NRMCA Home  


Home | Recent Files

Approximation Assessment of Photocatalytic
Name: Approximation Assessment of Photocatalytic
File: Alleman Paper 05-16-16 D-2.pdf
Size(MB): 0.16MB
Extension: PDF
Speaker Name: Alleman, J.E.
Managed by: sdickens
Date Uploaded: June 21, 2016; 12:06 pm
Download Count: 474
Downloads This Month: 474

Your Geographic Information:

Country: United States
Zip Code:
Area Code: 0
Your IP:

PAPER - This paper examines an approximation method to qualitatively assess the air-cleaning performance (i.e., specifically the elimination of aerial nitrogen oxide, NO, released within vehicular exhaust) by full-scale pavements which contain photo-catalytically reactive titanium dioxide under optimal conditions. Two hypothetical road configurations were considered using this method, including both a two-lane, low traffic density (i.e., 4,000 full-day AADT) and a four-lane, moderate traffic density (i.e., 10,000 full-day AADT) design. These options were then comparatively examined on the basis of expected European Union or United States vehicular emission levels. Using this paperís approximation method, and assuming best-case scenario conditions (i.e., original, un-aged, peak catalytic performance under optimal temperature, relative humidity, etc. conditions), day-time-only percentile removals in the ~mid-60% to ~90% range were predicted for EU two- and four-lane roadways with low to moderate traffic densities. In the case of similar US highway options, this methodís approximated day-time-only elimination percentile results were lower than what was predicted for similar EU road options, with a range of ~30% to ~40%. These latter, lower US road approximations were believed to be related to higher expected US versus EU vehicle emission levels (i.e., by a factor of ~two- to ~three-fold for light and heavy duty vehicles).

NRMCA Download Center



National Ready Mixed Concrete Association. NRMCA Reserve all rights all the content of this site.
Please contact Web Master at NRMCA at webmaster@nrmca.org with any questions.
All content in this Download Center is the property of National Ready Mixed Concrete Association. Any illegal linking, altering and abusing the associated file(s) without permission is not tolerated. And the person or entity held responsible will be prosecuted to the full extend of the law as it permits.