A climatic map is presented on the user interface to visualize merra climatic data for. Ltpp program ltpp program transportation research board. Asphalt pavement association of michigan selecting the right mix for your project 2937 atrium drive, suite 202 okemos, mi 48864 5173237800. Update and improve ltppbind binder etg meeting wednesday, september 16, 2015. In addition, investigations into chloride binding and competition between other. Software is available at no charge from ltpp customer support service center phone. As part of the long term pavement performance ltpp program, the arizona department of transportation adot constructed five specific pavement studies 9 sps. Products derived from the longterm pavement performance ltpp program. The center is located at fhwas turnerfairbank highway research center in mclean, virginia.
The climatic data is available from 1979 to present at an hourly temporal resolution and includes climatic. Ltpp lnfopave is the primary web site to access data and other resource information about the fhwa long term pavement performance ltpp program. C as the climatic value in a transfer function for hightemperature ht pg. Ltpp rigid pavement design is based on the rigid pavement design software originally developed by eres consultants. Asphalt pavement association of michigan selecting the right mix 2937 atrium drive, suite 202 okemos, mi 48864 5173237800.
Federal highway administration has released a product brief that provides an overview of the long term pavement performance bind online tool for selecting asphalt binder performance grades. Longterm pavement performance bind online user guide fhwa. The long term pavement performance climate and bind tools. Software testing alpha and beta testers are needed. Fhwa announces ltpp data analysis contest american. Understand how the ltpp climate tool functions and how to extract data from the tool. Update and improve longterm pavement program ltpp bind. This product brief introduces the reader to the longterm pavement performance bind ltppbind online webbased tool for selecting asphalt binder performance grades pgs. The long term pavement performance ltpp program has recently taken delivery of four new, stateoftheart inertial profiling units.
With the introduction of the federal highway administration s fhwa new ltppbind software, selecting the correct performance graded pg binder to use when implementing the superpave mix design system has just become much easier. Longterm pavement performance bind online user guide. Initially, these were methods, guidelines, and procedures for standardized testing and performance data collection. Initial results of pavement texture testing in the fhwa. The primary goal of the ltpp program is to answer how and why pavements perform as they do. Standard ltpp data traffic ltpp sps and fhwa tmg for classification 3 years of wim using piezo quartz sensors climate ltpp merra and vws approaches none additional data collection pretreatment testing data gpr aashto r3704 supplemented by other astm standards and fhwa tx9212331 mit scan2 fhwa report if06006 none monitoring data. Downloaded tools include ltpp dynamic modulus prediction and ltpp bind. Ltpp rigid pavement design projects consist of user inputs about concrete properties, base properties, reliability and standard deviation, climatic properties, subgrade kvalue, design equivalent singleaxle loads esals, pavement type, joint spacing, and edge support.
The longterm pavement performance ltpp program was established to collect pavement performance data as one of the major research areas of the strategic highway research program shrp. The webbased system offers a gateway to data from the ltpp test sections, as well as findings from data analyses and extensive documentation for the many aspects of ltpp experiments, including design, data. Ltpp long term pavement performance today and in the. Performance ltpp program is to understand how and why. Software, pavement distress, pavement material properties, pavement. Ltpps first decade ltpp was established as part of the strategic highway research program shrp, and it is now managed by the fhwa.
Report recommends calibration be conducted by everyone that has an fwd. Ltpp long term pavement performance today and in the future tuesday, august 2, 2011. Tools for ltpp mike moravec, deborah walker and eric weaver march 27, 2007 since its beginning in 1987 as a strategic highway research program shrp project, the federal highway administration s fhwa long term pavement performance ltpp program has worked to improve the condition of the nations highway transportation system. Whats newuhpc characterization study publisheda comprehensive study covering the properties and behavior of uhpcclass materials has been completed and the report published. The ltpp climate tool is an online tool hosted on ltpp infopave that provides users with access to processed versions of merra data using different visual features and interfaces. Understand how the ltpp bind program works and how to. The ltpp infopave mobile app provides a small subset of features available on the ltpp infopave web site and is intended as an introduction to ltpp. The report, fhwahrt18036, speaks to mechanical properties, durability properties, and specific structural properties of five different uhpc formulations.
It includes resources for the two classes of study of pavement general pavement studies gps and specific pavement studies sps. Longterm pavement performance program, known as ltpp, is a research project supported by federal highway administration fhwa to collect and analyze. Started in 1987he federal highway administration, t fhwa long term pavement performance ltpp program is a research program that investigates inservice pavement performance. The aims contains the larger electronic base of raw data files used to populate the ppdb and other information not contained in the ppdb. Verification, refinement, and applicability of longterm. These requests will be assessed on a casebycase basis. Asphalt pavement association of michigan selecting the. Index longterm pavement performance bind online, march.
