LTPP Program LongTerm Pavement Performance Program Presented to

LTPP Program Long-Term Pavement Performance Program Presented to the ACPA Professors Workshop Skokie, IL June 19, 2008

LTPP Program Scope of Presentation • • • Fact about the LTPP Program LTPP/ASCE Data Analysis Contest Key Features of Data. Pave Online Sample Data Extraction Other LTPP Products

LTPP Program FACTS about the Long-Term Pavement Performance Program(LTPP • 20 year program • Collects pavement performance data • Aprox. 1, 914 research test sections throughout the US and Canada • Joint FHWA, State DOT, Provincial DOT cooperative program

LTPP Program LTPP Development 1984 Ø Strategic Transportation Research Study 1985 -1987 Ø LTPP Planning 1987 -1992 Ø Strategic Highway Research Program Million) (LTPP: $50

LTPP Program Original Objectives • Evaluate existing design methods. • Develop improved design methodologies and strategies for the rehabilitation of existing pavements. • Help support the develop of improved design equations for new and reconstructed pavements.

LTPP Program Objectives Continued… • Determine the effects of loading, environment, material properties and variability, construction quality, and maintenance levels on pavement distress and performance. • Determine the effects of specific design features on pavement performance. • Establish a national long-term database to support SHRP’s objectives and to meet the future needs of the highway industry.

LTPP Program General Pavement Studies (GPS) GPS-1 Asphalt Concrete (AC) on Granular Base GPS-2 AC on Bound Base GPS-3 Jointed Plain Concrete Pavement GPS-4 Jointed Reinforced Concrete Pavement GPS-5 Continuously Reinforced Concrete Pavement GPS-6 A Existing AC Overlay on AC Pavements GPS-6 B New AC Overlay on AC Pavements GPS-7 A Existing AC Overlay on Portland Cement Concrete (PCC) Pavements GPS-7 B New AC Overlay on PCC Pavements GPS-9 Unbounded PCC Overlays on PCC Pavements

LTPP Program GPS continued…. • Focus on most commonly used pavement designs • One 500 foot section per location Primary Factors Secondary Factors Subgrade: fine & course Traffic: medium & heavy Temp: freeze and non-freeze Moistures: wet and dry AC thickness AC stiffness SN of base and subgrade PCC thickness Joint spacing

LTPP Program General Pavement Studies (GPS) Approximately 652 sections

LTPP Program Specific Pavement Studies (SPS) SPS-1 Strategic Study of Structural Factors for Flexible Pavements SPS-2 Strategic Study of Structural Factors for Rigid Pavements SPS-3 Preventative Maintenance Effective for Flexible Pavements SPS-4 Preventative Maintenance Effective for Rigid Pavements SPS-5 Rehabilitation of AC Pavements SPS-6 Rehabilitation of Jointed PCC Pavements SPS-7 Bonded PCC Overlays on Concrete Pavements SPS-8 Study of Environmental Effects in the Absence of Heavy Loads SPS-9 Validation of SHRP Asphalt Specification and Mix Design (Superpave)

LTPP Program SPS continued…. • Focus on certain pavement engineering factors • Multiple 500 feet sections per location Primary Factors Subgrade: fine & course Traffic: medium & heavy Temp: freeze and non-freeze Moistures: wet and dry Secondary Factors AC drainage - yes, no AC thickness AC base type and thickness PCCP drainage- yes, no PCC strength and thickness Lane width Base type

LTPP Program Specific Pavement Studies (SPS) Approximately 1, 262 sections

LTPP Program Dry Freeze Dry No- Freeze Wet No- Freeze

LTPP Program

LTPP Program Pavement Distress

LTPP Program Profile Data Smoothness

LTPP Program FWD Structural Capacity

LTPP Program Traffic Loads Weigh-In-Motion (WIM)

LTPP Program Climatic Data Environmental Effects

LTPP Program Climate Traffic Pavement Structure Material Properties LTPP Data Collection Pavement condition

LTPP Program Scope of Presentation • • • Fact about the LTPP Program LTPP/ASCE Data Analysis Contest Key Features of Data. Pave Online Sample Data Extraction Other LTPP Products

LTPP Program Why a contest ? • To work with the next generation of pavement engineers. • To work closely with universities, where future research is being conducted.

