5/9/02 Experimental Project Report County Bradford and St. Johns Section/Subsection No. 28030-3508 and 78080-3423 State Road 16 and 9(I-95) Project Description Ground Tire Rubber In Open Graded Friction Course State Materials Office Gainesville, Florida
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5/9/02
Experimental Project Report
County Bradford and St. Johns Section/Subsection No. 28030-3508 and 78080-3423
State Road 16 and 9(I-95) Project Description Ground Tire Rubber In Open Graded Friction
Course
State Materials Office Gainesville, Florida
Page 1 of 4
Project Description
County Bradford and St. Johns Section Number 28030-3508 and 78080-3423
State Road 16 and 9(I-95)
OBJECTIVE:
The objective of this study is to evaluate the relative long-term field performance of pavement containing a open graded friction course (FC2) mixture with different levels of Ground Tire Rubber (GTR), from 5 to 17 percent, and a section containing 10 percent Dry Mix. The Bradford County project (Fig. 1) was constructed in April of 1989 on State Road 16, and consists of a control and five other sections that includes four GTR sections containing 5 to 17 percent GTR along with a section containing 10 percent Dry Mix, all located in the westbound lane. The St. Johns County project (Fig. 2) was constructed on state road 9(I-95) in September of 1990, and consists of two control sections (one in each direction, the northbound and the southbound traffic lane) and two test sections (each containing 10 percent of 80 mesh size GTR) in the northbound and southbound traffic lanes. Performance is evaluated in terms of Ride, Rutting and Cracking. LOCATION AND DIAGRAM OF SECTION
Fig. 1
Page 2 of 4
LOCATION AND DIAGRAM OF SECTION (CONT.)
PROJECT NO. 78080-3423 SR 9(I-95) ST.JOHNS COUNTY
(10% of 80 mesh size GTR in the North & Southbound Test Sections)
Fig. 2
Pavement Distress
Project Number 28030-3508 SR 16 Bradford County
Rutting
0.00
0.10
0.20
0.30
8/91 10/92 9/93 9/94 9/95 10/96 9/97 10/98 9/99 11/00 8/01 8/02
Test Date
Rut
(in)
5% GTR 10% GTR 15% GTR 17% GTR CONTROL 10% DRY MIX
Cracking
050
100150200250300350400450500550
8/91 10/92 9/93 9/94 9/95 10/96 9/97 10/98 9/99 11/00 8/01 8/02Test Date
Cra
ckin
g (s
f/100
0 sf
)
5% GTR 10% GTR 15% GTR 17% GTR CONTROL 10% DRY MIX
Ride
0.00
1.00
2.00
3.00
4.00
5.00
8/91 10/92 9/93 9/94 9/95 10/96 9/97 7/99 9/99 8/01 8/02Test Date
Rid
e (P
SI)
5% GTR 10% GTR 15% GTR 17% GTR CONTROL 10% DRY MIX
3 of 4
Pavement Distress
Rutting
0.00
0.05
0.10
0.15
0.20
0.25
0.30
09/16/91 10/19/92 09/21/93 09/29/94 09/20/95 10/23/96 10/01/97 12/01/98 10/04/99 06/11/01
Test Dates
rutti
ng (i
n.)
NB - Section 1 NB - Control SB - Section 1 SB - Control
Cracking
000.0
002.0
004.0
006.0
008.0
010.0
012.0
09/16/91 10/19/92 09/21/93 09/29/94 09/20/95 10/23/96 10/01/97 12/01/98 10/04/99 06/11/01
Test Dates
crac
king
(ft.2 )
NB - Section 1 NB - Control SB - Section 1 SB - Control
Ride
0.00
1.00
2.00
3.00
4.00
5.00
09/16/91 10/19/92 09/21/93 09/29/94 09/20/95 10/23/96 10/01/97 12/01/98 10/04/99 06/11/01
Test Dates
ride
(psi
)
NB - Section 1 NB - Control SB - Section 1 SB - Control
4 of 4
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