speed construction

May 01, 2014

Geosynthetics speed construction

Geosynthetics Speed Construction While Enhancing Pavement Performance Geosynthetics comprise a family of value-added products that allows highways, roads and bridges to be built faster, cheaper and longer lasting. Some geosynthetics enhance pavement longevity by separating good materials from bad. Some promote water flow ...

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Seal or no Seal? That is the Question

Apr 12, 2014

Seal or no Seal? That is the Question

The debates continue, but here are some tips to determine the most effective strategy for your agency, whether it’s seal or no seal, for pavement performance and life-cycle cost. In the long run, does it pay for an agency to seal ...

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Public vs. Private Distinction

Mar 07, 2014

Public vs. Private Distinction

Why knowing the allowable timeline to bring a lawsuit is important The distinction between a public and private work of improvement is an important one for contractors. Public works of improvements are subject to laws that do not affect private projects. For ...

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Special Report from TRB 2014: Warm Mix Asphalt

Mar 07, 2014

Special Report from TRB 2014:  Warm Mix Asphalt

The incursion of warm-mix asphalt (WMA) into the nation’s bituminous pavements continues unabated. The latest National Asphalt Pavement Association (NAPA)/Federal Highway Administration (FHWA) survey of asphalt producers’ use of recycled materials and warm-mix asphalt find that nearly a quarter of all ...

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The Magic of Rubberized Asphalt

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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Dredged Material Mostly Clay, Sand

Feb 28, 2014

Dredged Material Mostly Clay, Sand

Dredge material today is seen as a valuable resource, and innovative methodologies for its beneficial use are in the infancy stage of development worldwide, Cole and Kobelo write. “It has been determined that due to the physical and chemical composition ...

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The Cheaper the Better?

Feb 10, 2014

The Cheaper the Better?

Government awards contract to second lowest bidder based on ‘Best Value’ determination   In a recent government contracting decision — Matter of IJC Corporation (Dec. 31, 2013) — a bid protest about a contract award to a second lowest bidder based on ...

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