Products derived from the long term pavement performance ltpp program have been made available to state departments of transportation and other segments of the highway community since the early years of the program. Update on proposed fhwa ltpp pavement preservation p2. Since 1991, the federal highway administration fhwa has. The product brief explains what the tool is, who can benefit from its use, what its main features are, and how and where potential users can find more information.
Ltpp bind distress identification manual pavement loading user guide ltpp infopave mobile 10. Leif wathne participated in the meeting, which covered a range of topics related to longterm pavement research. Ltppbind online provides the option to use ltpp climatic data virtual weather. Goals the primary objective of this project is to develop an improved long term pavement performance ltpp classification scheme that can be implemented nationwide, regardless of the type of weighinmotion system. The pg binder system classifies binders based on their suitability. Longterm pavement performance bind ltppbind online is a webbased tool used to select asphalt binder performance grades pgs. The competitively procured profilers were manufactured by ames engineering to meet ltpps stringent acceptance criteria. The ppdb is the formal database that contains the majority of research data on the performance of the ltpp test sections in an electronic relational database format. Describe the ltpp bind study and the lessons learned from the effort. Ltppbind online is a webbased tool to help highway agencies select the asphalt binder performance grade pg for a particular site based on the.
Effect of reob on the performance of asphalt mixtures containing ras. Long term pavement performance ltpp program ltpp customer support established in december 1997, the ltpp customer support service center provides a single point of contact for ltpp data and information. Members of the fhwa asphalt binder etg in attendance included. Ltppbind allows the use of national aeronautics and space administration nasa modernera retrospective analysis for research and applications merra climatic data, ltpp climatic data, and manual data. The federal highway administration fhwa has operational responsibility for. Long term pavement performance ltpp program standard data release.
Longterm pavement performance ltpp program experiments, including. Ltppbind simplifies superpave binder selection fhwa. The longterm pavement performance program ltpp is the largest. Longterm pavement performance information management. This new software tool provides pavement engineers with the ability to select. Describe the ltpp climate study and the lessons learned from the effort.
The federal highway administration fhwa turnerfairbank highway research. With the introduction of the federal highway administrations fhwa new ltppbind software, selecting the correct performance graded pg binder to use when implementing the superpave mix design system has just become much easier. Ltpp field operations guide for sps wim sites version 1. By using the latest in computer technology, this webcentric interface is designed to improve access to ltpp data. The goal of the workshop is to set priorities for conducting the remaining fhwa long term pavement performance ltpp data analysis projects. Longterm pavement performance bind online blurbs new. Index longterm pavement performance ltpp publications. The standard data release sdr is the annual release of the long term pavement performance ltpp program database. A second group focuses on longterm bridge performance ltbp. The contest is open to undergraduate and graduate students, as well as undergraduate andor graduate students working in partnership with a highway agency or private company. Fhwa long term pavement performance ltpp website tpm. Given the strong national interest in analyzing the pavement performance data collected at the specific pavement study sps sites, federal highway administration. Ltpp products ltpp calibration procedures adopted by aashto product delivered in report form.
Ltpp infopave launched in 2014, ltpp infopave enables users to tap easily into the wealth of pavement performance data and knowledge available from the ltpp program. Throughout the life of the ltpp program, significant efforts have been. This website provides information on the fhwas long term pavement performance ltpp program which collects data on pavement performance. In 1987, ltpp began a series of rigorous longterm field experiments monitoring more than 2,400 asphalt and portland cement concrete pavement test sections across the united states and canada. The federal highway administration fhwa has operational responsibility for the. Ltpp data and information can be downloaded from while requests may be filled for free, limitations exist based on the level of effort required to fulfill the request. The first 5 years of the ltpp program were completed under the funding and direction of shrp. Longterm pavement performance studies the longterm pavement performance program ltpp is the largest pavement performance research program ever undertaken, gathering data from 2,000 pavement test sections over a 20year test period. Understand how the ltpp bind program works and how to run an analysis. The new devices replace ltpp profilers that were procured in 2002 and collectively logged more than 1. The user checks the merra radio button and then selects the select location button to open a window for users to select the location by clicking on the map, entering the citylocation name, or entering coordinates in the search box see. Ltpp climate tool a new feature has been implemented on the ltpp infopave data hub which utilizes multiple data presentation options including climatic maps and graphs. Office of research, development, and technology office of infrastructure research and development. Fhwa longterm infrastructure program ltip officials and industry stakeholders met by conference call last week to begin planning for a future workshop, says larry scofield.
63 263 1070 653 740 1042 584 533 1417 1157 386 78 113 48 554 464 535 64 154 1281 828 512 445 1522 893 504 784 149 782 1574 985 873 1411 620 493 297 466 74 21 349 970 303 1172 255 1128 323