pascal mascarenhas
DESCRIPTION
Presentation by Pascal Mascarenhas of Vulcan Materials on Reclaimed Asphalt Pavement delivered at the CalAPA Fall Conference held Oct. 24, 2013 in Sacramento, Calif.TRANSCRIPT
![Page 1: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/1.jpg)
1
HIGH RAP % IN HMACALAPA FALL CONFERENCE
SACRAMENTO
OCTOBER 24, 2013
![Page 2: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/2.jpg)
2
![Page 3: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/3.jpg)
3
CITY OF LOS ANGELES
6500 Miles of improved roads 5800 Miles – Asphalt Concrete Annual Resurfacing budget of
$45 million.
![Page 4: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/4.jpg)
4
![Page 5: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/5.jpg)
5
CURRENT % RAP ALLOWED
Caltrans – HMA – up to 15%– Superpave – 25% +/-1
Green Book – Section 203-6 – up to 20% Allows >20% with additional testing and data
City of LA Contract – 50% RAP
![Page 6: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/6.jpg)
6
WHY RECYCLE?
Landfill shortage. August 11,1987 City order
prohibiting the landfilling of road materials.
Beneficial Use Excellent performance
![Page 7: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/7.jpg)
7
![Page 8: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/8.jpg)
8
CYCLEAN
The process used microwave technology to produce HMA at up to 135 tons/Hr
Plant would consume over 200,000 tons of City RAP in 1992 saving the city $1.5 M in raw material and disposal cost.
![Page 9: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/9.jpg)
9
CITY OF LOS ANGELES
Uses own equipment and personnel to mill pavements for profiling and grind-out procedures
Millings transported to two locations for stockpiling
Contract requires the use of COLA millings.
![Page 10: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/10.jpg)
10
![Page 11: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/11.jpg)
11
MIX DESIGN PROCESS
Extensive profiling of RAP. Several samples have to be
tested. Extraction and recovery of
individual samples. PG grading of RAP - +PG 82 Blend to PG 64 -10
![Page 12: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/12.jpg)
12
Vulcan Los Angeles Regional Lab
Viscosity Testing
Extraction/Recovery
![Page 13: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/13.jpg)
13
![Page 14: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/14.jpg)
Recycling Agents (ASTM D4552)
RA1 RA5 RA25 RA75 RA250 RA500
Viscosity @ 60C (cSt) 50-175 176-900 901-
45004501-12500
12501-37500
37501-60,000
Flash Point, C, Minimum
218 218 218 218 218 218
Saturates, %, Minimum
30 30 30 30 30 30
Viscosity Ratio (RTFO or TFO
3 3 3 3 3 3
![Page 15: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/15.jpg)
15
Mix Design Procedures
Asphalt Content, Aggregate Gradation and PG or RAP
Gradation of New Aggregate Combined Gradation of Recycled
Mix 75 Blow Marshall Mix Design per
COLA Brown Book
![Page 16: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/16.jpg)
Binder Replacement
Binder Replacement +( (A x B)/C ) x 100
A = RAP percent binder content B = RAP percent in mixture C = Total percent binder content in
mixture.
16
![Page 17: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/17.jpg)
COLA Example
A = RAP AC% = 5.4 B = RAP % in mixture = 50 C = Total percent binder in
mixture = 5.2
Binder Replacement = 51.9%
17
![Page 18: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/18.jpg)
18
Testing
Extensive QC Testing– Gradation and AC% on RAP– Gradation on aggregates– PG 64 -10 and Recycling Agent– 75 Blow Marshalls
Extensive QA testing– 4 to 8 samples– 75 Blow Marshalls– Superpave for ARRA jobs
![Page 19: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/19.jpg)
19
![Page 20: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/20.jpg)
20
![Page 21: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/21.jpg)
21
RAP Processing
![Page 22: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/22.jpg)
22
Stockpiling
![Page 23: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/23.jpg)
23
Finished Product
½-inch minus RAP
![Page 24: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/24.jpg)
24
![Page 25: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/25.jpg)
25
![Page 26: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/26.jpg)
26
![Page 27: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/27.jpg)
27
![Page 28: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/28.jpg)
28
THANK YOU.
![Page 29: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/29.jpg)
29
![Page 30: Pascal Mascarenhas](https://reader035.vdocuments.net/reader035/viewer/2022062319/554a5437b4c905572f8b4aba/html5/thumbnails/30.jpg)
30
Questions?
Pascal MascarenhasVulcan Materials
[email protected] Phone
626-969-2918 Fax626-705-6611 Cell