Open-Graded Crack Relief Layer and Asphalt Rubber Membrane Interlayer to TRANSPORTATION

Florida Department of
TRANSPORTATION
Open-Graded Crack Relief Layer and
Asphalt Rubber Membrane Interlayer to
Mitigate Reflective Cracking
Experimental Project Interim Report
FDOT Office
District
County
Financial Project
Roadway ID
State Road No.
US Road No.
Report Date
State Materials Office
3
Gadsden
411695-1-52-01
50010000
10
90
1/26/2016
Project Description
District
County
Financial Project
Roadway ID
State Road No.
US Road No.
Lanes Tested
3
Gadsden
411695-1-52-01
50010000
10
90
R1, L1
Objective
The objective of this study is to evaluate the effectiveness of various reflection crack
mitigation strategies including an open-graded crack relief layer and an asphalt rubber
membrane interlayer.
Background
This experimental project is located on SR-10/US-90 in Gadsden County. The original
two-lane roadway was constructed in the late 1920s and consisted of a 7 inch concrete
pavement with unpaved shoulders. Several rehabilitations have taken place over the
years including asphalt overlays, an initial widening from two to three lanes, and a
subsequent widening from three to four lanes. Prior to rehabilitation, this roadway
exhibited significant reflection cracking in the two inside lanes where the original concrete
pavement still exists.
Description
The experimental project consists of five test sections ranging from 1315 to 1542 feet in
length. The test sections were incorporated in the scope of a 16.5 mile resurfacing
project (FIN 411695-1-52-01), which was completed in January 2010. The experimental
design called for milling 3 inches of the existing asphalt and placing back 1.5 inches of
Superpave 12.5-mm structural course in sections 1,2,4, and 5 and placing 2.5 inches of
the same SP-12.5 in section 3. In addition, section 1 received a 0.5 inch overbuild,
section 4 received a 1 inch open-graded crack relief layer, and section 5 received a 0.5
inch asphalt rubber membrane interlayer. Pavement performance is evaluated in terms
of pavement deflection, cracking, rutting, and smoothness.
Page 1
Project Description
District
County
Financial Project
Roadway ID
State Road No.
US Road No.
Lanes Tested
3
Gadsden
411695-1-52-01
50010000
10
90
R1, L1
Page 2
Project Layout
Page 3
Pavement Thickness
R1
Section 1
Section 2
Section 3
Section 4
Section 5
1.0” FC-9.5
1.5” SP-12.5
0.5” SP-9.5
L1
1.0” FC-9.5
1.5” SP-12.5
0.5” SP-9.5
2.2” AC
2.2” AC
7.0” PCC Base
7.0” PCC Base
1.0” FC-9.5
1.0” FC-9.5
1.5” SP-12.5
1.5” SP-12.5
6.9” AC
6.9” AC
7.3” Concrete
7.0” Concrete
1.0” FC-9.5
1.0” FC-9.5
2.5” SP-12.5
2.5” SP-12.5
4.9” AC
3.1” AC
6.8” Concrete
6.0” Concrete
1.0” FC-9.5
1.0” FC-9.5
1.5” SP-12.5
1.0” OGCR
1.5” SP-12.5
1.0” OGCR
2.9” AC
3.8” AC
6.0” Concrete
6.5” Concrete
1.0” FC-9.5
1.0” FC-9.5
1.5” SP-12.5
0.5” ARMI
1.5” SP-12.5
0.5” ARMI
3.7” AC
2.1” AC
7.0” Concrete
8.0” Concrete
Page 4
Traffic
Cummulative ESALs in Design Lane (x 103)
Traffic Count Site #501704
350
300
250
200
150
100
50
0
2010
2011
2012
Note: 2015 traffic data not available
Page 5
2013
2014
2015
Transverse Cracks
Lane R1
Section 1
25
Section 2
No of Cracks/ AC Thickness 1
Section 3
20
Section 4
Section 5
15
10
5
0
0.2
1.2
2.2
3.4
Years Post Rehabilitation
4.2
6.0
Lane L1
Section 1
25
Section 2
No. of Cracks/ AC Thickness
1
Section 3
20
Section 4
Section 5
15
10
5
0
0.2
1
1.2
2.2
3.4
Years Post Rehabilitation
Total AC thickness (inches) above the PCC
Page 6
4.2
6.0
Rut Depth
Lane R1
0.25
Section 1
Section 2
Section 3
0.20
Section 4
Section 5
Rut Depth (inch)
0.15
0.10
0.05
0.00
0.1
1.2
2.2
3.2
Years Post Rehabilitation
4.3
5.4
Lane L1
0.25
Section 1
Section 2
Section 3
0.20
Rut Depth (inch)
Section 4
Section 5
0.15
0.10
0.05
0.00
0.1
1.2
2.2
3.2
Years Post Rehabilitation
Page 7
4.3
5.4
Smoothness
Mean Roughness Inex (inch/mile)
Lane R1
100
Section 1
90
Section 2
80
Section 3
70
Section 4
60
Section 5
50
40
30
20
10
0
0.1
1.2
2.2
3.2
Years Post Rehabilitation
4.3
5.4
Mean Roughness Inex (inch/mile)
Lane L1
100
Section 1
90
Section 2
80
Section 3
70
Section 4
60
Section 5
50
40
30
20
10
0
0.1
1.2
2.2
3.2
Years Post Rehabilitation
Page 8
4.3
5.4
Deflection
Pavement Deflection D0 (mils)
Lane R1
20
Section 1
18
Section 2
16
Section 3
14
Section 4
12
Section 5
10
8
6
4
2
0
0.1
1.2
2.2
3.2
Years Post Rehabilitation
4.1
5.4
Pavement Deflection D0 (mils)
Lane L1
20
Section 1
18
Section 2
16
Section 3
14
Section 4
12
Section 5
10
8
6
4
2
0
0.1
1.2
2.2
3.2
Years Post Rehabilitation
Page 9
4.3
5.4