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2004•HMAT: Hot Mix Asphalt TechnologyRequires access

PAVEMENT PRESERVATION THROUGH PREVENTION

Kurt Kielsgaard Hansen

Open publisher page 1 citations

Abstract

Hot mix asphalt (HMA) overlays are the most versatile pavement preservation techniques available. The advantages include added structural capacity, sealed cracks, improved ride, enhanced skid resistance, noise reduction, and improved drainage. The thickness of overlays can vary, depending on strength and capacity needs. The thickness and condition of the existing pavement determine the increase in structural value. The article gives examples of non- typical HMA overlays that have been developed and used. It describes how Smoothseal, a thin dense-graded overlay was used in Ohio; the use of asphalt rubber, which is a blend of liquid asphalt and ground tire rubber, in Arizona; and an ultra-thin overlay application in Michigan.

About this research paper

What this paper is about

Hot mix asphalt (HMA) overlays are the most versatile pavement preservation techniques available. The advantages include added structural capacity, sealed cracks, improved ride, enhanced skid resistance, noise reduction, and improved drainage. The thickness of overlays can vary, depending on strength and capacity needs. The thickness and condition of the existing pavement determine the increase in structural value. The article gives examples of non- typical HMA overlays that have been developed and used. It describes how Smoothseal, a thin dense-graded overlay was used in Ohio; the use of asphalt rubber, which is a blend of liquid asphalt and ground tire rubber, in Arizona; and an ultra-thin overlay application in Michigan.

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Available abstract

Hot mix asphalt (HMA) overlays are the most versatile pavement preservation techniques available. The advantages include added structural capacity, sealed cracks, improved ride, enhanced skid resistance, noise reduction, and improved drainage. The thickness of overlays can vary, depending on strength and capacity needs. The thickness and condition of the existing pavement determine the increase in structural value. The article gives examples of non- typical HMA overlays that have been developed and used. It describes how Smoothseal, a thin dense-graded overlay was used in Ohio; the use of asphalt rubber, which is a blend of liquid asphalt and ground tire rubber, in Arizona; and an ultra-thin overlay application in Michigan.

Key concepts: Overlay, Skid (aerodynamics), Asphalt, Asphalt pavement, Natural rubber, Forensic engineering, Geotechnical engineering, Environmental science

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