2019, California, Sustainability

Caltrans to Use EPDs in Pilot Tests

Last month, the California Asphalt Pavement Association (CalAPA) hosted a webinar on environmental product declarations (EPDs). During the webinar, the California Department of Transportation (Caltrans) announced an initial list of four asphalt pavement projects that will request EPDs as part of the bid. This is part of a pilot project designed to allow Caltrans to… Continue reading Caltrans to Use EPDs in Pilot Tests

2018, Alaska, American Samoa, Arizona, Asphalt Pavements, California, CNMI, Colorado, Guam, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Pavement Treatments, Utah, Washington, Wyoming

NAPA Issues New Thinlay Guidance

Thinlays are a suite of thin-asphalt overlays designed specifically for pavement preservation. With Thinlays, agencies can extend the life of pavements that are in good to fair condition, decreasing life-cycle costs, improving ride, and decreasing roadway noise. The guide, Thinlays for Pavement Preservation (Information Series 141), provides comprehensive guidance on the proper use of Thinlays,… Continue reading NAPA Issues New Thinlay Guidance

2018, Alaska, Arizona, Asphalt Pavements, California, Emulsions, Hawaii, Nevada, Oregon, Washington

Tack Coat Specifications, Materials, and Construction Practices

Click here to view the PDF of this report. TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 516: Tack Coat Specifications, Materials, and Construction Practices provides state agencies across the United States with guidance as they reevaluate their tack coat specifications, the materials they use, and the practices by which the tack coats are placed.… Continue reading Tack Coat Specifications, Materials, and Construction Practices

2018, Alaska, American Samoa, Arizona, Asphalt Pavements, California, CNMI, Colorado, Guam, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Porous Asphalt, Sustainability, Utah, Washington, Wyoming

Structural Design Guidelines for Porous Asphalt Pavements (July 2018)

Often the design of porous asphalt pavements is focused on how well the pavement will handle water, not traffic. For most parking lots and light-duty surfaces this may be a reasonable approach, but as public agencies look to use full-depth porous asphalt pavements on roadways a traditional structural design methodology is needed. Written by Charles… Continue reading Structural Design Guidelines for Porous Asphalt Pavements (July 2018)