Author: Gregory E. MuleskiPublisher:
ISBN:
Category : Dirt roads
Languages : en
Pages : 81
Book Description
Evaluation of the Effectiveness of Chemical Dust Suppressants on Unpaved Roads
Author: Gregory E. MuleskiPublisher:
ISBN:
Category : Dirt roads
Languages : en
Pages : 81
Book Description
Project Summary Evaluation of the Effectiveness of Chemical Dust Suppressants on Unpaved Roads
Author: Evaluation of the Effectiveness of Chemical Dust Suppressants on Unpaved Roads
Author: Gregory E. MuleskiPublisher:
ISBN:
Category : Dirt roads
Languages : en
Pages : 3
Book Description
Road Dust Control Techniques
Author: Graham FoleyPublisher:
ISBN: 9780869107232
Category : Dust control
Languages : en
Pages : 143
Book Description
Evaluating Dust Suppressant Efficacy and Roadbed Stability of Dirt and Gravel Roads
Author: Andrew EckPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Fugitive dust emissions from dirt and gravel roads are the largest source of particulate matter less than ten microns (PM10) in the United States. This dust poses a threat to human and environmental health and is sometimes mitigated adding commercial dust suppression products to the road surface. Oil and gas produced waters (OGPW) can have similar chemistry to commercially available dust suppressant products and are an inexpensive or often free alternative for road managers. Pennsylvania and at least twelve other states have regulated OGPW for use as dirt and gravel road dust suppressants. Previous studies demonstrated that elevated concentrations of total dissolved salts (TDS) is predictive of better performing dust suppressant. However OGPW with high sodium content have been shown to increase fine material dispersion, which can drastically reduce dust suppression efficacy. This study evaluated dust suppression efficacy and roadbed stability of twelve OGPW, five commercial hygroscopic products (calcium and magnesium chloride salts), and five commercial organic products. Dust suppression efficacy was tested with an aerosol monitor by tumbling treated disks of roadbed material in a mechanical drum inside of a humidity-controlled chamber. Roadbed stability was evaluated by measuring total suspended solids in runoff from a model roadbed during a simulated rain event. Although OGPW can share some chemical characteristics (e.g. Ca and Mg concentrations, TDS) with commercial products, their efficacy is often no better to slightly worse than untreated roads or those treated with water alone. All OGPW from the Appalachian Basin performed significantly worse than the ten commercial products tested. OGPW treated roads also lost up to 15% more mass (up to 100 kg more per mile) in simulated rain events compared to water-treated roads. The high ratio of sodium content found in OGPW from the Appalachian Basin makes them ineffective dust suppressants that contribute to dustier and less-stable roads that likely have higher indirect costs than utilization of commercial dust palliatives. A field study of the impacts of chronic OGPW use as a road dust suppressant is presented in Chapter 3. Traces of OGPW including increased radium and bromide to chloride ratios are found in road aggregate, ditches, and wetland soil cores near historically treated roads. In wetland cores, age dating reveals that some of these tracers accumulate around the time that OGPW spreading in northwestern Pennsylvania was increasing dramatically. Finally, this chapter identifies areas for future research.
Determination and Evaluation of Alternative Methods for Managing and Controlling Highway-related Dust
Author: Ryan J. MorganPublisher:
ISBN:
Category : Dust control
Languages : en
Pages : 132
Book Description
This study was conducted to evaluate the effectiveness of several widely used dust suppressants through quantitative field testing on two of Iowa's most widely used secondary road surface treatments: crushed limestone rock and alluvial sand/gravel. These commercially available dust suppressants included: lignin sulfonate, calcium chloride, and soybean oil soapstock. These suppressants were applied to 1000 ft test sections on four unpaved roads in Story County, Iowa.
Developing Performance Models to Evaluate the Cost-effectiveness of Using Chemical Dust Treatments on Gravel Roads
Author: Mohammed Ali OkokPublisher:
ISBN: 9781369644456
Category : Dust control
Languages : en
Pages : 146
Book Description
This study is part of a multiple year study conducted at the University of Wyoming to assess the effectiveness of dust suppressant treatments on gravel roads. The multiple year study was conducted to assist the Wyoming Department of Transportation and the Federal Highway Administration optimize the use of the Congestion Mitigation and Air Quality (CMAQ) funds. The CMAQ program is a federal program implemented to fund projects that contribute to air quality improvements. For a number of years, Wyoming counties have used CMAQ funds to apply chemical dust suppressant treatment to gravel roads. The state of Wyoming owns a large inventory of low volume gravel roads that connects rural Wyoming areas. The main objectives of this study were to assess the effectiveness of the CMAQ program in Wyoming, develop long-term gravel roads performance models, and conduct a life cycle cost analysis to compare the costs of treating and maintaining gravel roads. The study utilizes field data and exploratory and statistical analyses to assess and evaluate the performance of chemical treatment on gravel roads. The results of this study will be used in developing cost effective maintenance strategies that will aid in optimizing the Wyoming asset management program. A comprehensive long-term performance model was developed to predict the service life of treatment on gravel roads. A life cycle cost analysis was conducted to compare the cost of maintaining untreated gravel roads with the cost of maintaining treated gravel roads. The results showed that higher traffic speeds, and higher percentages of fines in the soil had the highest contribution to road deterioration and increase in dust generation from treated roads. Dust treatment was found to have a service life of 1 year before dust emission rates went back to before treatment levels. The life cycle cost analysis indicated that the initial cost of applying dust suppressant treatment to gravel roads is expensive but it will increase the road service life and significantly reduce dust generation and improve air quality.
Effectiveness and Environmental Impact of Road Dust Suppressants
Author: Jonathan Q. AddoPublisher:
ISBN:
Category : Dust control
Languages : en
Pages : 148
Book Description
Evaluation of Dust Suppressants for Gravel Roads
Author: Karin EdvardssonPublisher:
ISBN: 9789174156126
Category :
Languages : en
Pages : 64
Book Description
Author: