Segregation of asphalt pavement Cause Analysis

[wangkiky]

<P> segregation of asphalt pavement in the road refers to a region of the main properties of asphalt is uneven, including asphalt content, gradation composition, additive content and porosity of the road, so as to accelerate the asphalt pavement damage. Some highway asphalt pavement early damage, such as damage caused by the water network cracking, deformation and potholes, severe local Rut, local weeping, multi-lateral cracks, texture depth newly paved asphalt road unevenness, etc., with bitumen segregation Related mixture. </P>
<P> From a macro perspective, hot mix asphalt segregation are basically three types: </p>
<P> (1) Gradation Segregation hot mix asphalt improper operation in the production, transportation, paving process resulting mixture aggregate thickness uneven distribution of produce segregation. Porosity of coarse aggregate more concentrated large asphalt pavement, asphalt content is low, resulting in asphalt pavement water damage and a decrease in durability, resulting in fatigue cracks, potholes and flaking and other diseases; fine aggregate more concentrated area porosity small asphalt pavement, asphalt content of large, prone to rutting, weeping and other diseases. </P>
<P> (2) temperature of the hot mix asphalt segregation during transport, paving, since the temperature of the mixture at different positions fall inconsistent, leading to differences in temperature mixture, a temperature segregation. Mixture haul vehicle surface, material transport vehicles on both sides of the trunk and paver wings mix is ​​easy to produce temperature segregation. </P>
<P> (3) aggregate - asphalt isolation large amount of oil mixes prone to such segregation, similar to asphalt mixture analysis drain, SMA mix is ​​easy to produce such segregation. </P>

<p>Related Sites:<br />
<a href="http://roadcuttingmachine.com/blog/4702.html">Philippines Transportation Road Maintenance Department</a><br />
<a href="http://roadcuttingmachine.com/blog/4786.html">Trackless Infrared Asphalt Heater And Generator</a><br />
<a href="http://roadcuttingmachine.com/blog/3832.html">Rain Road Milling Machine Manufacturer</a><br />
<a href="http://roadcuttingmachine.com/blog/1557.html">asphalt paver road use</a>
</p>

[willpwns]

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