Pavement Preservation Journal - Fall 2016 - 20

LTPP Tackles Pavement Preservation By Gonzalo R. Rada, Ph.D., P.E. and Gary Hicks, P.E., Ph.D. T he Long-Term Pavement Performance (LTPP) study, under management by the Federal Highway Administration (FHWA) since 1992, is the most comprehensive research program ever undertaken to determine how and why in-service pavements perform as they do. The mission defined for the LTPP program is to "increase pavement life by investigation of various designs of pavement structures and rehabilitated pavement structures, using different materials and under different loads, environments, subgrade soil, and maintenance practices" (Strategic Highway Research Program, 1986). The effective design and management of pavements constructed using new emerging materials or technologies require prediction of the long-term performance of the resulting structure under actual traffic loads and varied climate conditions. In turn, the critical requirement in the development of performance prediction models is availability of quality long-term performance data. The data must be collected following a uniform methodology, span the length of time between construction cycles, include measurements of significant parameters, and have measures of data quality. This realization led to the development of the LTPP program to support development of needed pavement engineering tools based on knowledge obtained from long-term performance observations, engineering structural measurements, climate measurements, and traffic loadings on in-service pavements. Pavement technology has changed and will continue to change. Many of the topics that led to the LTPP program are still relevant today and will continue to be relevant into the future, new pavement materials, technologies and strategies have evolved and they too must be addressed within the context of long-term performance monitoring. Pavement preservation is a technology that has been around for many decades and it has been proven, mostly anecdotally, to be an effective approach to extend pavement's effective service life, improve safety and service condition, and is cost-efficient. Given the current economic environment, most highway agencies are embracing pavement preservation, which utilizes more cost-effective techniques to better serve the public. Because pavement performance is at the heart of the pavement preservation decision-making process, provision of long-term performance data on in-service pavement test sections where controlled application of pavement preservation treatments are monitored is the motivation for the LTPP experiments titled: 20 Overview of LTPP experiment as planned in 2016 Fig. 1: Typical SPS-11 and -12 test section Fig. 2: Typical SPS-11 project layout: all treatments Fig. 3: Typical SPS-12 project layout: diamond grinding treatment View past issues of the Pavement Preservation Journal online at www.naylornetwork.com/fpp-nxt http://www.naylornetwork.com/fpp-nxt

Table of Contents for the Digital Edition of Pavement Preservation Journal - Fall 2016

President’s Message
Still Time to Visit NPPC 2016
NCAT: Quantifying Southern Treatments, Placing Northern Treatments
LTPP Tackles Pavement Preservation
D.C. Update: Capitol Hill Etiquette for Visits
FP2 @ Eurasphalt & Eurobitume 2016
Los Angeles County Abandons 'Worst First' Pavement Program
High-Volume U.S. 3 Gets R26 Showcase Preservation
New Mechanistic Tool Assesses Joint Sealant Effectiveness
Index of Advertisers
Pavement Preservation Journal - Fall 2016 - Cover1
Pavement Preservation Journal - Fall 2016 - IBD_L
Pavement Preservation Journal - Fall 2016 - IBD
Pavement Preservation Journal - Fall 2016 - cover2
Pavement Preservation Journal - Fall 2016 - 3
Pavement Preservation Journal - Fall 2016 - 4
Pavement Preservation Journal - Fall 2016 - 5
Pavement Preservation Journal - Fall 2016 - 6
Pavement Preservation Journal - Fall 2016 - 7
Pavement Preservation Journal - Fall 2016 - 8
Pavement Preservation Journal - Fall 2016 - President’s Message
Pavement Preservation Journal - Fall 2016 - 10
Pavement Preservation Journal - Fall 2016 - Still Time to Visit NPPC 2016
Pavement Preservation Journal - Fall 2016 - 12
Pavement Preservation Journal - Fall 2016 - 13
Pavement Preservation Journal - Fall 2016 - 14
Pavement Preservation Journal - Fall 2016 - 15
Pavement Preservation Journal - Fall 2016 - 16
Pavement Preservation Journal - Fall 2016 - NCAT: Quantifying Southern Treatments, Placing Northern Treatments
Pavement Preservation Journal - Fall 2016 - 18
Pavement Preservation Journal - Fall 2016 - 19
Pavement Preservation Journal - Fall 2016 - LTPP Tackles Pavement Preservation
Pavement Preservation Journal - Fall 2016 - 21
Pavement Preservation Journal - Fall 2016 - 22
Pavement Preservation Journal - Fall 2016 - 23
Pavement Preservation Journal - Fall 2016 - 24
Pavement Preservation Journal - Fall 2016 - D.C. Update: Capitol Hill Etiquette for Visits
Pavement Preservation Journal - Fall 2016 - 26
Pavement Preservation Journal - Fall 2016 - FP2 @ Eurasphalt & Eurobitume 2016
Pavement Preservation Journal - Fall 2016 - 28
Pavement Preservation Journal - Fall 2016 - Los Angeles County Abandons 'Worst First' Pavement Program
Pavement Preservation Journal - Fall 2016 - 30
Pavement Preservation Journal - Fall 2016 - 31
Pavement Preservation Journal - Fall 2016 - 32
Pavement Preservation Journal - Fall 2016 - 33
Pavement Preservation Journal - Fall 2016 - High-Volume U.S. 3 Gets R26 Showcase Preservation
Pavement Preservation Journal - Fall 2016 - 35
Pavement Preservation Journal - Fall 2016 - 36
Pavement Preservation Journal - Fall 2016 - 37
Pavement Preservation Journal - Fall 2016 - 38
Pavement Preservation Journal - Fall 2016 - New Mechanistic Tool Assesses Joint Sealant Effectiveness
Pavement Preservation Journal - Fall 2016 - 40
Pavement Preservation Journal - Fall 2016 - 41
Pavement Preservation Journal - Fall 2016 - Index of Advertisers
Pavement Preservation Journal - Fall 2016 - cover3
Pavement Preservation Journal - Fall 2016 - cover4
Pavement Preservation Journal - Fall 2016 - outsert1
Pavement Preservation Journal - Fall 2016 - outsert2
Pavement Preservation Journal - Fall 2016 - outsert3
Pavement Preservation Journal - Fall 2016 - outsert4
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