Sustainable Pavement Maintenance Practices (2011) / Chapter Skim
Currently Skimming:
Pages 13-21
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 13... ...
It includes leadership and stewardship; planning, management, and compliance; environmental elements of core business policies and procedures; recycling and waste reduction; water management; and various other areas. Table 8 briefly summarizes how the ADOT program relates to the seven environmental sustainability impact factor areas.
|
From page 14... ...
New York State DOT Albany, New York, U.S. New Zealand Transport Agency Wellington, New Zealand Comprehensive system-wide framework for a DOT Evaluation of air quality and water quality at a system level Evaluation using a practical and straight-forward approach to assessing sustainability impact factor areas Evaluation using a practical and straight-forward approach to assessing sustainability impact factor areas Comprehensive assessment of dirt and gravel road maintenance Comprehensive city overview of sustainability impact factor areas Utilizes a spreadsheet-based selfassessment of design that could be adapted to the design/selection of pavement preservation and maintenance treatments Provides specific guidance for low-volume roads.
|
From page 15... ...
The ODOT environmental sustainability plan initially focuses on practices at the maintenance yards to ensure that operations do not adversely impact air quality and water quality. Additionally, it furnishes specific recycling targets for 193 bridges that are programmed to be replaced as part of a multi-billion 15 Table 9 ODOT emergency management system case study facts Sustainability Impact Factor Area Description/Relevance to Pavement Preservation and Maintenance Virgin Material/Alternative Material Usage Air Quality/Emissions Water Quality Energy Usage Source: ODOT (2004)
|
From page 16... ...
The GreenPave tool is a direct effort to quantify overall environmental sustainability within MTO's 16 Table 10 WSDOT sustainable pavements Description/Relevance to Pavement Preservation Sustainability Impact Factor Areas and Maintenance Treatments Virgin Material Usage/Alternative Material Usage Program for Pavement in Service Monitoring and Management Air Quality/Emissions RAP = recycled asphalt pavement; RCA = recycled concrete aggregate; HIR = hot in-place recycling; CIR = cold in-place recycling; PMS = pavement management system. • Encourages recycling of RAP and RCA, usage of HIR, CIR, usage of hydraulic cements that are recycled, and use of asphalt shingles • Most of these would relate to design and construction of new or rehabilitated pavements.
|
From page 17... ...
• This is directed at optimizing usage/reusage of recycled materials and to minimize material transportation distances • A total of 14 points is assigned to this category • Directed at design, construction, and rehabilitation, but possibly could be modified for use with pavement preservation and maintenance treatments • Attempts to optimize sustainable designs to include long-life pavements, permeable pavement, noise mitigating pavements, and pavements that minimize the heat island effect • Total of nine points is assigned to this category • Directed at design, construction, and rehabilitation, but possibly could be modified for use with pavement preservation and maintenance treatments • Directs the use of means to minimize road noise • Minimizes energy consumption and GHG emissions • Total of nine points is assigned to this category • Directed at design, construction, and rehabilitation, but possibly could be modified for use with pavement preservation and maintenance treatments • Directs consideration of fuel consumption in decision making • Recognizes innovation and exemplary efforts to foster sustainable pavement designs • Total of four points is assigned to this category • Directed at design, construction, and rehabilitation, but possibly could be modified for use with pavement preservation and maintenance treatments
|
From page 18... ...
. • Focus on reducing roadway sediment runoff into rivers and streams • Primary source of sediment from dirt and gravel roads • Program provides funding to conservation districts and focuses on sensitive maintenance of unpaved roads • Provides funding to control the amount of sediment from dirt and gravel roads and focuses on good pavement preservation and maintenance practices Table 13 City of Philadelphia Description/Relevance to Pavement Preservation Sustainability Impact Factor Area and Maintenance Treatments Virgin Material Usage and Alternative Material Usage Program for Pavement In-Service Monitoring and Management Air Quality/Emissions Water Quality Source: Nutter (2009)
|
From page 19... ...
GreenLITES provides a rational methodology that is based on previous work in the area of measuring environmental sustainability of infrastructure design and construction, such as LEEDTM and 19 Table 14 NYSDOT Greenlites Sustainability Impact Factor Area Description/Relevance to Pavement Preservation and Maintenance Virgin Material Usage and Alternative Material Usage Noise Air Quality/Emissions Water Quality Energy Usage Other: Innovation • Emphasis on limiting virgin material usage and alternative material usage is stressed in the program • Quantification on pavement preservation and maintenance done through credits earned, use of recycled tire rubber, and recycled asphalt pavement • Specific reference to inclusion of measures for reducing pavement noise • Quantification on pavement preservation and maintenance done through credits earned for diamond grinding • Emphasis is placed on reducing impacts to the air through proper maintenance of equipment and appropriate operations • Quantification on pavement preservation and maintenance done through credits earned • Development of protocols to reduce sediment into streams and ensure proper storm water management • Quantification on pavement preservation and maintenance done through credits earned • Credit for reducing electricity and petroleum consumption • Quantification on pavement preservation and maintenance done through credits earned for documented analysis of design that reduces carbon footprint • System encourages engineers to extend the scope of the program to previously unlisted techniques that comply with the spirit of the program • Quantification on pavement preservation and maintenance done through credits earned in Innovative and/or Unlisted Category
|
From page 20... ...
As noted in the summary table, NZTA has the most robust pavement preservation and maintenance environmental sustainability program reviewed in this synthesis. Not only does it cover the full range of environmental sustainability impact factor areas categories, but it is coupled with a life-cycle cost-based pavement design method and a performance-based maintenance contracting system that create an unbending predisposition to environmental sustainability in pavement maintenance.
|
From page 21... ...
Hot mix is only warranted for roads with AADT > 25,000. PCCP warrants are only for high-volume urban motorways • Method inherently reduces the amount of energy and virgin material required for the national highway system Table 16 Summary of case study agency sustainability programs Case Virgin Alternative Pavement In-Service Study Material Material Monitoring and Air Quality/ Water Energy Agency Usage Usage Management Noise Emissions Quality Usage ADOT NYSDOT ODOT WSDOT MTO NZTA PSCC Phila.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.