Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Geotextiles for dust control on unpaved roads
Dust can be a health concern because of its potential to contain respirable particles. Although numerous techniques are used in attempts to control dust generated from gravel roads, all have limitations and the search for more effective means of reducing dust levels continues. Geotextile separators offer the potential to reduce dust while providing enhanced driving characteristics and reduced maintenance of the roads. A field demonstration program was performed to quantitatively document the dust suppression effect of geotextile separators onunpaved, gravelsurfaced roads. The test site, located in Boone County, Missouri included two, 100-m geotextile test sections and a 100-m control section. Two nonwoven geotextiles (AASHTO Class 2), one a spunbonded and the other a needle-punched were used. Sampling events were taken to evaluate the effectiveness of the geotextiles for dust control. Initially, dust collected on the control section was 20 % to 30 % of the pre-geotextile dust levels. Over a six month period the dust levels in the control section increased and ranged from 80 % to 230 % of the pre-geotextile dust levels. Dust levels from the geotextile sections also increased. After six months in service, the control section contained 23 percent silt sized particles while the geotextile sections contained from 6 to 12 percent silt size particles. The US EPAs emissions factor calculation showed the geotextile section to reduce the dust emissions factor by 50 to 75 percent compared to that for the control section (58 Lbs/Vehicle Mile Traveled).
Geotextiles for dust control on unpaved roads
Dust can be a health concern because of its potential to contain respirable particles. Although numerous techniques are used in attempts to control dust generated from gravel roads, all have limitations and the search for more effective means of reducing dust levels continues. Geotextile separators offer the potential to reduce dust while providing enhanced driving characteristics and reduced maintenance of the roads. A field demonstration program was performed to quantitatively document the dust suppression effect of geotextile separators onunpaved, gravelsurfaced roads. The test site, located in Boone County, Missouri included two, 100-m geotextile test sections and a 100-m control section. Two nonwoven geotextiles (AASHTO Class 2), one a spunbonded and the other a needle-punched were used. Sampling events were taken to evaluate the effectiveness of the geotextiles for dust control. Initially, dust collected on the control section was 20 % to 30 % of the pre-geotextile dust levels. Over a six month period the dust levels in the control section increased and ranged from 80 % to 230 % of the pre-geotextile dust levels. Dust levels from the geotextile sections also increased. After six months in service, the control section contained 23 percent silt sized particles while the geotextile sections contained from 6 to 12 percent silt size particles. The US EPAs emissions factor calculation showed the geotextile section to reduce the dust emissions factor by 50 to 75 percent compared to that for the control section (58 Lbs/Vehicle Mile Traveled).
Geotextiles for dust control on unpaved roads
Freeman, Elisabeth A. (Autor:in) / Bowders, John J. (Autor:in)
2007
14 Seiten, 7 Bilder, 4 Tabellen, 12 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Use of Non Woven Geotextiles for Unpaved Roads
| British Library Conference Proceedings | 1991
Geotextiles and unpaved roads - presentation of three case studies
| Tema Archiv | 1995
Geotextiles for unpaved roads—A review of design procedures
| Elsevier | 1987
Laboratory performance of unpaved roads reinforced with woven coir geotextiles
| Tema Archiv | 2009