Pavement Preservation Journal - Fall 2017 - 27

HOW FP 2 WORKS FOR YOU

Early NCAT Results Favor Preservation
BY DR. BUZZ POWELL, P.E.

F

ull-scale accelerated pavement
testing (APT) has been conducted
for predominantly southern
states at the National Center for
Asphalt Technology (NCAT) Pavement Test
Track since 2000, while the Minnesota
DOT's Road Research Facility (MnROAD)

has been conducting similar research for
northern states since 1994.
These proven and practical APT
facilities are for the first time officially
engaged in a research partnership that
is cooperatively funded by numerous
state DOTs from all over the country

Two-year-old test sections on U.S. 280 in Alabama
GOOD

FAIR

POOR

Time, yrs
0

1

2

3

4

Avg. % Cracking

0

10

20

30

Life-extending benefit using MAP-21 criteria to band pretreatment condition; banding refers to
grouping pretreatment cracking into good, fair, and poor ranges as defined by MAP-21. All the
subsections with less than five percent of the area cracked prior to treatment are averaged to
produce a single life extending benefit curve; the same is done for fair and poor ranges

5

for the purpose of executing flexible
pavement studies targeting national
research priorities.
The objective of the preservation group
(PG15) experiment, in which FP2 Inc. and
its allies are an equal funding partner with
DOTs from 15 different states, is to quantify the benefits of pavement preservation on both low volume and high volume
roadways with results that are practical
and implementable in both northern and
southern U.S. climates. Funding is provided through the national Transportation
Pooled Fund, which supports the NCAT
Pavement Test Track (www.pooledfund.
org/Details/Study/496).
LOW, HIGH TRAFFIC TESTS
To objectively quantify the life-extending and condition-improving benefits
of pavement preservation, test sections
were built on local roadways near
both facilities.
In the southern half of the experiment,
low traffic test sections were built on Lee
(County) Road 159 (near the main NCAT
location in Auburn, Ala.) in summer 2012,
and high traffic sections were built on U.S.
280 (near the NCAT Pavement Test Track
in Opelika) in summer 2015.
In the northern half of the experiment, low traffic sections were built on
County Road 8 and high traffic sections
were built on U.S. 169 near Pease, Minn.
(both about 45 minutes north of the main
MnROAD facility) in summer 2016.
Field performance is monitored with
similar automated technologies at both
locations, and data is stored in a common
database. As of Oct. 1, 2017, the number of ESALs supported since treatment
placements will have totaled approximately 70,000, 790,000, and 1.3 million
for Lee Road 159 northbound, Lee Road
159 southbound, and U.S. 280, respectively. Traffic volumes on the northern
Fall 2017 | PAVEMENT PRESERVATION JOURNAL

27


http://www.pooledfund.org/details/study/496 http://www.pooledfund.org/details/study/496

Table of Contents for the Digital Edition of Pavement Preservation Journal - Fall 2017

President's Message
FP2 Marks Silver Anniversary
ARRA, FP2 Preservation Proponents Assault Capitol Hill
Neglected Rural Roads Drag on Economy
Early NCAT Results Favor Preservation
Perservation Partnerships: Southeast PPP Ponders Early Treatment Failures; Midwest PPP Meets in Michigan
Texas Contractor Upgrades Performance
Asphalt Emulsion Bond Coats Optimize UTBO, Thinlay Performance
Student Studies Sustainable Chip Seals
Pavement Preservation Journal - Fall 2017 - Intro
Pavement Preservation Journal - Fall 2017 - cover1
Pavement Preservation Journal - Fall 2017 - cover2
Pavement Preservation Journal - Fall 2017 - 3
Pavement Preservation Journal - Fall 2017 - 4
Pavement Preservation Journal - Fall 2017 - 5
Pavement Preservation Journal - Fall 2017 - 6
Pavement Preservation Journal - Fall 2017 - 7
Pavement Preservation Journal - Fall 2017 - 8
Pavement Preservation Journal - Fall 2017 - President's Message
Pavement Preservation Journal - Fall 2017 - FP2 Marks Silver Anniversary
Pavement Preservation Journal - Fall 2017 - 11
Pavement Preservation Journal - Fall 2017 - 12
Pavement Preservation Journal - Fall 2017 - 13
Pavement Preservation Journal - Fall 2017 - 14
Pavement Preservation Journal - Fall 2017 - 15
Pavement Preservation Journal - Fall 2017 - 16
Pavement Preservation Journal - Fall 2017 - ARRA, FP2 Preservation Proponents Assault Capitol Hill
Pavement Preservation Journal - Fall 2017 - 18
Pavement Preservation Journal - Fall 2017 - 19
Pavement Preservation Journal - Fall 2017 - 20
Pavement Preservation Journal - Fall 2017 - 21
Pavement Preservation Journal - Fall 2017 - 22
Pavement Preservation Journal - Fall 2017 - Neglected Rural Roads Drag on Economy
Pavement Preservation Journal - Fall 2017 - 24
Pavement Preservation Journal - Fall 2017 - 25
Pavement Preservation Journal - Fall 2017 - 26
Pavement Preservation Journal - Fall 2017 - Early NCAT Results Favor Preservation
Pavement Preservation Journal - Fall 2017 - 28
Pavement Preservation Journal - Fall 2017 - Perservation Partnerships: Southeast PPP Ponders Early Treatment Failures; Midwest PPP Meets in Michigan
Pavement Preservation Journal - Fall 2017 - 30
Pavement Preservation Journal - Fall 2017 - 31
Pavement Preservation Journal - Fall 2017 - 32
Pavement Preservation Journal - Fall 2017 - Texas Contractor Upgrades Performance
Pavement Preservation Journal - Fall 2017 - Asphalt Emulsion Bond Coats Optimize UTBO, Thinlay Performance
Pavement Preservation Journal - Fall 2017 - 35
Pavement Preservation Journal - Fall 2017 - 36
Pavement Preservation Journal - Fall 2017 - 37
Pavement Preservation Journal - Fall 2017 - 38
Pavement Preservation Journal - Fall 2017 - 39
Pavement Preservation Journal - Fall 2017 - 40
Pavement Preservation Journal - Fall 2017 - 41
Pavement Preservation Journal - Fall 2017 - 42
Pavement Preservation Journal - Fall 2017 - Student Studies Sustainable Chip Seals
Pavement Preservation Journal - Fall 2017 - 44
Pavement Preservation Journal - Fall 2017 - 45
Pavement Preservation Journal - Fall 2017 - 46
Pavement Preservation Journal - Fall 2017 - cover3
Pavement Preservation Journal - Fall 2017 - cover4
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