Rolling Pattern Challenges Maximize efficiency: monitor starts and stops • Blue indicates the compactor traveling too far onto the previous pass: inefficient • Red indicates the compactor stopped short of the complete pass: improper pattern

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Rolling Pattern. 1. Paver speed • Should be continuous, smooth operation • Number and speed of rollers must be balanced with paver speed. 2. Rate of mix delivery to the job ... • Low asphalt binder content • High percentage of crushed aggregate – both coarse and fine • High amount of mineral filler or

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Additionally, the final compactability of the mix is affected by the type of rollers, the number of rollers, and the rolling patterns used during the compaction process. Asphalt Mixture and Pavement Variables There are a wide variety of asphalt mixtures currently being used in North America.

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On some states like Maine,the rolling patterns are the following,either vibratory or static steel wheel rollers for breakdown rolling,pneumatic(rubber tired) roller for intermediate rollers and either vibratory or static steel wheel rollers for finish rolling.For example,Hypac C766D vibratory roller or Hypac C350D static steel wheel for breakdown rolling,Hypac C560H pneumatic roller for ...

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Successful asphalt paving projects don't happen by accident. They are the result of careful planning and appropriate preparation. From proper paver setup to achieving optimum mat temperature and conducting the rolling pattern at just the right time – each step in …

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tr-4276c (7-21) optimum-rolling pattern for asphalt density acceptance by electrical impedance measurement method ... establishment of optimum-rolling pattern optimum-rolling pattern growth curve type _____ % density density, pcf temp, ºf 1. ...

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Rolling Pattern •Speed and lap pattern for each roller •Number of passes for each roller •One trip across a point on the mat •Set minimum temperature each roller finishes IMPORTANT: •Paver speed must not exceed compaction!!! •Paver makes single pass •Roller pattern requires 3-7 passes ishes Idaho Asphalt Conference 18

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rolling applications • Warm Mix Asphalt is a rapidly growing mix type which is easier-to-compact on most applications • Xenon lighting (on rollers) provides superior job site visibility, ... Uniform Rolling Patterns 5 pass pattern. 34 Work Smart . Match Amplitude to Application 35

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Figure 1. The paving widths and depths in Europe are often wider and thicker than those in North America. In this example of rolling patterns, the breakdown roller has time to roll from the outside toward the center of the road in one, two, three, four passes before making a …

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COMPLETE ROLLING PATTERN #3 #1 #2 #4 #6 #8 #5 #7 8 ASPHALT COMPACTION // LONGITUDINAL JOINT COMPACTION During Pass Three, position the compactor so the drums slightly overlap the longitudinal joint with most of the drums on the hot mat. Since the overlap onto the cold mat is small, you can operate with the drums vibrating.

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Asphalt concrete mixtures cool quickly so it's important to compact while the mix is hot. Typically, asphalt comes out of the plant at about 300° F. ... Scherocman says this rolling pattern ...

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"During the three-day training, attendees will actually lay a mat and practice rolling patterns," he points out. "We have a lot of guys who keep coming back year after year." ... asphalt …

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How to roll hot asphalt. Initial passesIf you found this video helpful you might like to:Donate: paypal.me/bootsowenSupport: https://

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delivered influence the temperature of the asphalt when compacted. Mix temperature is the most critical element in compaction. Keeping compactors in the proper rolling zone to achieve target density requires the right rolling patterns. Best Practices of Compaction There are several procedures that compactor manufacturers teach operators to increase

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