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MatCon is manufactured in a conventional drum mix or batch asphalt plant that has controls necessary to produce high quality state or federal specification hot mix asphalt pavement material. The hot MatCon binder is delivered in asphalt tanker trucks to the hot liquid storage tanks at the asphalt plant. In most cases the aggregates used in the production of MatCon will be similar to those used in high quality asphalt pavements.
Once the aggregates and the MatCon binder have been heated and mixed, the mixture will be deposited into conventional dump trucks. The MatCon will be hauled to the job site and dumped into a standard asphalt paver, which will lay the material on the prepared surface.
Rolling will begin immediately with a vibratory or rubber tired roller and continue until the desired density is achieved. If open graded MatCon is being placed, the compaction will be limited to two non-vibratory passes with a steel roller.
MatCon dense or open graded layers are normally placed four (4) inches deep. This four-inch layer can typically be installed at the rate of one (1), to one and one half (1.5) acres per day.
The construction of dense graded MatCon requires the elimination of nearly all-cold joints. This is accomplished by keeping the paving panels short enough, that when the paver is set back to start another panel, the joint being placed against is still hot and not yet compacted. Once placement has started of the adjacent panel, then the hot joint between the two panels can be compacted, resulting in a seamless connection. When a prolonged break is anticipated, such as the end of a work shift, the Cold Joint Panel will have the following configuration, (See figure 1). The inside of the panel which is adjacent to the previously laid hot panel will be the same thickness, four (4) inches compacted, however the outer edge of this last panel will be two (2) inches thick after compaction. Prior to placing the Overlay Panel a tack coat shall be applied at the rate of 0.05 gallons per square yard. The Overlay Panel will be laid one (1) foot wider than the Cold Joint Panel.
For more information, please contact us at MatConinfo@wilderconstruction.com
1525 E. Marine View Drive | Everett, WA 98201-1927
(425) 551-3100 fax (425) 551-3116
© 2003 Wilder Construction Company
webmaster@wilderconstruction.com
Last updated March 20, 2002
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