LTPP Program • In 1998, LTPP/ASCE developed and conducted the first “International LTPP Data Analysis Contest” • Main catalyst “Data. Pave” • Since 1998 the contest has been conducted three additional times

LTPP Program Projects are evaluated based on …. • Usefulness of product and potential benefit to end users, • Originality of concept, demonstrated use of the LTPP database, • Organization of paper, and presentation (including clarity and style).

LTPP Program Segmented into four categories …. • Category 1, Undergraduate Students (Individual or team entry) • Category 2, Graduate Students (Individual or team entry) • Category 3, Partnership • Category 4, Curriculum

LTPP Program Adoption of LTPP in the Classroom! – Incorporate LTPP data elements provide real-world applications – Professors are seeking more meaningful assignments for students and need data to support assignments – LTPP can provide much needed data

LTPP Program Professor Case Study From Contest • Dr. Susan Tighe, University of Waterlou • USING LTPP FOR EDUCATING TOMORROW'S ENGINEER, 2003 First Place, CURRICULUM CATEGORY • Drs. Neeraj Buch and Karim Chatti – The Use of the LTPP Database in the Pavement Engineering Curriculum at Michigan State University, 2002 First Place, Curriculum CATEGORY • Dr. Shelley Stoffels, Penn State University

LTPP Program Scope of Presentation • • • Fact about the LTPP Program LTPP/ASCE Data Analysis Contest Key Features of Data. Pave Online Sample Data Extraction Other LTPP Products

LTPP Program Key Features of Data. Pave online • What's new (Database release announcement) • Table/Field Navigator • Table Export

LTPP Program Key Features of Data. Pave online • What's new (Database release announcement) • Table/Field Navigator • Table Export

LTPP Program LTPP Database… MODULES TABLES ELEMENTS • • • • • Climatic General Inventory Maintenance Monitoring Rehabilitation SMP SPS (10) Traffic Deflection Profile Friction Distress etc Date Time Temperature Individual data elements

LTPP Program Key Features of Data. Pave online • What's new (Database release announcement) • Table/Field Navigator • Table Export

LTPP Program Scope of Presentation • • • Background of the LTPP Program LTPP/ASCE Data Analysis Contest Key Features of Data. Pave Online Sample Data Extraction Other LTPP Products

LTPP Program Sample Data Extraction • Performance data – Inventory data (layer) – Traffic data – Materials testing – Profile

54 -4003 54 -4004 Layer data

LTPP Program Extracted data

54 -4003 54 -4004 Traffic Data

LTPP Program Extracted data

1 -0101 1 -0102 1 -0103 Testing Data

LTPP Program Extracted data

1 -0101 1 -0102 1 -0103 Profile Data

LTPP Program Extracted data

LTPP Program Scope of Presentation • • • Background of the LTPP Program LTPP/ASCE Data Analysis Contest Key Features of Data. Pave Online Sample Data Extraction Other LTPP Products

LTPP Program • LTPP Pavements Online – (1998 AASHTO supplement) • LTPP WIM Cost • Di. Va Online • Other Products online – LTPPBind 2. 1 & 3. 1 beta – LTPP faultmeter plans and spec’s – Other

LTPP Program Additional information on the contest …. www. fhwa. dot. gov/pavement/ltpp/datapave. cfm Federal Highway Administration Antonio Nieves Torres Tel. 202 -493 -3074 antonio. nieves@fhwa. dot. gov Dr. Karim Chatti Michigan State University Tel. (517) 355 -6534 chatti@egr. msu. edu

LTPP Program Additional information on LTPP products…. Antonio Nieves Tel. 202 -493 -3074 antonio. nieves@fhwa. dot. gov North Central/Western Regions Mike Moravec Tel. 410 -962 -5623 mike. moravec@fhwa. dot. gov North Atlantic/ Southern Regions

LTPP Program Thank you ! www. fhwa. dot. gov/pavement/ltpp/index. cfm www. datapave. com