NovaChip

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NovaChip
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What is NovaChip

• Ultra-thin polymer modified asphalt
• surface treatment.
• Combines open graded hot mix asphalt
• with emulsified asphalt polymer-modified
• membrane.

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Features Benefits

• Superior bond to the existing surface
• Increases skid resistance, reduces noise
• Ultra-thin application eliminates the need for
  utility adjustments.
• Minimal traffic disruption, requires a single
  lane closure
• Expected life cycle of up to ten years with crack
  sealing.

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Features Benefits (cont..)

• Does not affect overhead clearances on bridges,
  overpasses, signs, and other structures.
• Reduces hydroplaning and reduces spray on wet
  roadways.

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Equipment

• Specialized NovaChip paver
• Rollers
• Water truck

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Materials

• Open graded hot mix asphalt
• NovaBond, a polymer modified asphalt
• emulsion.

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History of NovaChip

• 1988 - First trial in France
• 1992 - Introduced in the United States
• 1992-93 - Projects in TX, AL, PA, and NJ.

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Application Rates

• Novabond(TM) emulsion membrane 0.13 - 0.25
  gal/sy
• Ultra-thin hot mix asphalt overlay
• Minimum application rates Type A - 45-55
  lbs./sy Type B - 50-65 lbs./sy Type C -
  55-70 lbs./sy
• Total Thickness 3/8 to 3/4
• Maximum recommended thickness 1-1/4

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Road Preparation for NovaChip

• Pavement should be in reasonably good
• condition.
• Pavement should be swept clean
• Pavement should be dry before lay-down.
• Crack seal all cracks ¼ wide or more
• Repair all failed areas with full depth
• Patching.
• Cover all utilities

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Applications for NovaChip

• Asphalt pavements
• Concrete pavements
• Airports
• Interstate highways
• Turnpikes

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NovaChip The Process
PHASE 1 during application (3/8 nominal size)
The Novabond Emulsion Wicks Up Around the HMA
Aggregates
Surface of Mix
7.5-10 mm coating on mix
Existing Pavement
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Skid resistance test - PA
SR 422 Chester Montgomery Counties
NovaChip applied to existing PCC surface
Aug. 93 before - Dec. 93 after
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NovaChip Paver
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Receiving hopper. 4 screw augers help stop
segregation
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NovaBond is sprayed onto road surface inches in
front of the hot mix
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Muhlenberg Township, PA
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Full depth patching crack sealing before
NovaChip
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Paving Of NovaChip
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Rolling in static mode to seat aggregate material
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Care is taken when rolling along curb lines
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NovaChips open gradation allows water to
penetrate and disperse faster
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East Hanover Township, Lebanon County,
Pennsylvania Old Rt 22 before NovaChip
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Only very bad sections had full depth removal
repair
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Tack coat applied before leveling course of HMA
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Loaded trucks wait their turn to go into the paver
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Hot mix asphalt leveling course placed on Rt 22
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Leveling course before compaction
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Steel drum roller compacting hot mix asphalt
leveling
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Liquid NovaBond placed directly in front of
NovaChip hot mix screed
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NovaChip Lay-down on Rt.22
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Open graded NovaChip placed on hot mix asphalt
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NovaChip open graded mix
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NovaChip laid down ¾ inch compacted
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Roller only seats the aggregate in the NovaChip
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Hand work is sometimes necessary with NovaChip
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Center joint hardly noticeable
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Alatchua County, FL

• Project Constructed 1999

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Back of tamping screed
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NovaChip
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5 Minutes after lay down loaded trucks cross
pavement
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No material deterioration or displacement
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Traffic can be returned to the pavement quicker
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Orange County, Florida Rt 440
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Concrete two lane highway, pavement joints 2
inches wide.
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Expansion joints routed filled with flexible
hot mix asphalt.
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South lane NovaChip complete
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Traffic flow was uninterrupted
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Joint maker on NovaChip paver
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NovaChip pavement mat
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Evaporating steam from the NovaBond
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Finished pavement center
joint
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Reduces spray hydroplaning
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Traffic moves down Rt. 440
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THANK YOU

• E.J. Breneman LP.
• 1117 Snyder Road
• West Lawn, PA 19609
• Phone [phone] or 610-636-0121
• e-mail mpolak_at_ejbreneman.com
• web site www.ejbreneman.com