Pavement Preservation Journal - Fall 2016 - 21

* Specific Pavement Study-11 (SPS-11): Asphalt Concrete (AC) Pavement Preservation Study, and * Specific Pavement Study-12 (SPS-12): Portland Cement Concrete (PCC) Pavement Preservation Study. The objective of the SPS-11 and -12 experiments is to establish the impact of timing of preservation treatments on pavement distress propagation rates, which will enable determination of their impact on pavement life extension and performance. In turn, this information and understanding will enable determination of the right timing and cost-effectiveness of preservation treatments. exPerimentAL APProAch The underlying experimental concept is to apply the same preservation treatment, at different times, on the same pavement structure to determine the effectiveness of a single application of a treatment as a function of pavement condition and time. This concept is designed to try and capture the most appropriate time to perform a treatment and discover factors related to treatment timing. The vision of the experimental design is to include pavement sections that have recently been constructed, reconstructed, or received a structural overlay. Starting with relatively new pavement structures at each project site, test sections are established along a uniform road segment before other preservation treatments are applied. Over time, the same treatment is applied to different test sections. The length of the treatment application time span is intended to start before preservation treatments would normally be placed and the pavement is in new condition, and extend past the time current practice indicates that the treatments are no longer effective, i.e. significant distresses have manifested on the pavement surface. The SPS-11 and -12 experimental designs consist of multiple experiments, each addressing a specific preservation treatment. Those treatments, hence experiments: * SPS-11 AC pavement preservation experiments: SPS-11T, thin AC overlay of AC overlay (over AC pavement); SPS-11C, chip seal of existing AC overlay (over AC pavement); and SPS-11M, micro surfacing of AC overlay (over AC pavement). * SPS-12 PCC pavement preservation experiments: SPS-12G, diamond grinding of original dowelled plain jointed PCC; SPS-12S, joint sealing of original dowelled plain jointed PCC; and SPS-12P, joint penetrating sealers for original dowelled plain jointed PCC. In the case of the SPS-11 experiments, placement of the AC overlay must have been completed within the past four years; preference will be given to pavements with a single AC overlay. Similarly, for the SPS-12 experiments, construction of the dowelled jointed plain PCC pavement must have been completed within the past 10 years for the diamond grinding treatment and within the past four years for the joint sealing and joint penetrating sealer treatments. Within each of the SPS-11 experiment projects, there will be six core test sections, one control section (no treatment) Micro surfacing is subject of SPS-11M experiment of LTPP work SPS-12G will examine diamond grinding of original dowelled plain jointed PCC and five treatment test sections (same treatment, but applied at different times). Within each of the SPS-12 experiments, there will be up to seven core test sections broken into control and treatments test sections: * Diamond grinding: one control test section and six treatment test sections * Joint sealing: three control test sections and four treatment test sections * Joint penetrating sealers: three control test sections and four treatment test sections. An ideal LTPP test section is illustrated in Fig.1. Each test section is 1,250 ft. long, with a 500-ft. lead-in, 500-ft. monitoring section, and 250-ft. leave zones. Directly next to each end of the monitoring section are two 50-ft. buffer zones where destructive material tests, such as cores and test pits, and traffic monitoring scales are prohibited. Next to the buffer zones are material sampling areas where destructive samples are allowed. The experimental treatments applied to each test section must cover the entire designated test section length. Fall 2016 pavement preservation journal 21

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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