2014 Asphalt Today

Figure 2. APA specimens before loading

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Figure 2. APA specimens after loading.

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Figure 3. Indirect tensile strength texting for AASHTO T 283.

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Figure 4. Laboratory scale asphalt binder foaming device.

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Figure 7. The University of Akron workability device.

Asphalt April 2015

Taking care of aggregate one of the keys to WMA foam

VDOT’s modified EP-5 epoxy overlay waterproof membrane was placed on the travel and passing lanes of the SBL bridge on I-85.

Asphalt April 2015

Thermoplastic polymer-modified asphalt overlays work in Va.

In all, 232,000 tons of asphalt base and surface mixes were paved and compacted along the 6.2-mile stretch of Kentucky’s Highway 60.

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Antigo Construction Inc. fractured the 10-in.-thick concrete pavement prior to receiving the overlay to minimize the occurrence of reflective cracking.

Asphalt April 2015

Crews execute extensive asphalt-paving work on Hwy. 60 in Kentucky

Asphalt April 2015

Addition of lime to Superpave shows benefits

If you speed up the drum and have the proper flights in the drum, you prevent the aggregate from dropping prematurely. This creates a better aggregate veil, which allows it to be heated better by the dryer. The technique translates directly to the roadway.

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“Everything looks good,” said Starling. “That was one of the easier FC-2 jobs I’ve been on. Once they started running, they never had any problems with the mix.”

Asphalt April 2015

Contractor tends to dangerous sections of N.C. road

Asphalt April 2015

NAPA surveys the wants and needs of its membership 

The objective of this study was to evaluate how increasing the volume of virgin binder, using a softer grade of virgin binder or using a WMA chemical additive affected the durability and performance of RAP mixtures. 

Asphalt April 2015

Latest NCAT research supports increase in RAP content

Overlay Init