Accu-Shear
®
The Best System for Foamed Asphalt
The Accu-Shear® is a comprehensive assembly that’s custom engineered to offer the advantages of accurately injecting water, other liquid additives, or a combination of these materials to achieve a superior coating of aggregates during HMA and WMA production.
Liquid Asphalt and Water Do Not Mix...or Do They?
Liquid asphalt and water do not mix naturally, in fact, they will separate if possible. The principle that the Accu-Shear operates under is the shearing process of forcing the two (or more) liquids to mix together.
The shear mill and the mixing action that takes place with the application of horsepower are similar to an emulsion process. By mechanically blending, in lieu of simply injecting, the producer avoids the inherent nature of laminar fluid flow.
By positively blending the additives with the liquid asphalt, the foaming action is DRAMATICALLY INCREASED, and the fusion is maintained for a longer period.
Foamed Asphalt Improves the Quality and Lifespan of Mix
Foamed asphalt is manufactured by the introduction of precisely metered water into the flow of liquid asphalt between the A.C. pump, meter and the plant’s mixing zone. The water, when introduced into the A.C., immediately turns into steam gas which expands the volume of the liquids. The foamed asphalt more completely coats all aggregates, RAP, RAS, -200 or other materials.
Accu-Shear Benefits
- Reduced mix temps save fuel
- Cost-effective tank management
- High return on investment when grade bumping
- Reduction in roller passes
- Increased haul times
- Increased storage time
- Reduced emissions
- Increased workability
- Ability to expand into tomorrow’s market
- SUPERIOR coating of aggregates during HMA and WMA production
Main Assemblies
The Accu-Shear Multiple Purpose Additive Blending System consists of components which emphasize performance, accuracy, ease of installation, operation and adaptability. The system consists of the following main assemblies, all of which are integral to the performance of the system:
Shear/Mill Assembly
- Additive blending shear/mill with heavy duty premium efficiency motor, V-belt drive and variable speed.
- Electric solenoid valve provided for bypassing the shear mill when blending is not required.
- Jacketed A.C. piping complete with jumper lines.
- Multiple injection ports for additional additives.
- Heavy duty support frame assembly.
Water Enclosure Assembly
- T.E.F.C. variable speed motor directly coupled to pump.
- High pressure (up to 1000 psi) piston pump, .2 to 3.5 gpm.
- Two pressure gauges.
- Pressure relief valve.
- Flow meter, non-mechanical, multiple outputs, .15 to 11.0 gpm accuracy.
- 3-way actuator valve with position indication and position switches.
- Heat lamp, 1000 watt, to keep cabinet components from freezing during cold weather conditions.
- Manual flow valves for calibration, draining and isolation.
- Water strainer filtration.
Electrical Enclosure Assembly
- Main power panel disconnect.
- Terminal strip for ease of wiring.
- Control relays for definitive interlocking.
- Motor Circuit Protectors (MCP) with short circuit/overload functionality.
- Variable Frequency Drives (VFD) for the shear mill and water pump.
Sampling Port Assembly
Permits monitoring of blending.
Determine foaming expansion and volume.
Water Tote System
- 275 gallon water tote.
- Fill valve with auto shutoff.
- Heavy duty frame with WATER and ELECTRICAL enclosure mounted.
- Lifting eyes and forklift pads.
System Options
- Junction Box & FRL Assembly
- Single Water Tru-Flo Check Valve
- California Micro Motion Water Meter System
- Standard Mag Water Meter System
- Adjustable or Removable Base
- Safe-T Station
- Junction Box & FRL Assembly
- Duel Water Tru-Flo Check Valve
- California Micro Motion Water Meter System
- Standard Mag Water Meter System
- Adjustable or Removable Base
- Safe-T Station
- Eco-Blend Turbulent Mixer
- Run Bypass Latex Valve
- Junction Box & FRL Assembly
- Duel Water Tru-Flo Check Valve
- California Micro Motion Water Meter System
- Standard Mag Water Meter System
- Adjustable or Removable Base
- Safe-T Station
- Eco-Blend Turbulent Mixer
- Run Bypass Latex Valve
- 4-Port Additive Manifold with Tru-Flo Valves
Accu-Shear Videos
System Benefits
System Overview
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