Implementation of a Grinding Simulation Tool in the Profile Viewing and Analysis ProVAL Software Too

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Implementation of a Grinding Simulation Tool in
the Profile Viewing and Analysis (ProVAL)
Software Tool

• George Chang, PhD, PE
• Transtec Group
• Project Manager
• gkchang_at_theTranstecGroup.com

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Presentation Outlines

• Smoothness vs. Ride
• Hot Spot and Should-Grind Locator
• Grinding Simulation in ProVAL
• Smoothness Assurance

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Rolling Straightedge
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Modern Profilograph
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Manual Trace Reduction
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Profilograph Responses
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Profilograph Response
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Profilograph Output
Profilograph output can be used to 1. Estimate
smoothness. 2. Determine a grinding strategy. 3.
Help improve construction practice for smoothness.
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Profilograph Output
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Profilers
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International Roughness Index
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Smoothness Assurance Module
IRI Sensitivity
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Ohio Turnpike Third Lane
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Profiler Output
Profiler output can be used to 1. Estimate ride
quality. 2. Determine a grinding strategy. 3.
Help improve construction practice for ride.
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Elevation Profile
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IRI Filter Response
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Rectified Response
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Fixed Interval Report
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Continuous Roughness Report
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Job Summary
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Short Interval Report
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Hot Spot Locations
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18-foot Grinder
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Grinding Simulation
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Optimal Grinding Strategy
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Validation Report
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What is ProVAL?

• ProVAL is an engineering software application
  that allows users to view and analyze pavement
  profiles in many different ways.
• ProVAL is a FHWA product with continuous
  improvements.

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History of ProVAL Releases
2.7
3.0
1.0
2.5
2002
2003
2006
2007
2005
2004
2008
2009
2001
2.0
2.6
2.73
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Smoothness Assurance Module (SAM)

• Uses Profilers rather than Profilographs
• Allows a choice of an index
• Makes continuous reporting possible
• Includes both short and long interval criteria
• Produces a grinding simulation

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25-foot Grinder
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Grinder Setup
Head Position Lf / Wheel Base
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Grinder Setup
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Grinding Simulation Setup
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Acknowledgement

• US FHWA Sponsorship
• Co-authors
• Steven M. Karamihas, University of Michigan, USA
• Robert Otto Rasmussen, P.E., Ph.D., The Transtec
  Group, Inc., USA
• Mark Swanlund, P.E., US DOT Federal Highway
  Administration, USA
• Robert Orthmeyer, P.E., US DOT Federal Highway
  Administration, USA
• US Profile Pooled Fund States

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ProVAL Website
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www.RoadProfile.com