01521733

Component

http://www.trb.org/Main/Blurbs/170143.aspx

http://www.trb.org/Publications/Blurbs/170143.aspx

Over the last decade, great emphasis has been placed on pavement preservation nationwide. Pavement preservation treatments are an effective means of improving surface quality and extending the service life of pavements. The design of pavement preservation treatments has undergone significant developments over the past two decades, particularly in South Africa, France, Australia, New Zealand, and the United States. In the United States, these treatments have become increasingly important as tools for highway agencies to use in response to the aging and deterioration of the nation’s road network. Various types of surface treatments, when combined, constitute a group of pavement preservation treatments that state agencies typically employ. One of the most cost-effective preservation treatments is the chip seal. A chip seal is an asphalt surface treatment formed by applying emulsified asphalt and aggregate. Chip seal surface (ChipSS) treatments provide a durable surface layer that protects the existing pavement surface from water infiltration and environmental aging–oxidation effects. Additionally, a safety benefit of chip seal surface treatments is that they add skid resistance to the road surface by increasing the roughness of the surface. Most of the research detailed herein discusses findings and advancements made in the field of chip seal design and construction from a series of research projects conducted at North Carolina State University.

01521731

English

pp 38-67

2014-1

Transportation Research Circular

Progress Toward Performance-Graded Emulsified Asphalt Specifications Workshop

Web

Figures; Photos; References; Tables

Aggregate gradation; Chip seals; Emulsified asphalt; Mix design; Pavement performance; Performance tests; Preservation; Test procedures

Highways; Maintenance and Preservation; Materials; Pavements; I31: Bituminous Binders and Materials; I60: Maintenance

TRIS, TRB, ATRI

Apr 8 2014 8:25AM

• Asphalt Emulsion Residue Recovery Update
• Development of a More Rational System for Selecting Emulsions for Surface Treatments
• Development of New Viscosity and Residue Recovery Standards at ASTM International
• Field Sampling and Testing of Death Valley Chip Seal Emulsion Residue: A Case Study
• Techniques for Accelerating Recovery of Asphalt Emulsion Residues at 60°C by Using Thin Film Procedures and Test Methods Suited to the Limited Amount of Residue Obtained to Characterize the Recovered Binder
• Workshop Overview