Barstow takes the lead in rebuilding roads through Full-Depth Reclamation with Emulsion;
a structurally proven and economically viable alternative in pavement reconstruction.
Febuary 2010
General Project Information:
Location: Barstow Road, City of Barstow, California
Road Owner / Contact: City of Barstow, Domingo Gonzales, William Henderson
Date Placed: July 27-July 31, 2009
Description of road, distresses, reason for project.
Cross-Sections
Before:
- 4"-10" thick cracked and oxidized AC
- AB on top of native
After:
- 1.5" inches of HMA
- 6 inches of FDR Stabilized Base
- AB on top of native
Construction Information
Contractor:
- Hardy & Harper, Pavement Recycling Systems
Equipment Used:
- 2 CAT RM-500 Reclaimer
- Ingersoll Rand Compactors, CAT Motor Grader
Construction Notes:
- The reclaimer made four passes from curb to curb
- The reclaimed material was treated with 4.5% engineered emulsion
Traffic Return:
- Traffic return after compaction of FDR. Overlay was placed five days later.
Surfacing:
- 1.5 inches of hot mix asphalt (HMA)
Photos
Before
Construction
The Engineered Emulsion Stabilized Road After Surfacing
Design, Testing & Performance Information
The City of Barstow was looking for a cost-effective solution to reconstruct Barstow
Road, the main thoroughfare between I-15 and downtown Barstow. This is a major thoroughfare
in the city of Barstow, so speed of construction was crucial to the city's selection
of the FDR process. This section of Barstow Road was pulverized to a depth of 10";
material was removed to make space for the final overlay. then injected with 4.5%
engineered emulsion, compacted and overlayed with conventional HMA. The overlay
was placed five days after compaction of the FDR process. The City of Barstow realized
approximately 40% savings over conventional remove and replace reconstruction.
For more information on this Emulsion FDR project or other Engineered Soluctions
in California, call Gary Hildebrand at (915)798-0455 or Lisa Wolf at (949)421-7523
General Project Information
Location: City of Barstow.
Barstow Road between E Grace Street and E Virgina Way.
Road Owner/Contact:
City of Barstow.
William Henderson.
760-255-5157
Date Placed: 07/31/09
Cross-Sections:
Before:
- Variable 4 to 10 inches of aged & cracked AC.
- 6 inces of Aggregate Base.
- Clayley Sands.
After:
- 1.5 inches of HMA
- 6 inches of Fortress Stabilized Base.
- Variable 0 - 4 inches existing HMA.
- Clayley Sands.
Construction Information:
Contractor:
- Hardy and Harper.
- PRS was a sub for pulverization and emulsification.
Equipment Used:
- Pulverizer RM 500
- Ingersoll Rand Compactors
Construction Notes:
Total of 28,800 SF of asphalt concrete pulverized.
Pulverized material was stabilized with 4.5% of engineered emulsion.
Early opening to traffic after emulsification.
1.5 inches of HMA as surfacing.
Photos
Before
Fortress Application and Compaction
After Compaction and Traffic Release
Finished Product with 1.5" AC on Top
Design Testing and Performance Information
This primary road in the city of Barstow had major distresses related with aging
and structure deficiency. Design was performed by the city engineer, considering
that to hold a TI of 9 for the next 10 years 1.5" of AC and a high performance base
of 6" was required. The city opted for the FORTRESS application and Road Science
assisted during the whole process. Consistancy in the structure was achieved and
a new contractor acquired experience with the system. Moisture problems were overcome
and a fast curing of the material was experimented reaching high performance in
less time than expected. The city reported 40% of savings using this process compared
with conventional reconstruction.
« Back to News