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Evaluation of Exhaust Gas Emissions and Worker Esposure
from Asphalt Rubber Binders in Hot Mix Asphalt Mixtures
This page last reviewed October 8, 2008
“Control Mix 2 contained 100 % virgin aggregates and asphalt cement with a penetration of 200-250, equivalent to an AC-2.5. The rubber mix 1 (RBR1) also contained virgin aggregates and asphalt rubber binder manufactured using the “wet” process…”
Table 3 - Continuous Emissions Measurements and Method 18 Results (Units m/m3)
Evaluation of Exhaust Gas Emissions and Worker Exposure from Asphalt
Rubber Binders in Hot Mix Asphalt Mixtures. (Gunkel, 1994)
| Operating Data / Conditions / Measurements | Control 2 | RBR 1 |
| HMA Production Rate (tons per hour) | 351 | 357 |
| Dry Aggregate Rate (TPH) | 330 | 333 |
| Asphalt Cement Added (%) | 5.75% | 6.84% |
| Materials Moisture Content | 4.17% | 5.21% |
| Fuel Consumption (gal/hr) | 655 | 690 |
| Exhaust Gas Temperature (F) | 311 | 324 |
| Mix Temperature (F) | 296 | 316 |
| Sample Volume (SCF) | 46.501 | 42.823 |
| Sample Volume (cu. m) | 1.317 | 1.213 |
| Exhaust Gas Moisture (%) | 27.0% | 29.3% |
| Stack Temperature (F) | 260 | 271 |
| Actual Exhaust Gas Flow (ACFM) | 89,540 | 95,450 |
| Dry Exhaust Gas Flow (DSCFM) | 47,076 | 47,836 |
| Dry Exhaust Gas Flow (DSCMM) | 1,333 | 1,355 |
| CO2, %, Orsat Result | 5.79% | 6.02% |
| O2, %, Orsat Result | 12.75% | 12.10% |
| N2, %, Orsat Result | 81.46% | 81.88% |
| Carbon Dioxide (CO2) | 6.00% | 6.48% |
| Oxygen (O2) | 12.87% | 12.18% |
| Carbon Monoxide (CO) | 430.5 | 259.5 |
| Nitrogen Oxides (NOx) | 139.3 | 124.4 |
| Sulfur Dioxide (SO2) | 74.4 | 76.7 |
| Non-Methane Total Hydrocarbons (NMTHC) as Carbon | 225.5 | 183.0 |
| Methane (CH4) as Measured | 27.7 | 10.6 |
| Methane as Carbon | 20.7 | 7.9 |
| Total Hydrocarbons (THC) as Carbon | 245.1 | 191.3 |
| NMTHC as Carbon | 225.5 | 183.0 |
Text above excerpted from Carlson, Douglas D. and Han Zhu. “ Asphalt-Rubber: An Anchor to Crumb Rubber Markets,” presented at the Third Joint UNCTAD / IRSG Workshop on Rubber and the Environment - International Rubber Forum, Veracruz, Mexico, October 7, 1999. (http://www.pcaz.com/rpa/pdf/anchor.pdf)
| Douglas D. Carlson Director of Government Relations Rubber Pavements Association 1801 South Jentilly Lane, Suite A-2 Tempe, Arizona 85281-5738 |
Han Zhu, Ph.D. College of Civil and Environmental Engineering Arizona State University Tempe, Arizona 85287-5306 |
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| Website: www.rubberpavements.org | Email: han.zhu@asu.edu | |
| Email: dougc@rubberpavements.org | Telephone: 1-480-965-2745 | |
| Telephone: 1-480-517-9944 | Fax: 1-480-965-0557 | |
| Fax: 1-480-517-9959 |
Original Source: Gunkel, Kathryn O’C P.E., “Evaluation of Exhaust Gas Emissions and Worker Exposure from Asphalt Rubber Binders in Hot Mix Asphalt,” Wildwood Environmental Engineering Consultants, Inc., Michigan Department of Transportation, March 1994.
