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PAVEMENT PRESERVATION WITH THIN OVERLAYS

Kurt Kielsgaard Hansen

Open publisher page 4 citations

Abstract

Hot-mix asphalt overlays are probably the most versatile way to add structural capacity, seal cracks, improve ride, enhance skid resistance, reduce noise, and improve drainage. This article describes various thin overlays, which are generally between 0.5-inch thick and 1.5 inches, and when to use them in the life of a deteriorating roadway. Smoothseal comes in two types, A and B, and is described as a good example of a thin, dense-graded overlay. It has been used in Ohio for many years. Asphalt rubber is a blend of liquid asphalt and ground tire rubber, used throughout Arizona. Michigan has developed an ultra-thin overlay as an alternative to micro-surfacing. It is similar to a sand asphalt mix.

About this research paper

What this paper is about

Hot-mix asphalt overlays are probably the most versatile way to add structural capacity, seal cracks, improve ride, enhance skid resistance, reduce noise, and improve drainage. This article describes various thin overlays, which are generally between 0.5-inch thick and 1.5 inches, and when to use them in the life of a deteriorating roadway. Smoothseal comes in two types, A and B, and is described as a good example of a thin, dense-graded overlay. It has been used in Ohio for many years. Asphalt rubber is a blend of liquid asphalt and ground tire rubber, used throughout Arizona. Michigan has developed an ultra-thin overlay as an alternative to micro-surfacing. It is similar to a sand asphalt mix.

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OpenAlex reports 4 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Hot-mix asphalt overlays are probably the most versatile way to add structural capacity, seal cracks, improve ride, enhance skid resistance, reduce noise, and improve drainage. This article describes various thin overlays, which are generally between 0.5-inch thick and 1.5 inches, and when to use them in the life of a deteriorating roadway. Smoothseal comes in two types, A and B, and is described as a good example of a thin, dense-graded overlay. It has been used in Ohio for many years. Asphalt rubber is a blend of liquid asphalt and ground tire rubber, used throughout Arizona. Michigan has developed an ultra-thin overlay as an alternative to micro-surfacing. It is similar to a sand asphalt mix.

Key concepts: Overlay, Asphalt, Skid (aerodynamics), Asphalt pavement, Natural rubber, Seal (emblem), Engineering, Geotechnical engineering

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