Evaluating life cycle costs of perpetual pavements in china using operational pavement management system - free download as pdf file (pdf), text file (txt) or read online for free highway transportation is considered as vital factor in china’s economic growth many high grade highways have been constructed in china during the last decades. This paper presents a method for assessing road pavements using a life cycle costing approach it discusses the use of the method and outlines the way in systems and analytical tools to evaluate pavements, including pavement use and the resulting deterioration the life cycle costing model, detailed in this paper, is. An evaluation of life cycle cost analysis of airport pavement abstract— a runway pavement is considered as one of the central facilities in an airport ensuring safety for aircraft operations and providing adequate comfort to the passenger are. Pavement life cycle assessment workshop 4 ucprc-tm-2010-03 day 2—thursday, may 6 8:30–9:00 am organization of groups and discussions (30 min) the assignment to groups, a discussion of the break out discussion process, and. Life cycle assessment of asphalt pavement maintenance 5 report date sustainability therefore, a systematic approach is needed to evaluate the environmental impacts of pavement system on its whole life cycle preservation, rehabilitation, and disposal that go into all phases of the life cycle of pavement the impact of in-10 service.
This section discusses the basic pavement life-cycle and how maintenance and rehabilitation affect this life-cycle all pavement deteriorates over time typically, pavement deteriorates at an ever-increasing rate: at first very few distresses are present and the pavement stays in relatively good condition, but as it ages more distresses develop. Many agencies are turning to life-cycle cost analysis (lcca) as a means of evaluating the long-term economic viability of pavement designs as such, it is important for each agency to conduct a realistic assessment of pavement economics in order to provide objective input into the life-cycle cost analysis. - uncertainty assessment in all life-cycle stages - role of pcr and epds in the implementation of lca pavement life-cycle assessment will be of interest to academics, professionals, and policymakers involved or interested in highway and airport pavements.
Understanding the asphalt pavement life cycle asphalt is an organic material and is thus susceptible to the actions of nature from the day it is placed, asphalt pavements begin to deteriorate air, water and ultraviolet rays from the sun cause the surface to oxidize. Pavement evaluation why do we need to evaluate pavements in general, pavements perform well for the first 75% of the life cycle, then deteriorate rapidly for the remainder of the life cycle the length of time a pavement remains above the good condition level depends on the quality and timing of maintenance. Evaluating effect of preservation treatments on pavement performance and service life james bryce & gonzalo rada effect of preservation on life cycle costs life extension pavement 3 life extension life extension pavement 2 pavement 1 threshold. Pavement surface evaluation and rating (paser) manuals asphalt paser manual, 2002, 28 pp #2 how vehicle loads affect pavement performance #3 lcc—life cycle cost analysis #4 road drainage timely and effective maintenance can extend a pavement’s life crack. This report presents a brief overview of the various components and strategies used in pavement analysis, maintenance and rehabilitation are discussed.
Evaluation of pavement life cycle cost analysis: review and analysis peyman babashamsia,⇑, nur izzi md yusoﬀa, halil ceylanb, nor ghani md norc, hashem salarzadeh jenatabadid adepartment of civil & structural engineering, universiti kebangsaan malaysia, 43600 ukm bangi, selangor, malaysia b department of civil, construction and environmental engineering, iowa state university, ames, ia. Uses engineering economic principles to evaluate long-term investment options the caltrans uses life-cycle cost analysis software, which is called realcost realcost is a program developed by the federal highway administration (fhwa) and was chosen by pavement life pavement. Reducing pavement life cycle costs and greenhouse gases john harvey university of california pavement research center city and county pavement improvement center • agencies are evaluating up to 15% • these changes to mix design specs – decrease cost – decrease environmental impact. Life-cycle performance life-cycle 18 asphalt summer 1999 the pavement sections for climatic conditions of dry freeze and dry no- or service life of pavements was not seen in the performance equations a typical logarithmic decay curve was found to provide the best-fit curve (see figure 1) the pavements do not drop.
Life-cycle cost life-cycle cost analysis is one of the tools by which pavement structures are evaluated and eventually selected by pavement owners the life-cycle cost of a road includes the money spent on initial construction of a road, maintenance over its lifetime, and the costs to users for their delays during maintenance and reconstruction. The pavement life cycle in particular, traffic delay during construction activities, the use of the pavement (ie, how the pavement affects fuel consumption and the environment while in. 7 lowest life cycle cost managing by lowest life cycle cost is the primary objective of pavement management wsdot has been a strong innovator in employing the principles of asset management within a state dot.
A pavement performance and life-cycle cost evaluation has been completed for a specific polymer- modified asphalt cement (styrelf) that is widely used in ontario and quebec  this polymer. Life cycle costs for asphalt-rubber paving materials rg hicks and jon a epps assist in the evaluation of alternative pavement design strategies for example, in the developed a training course titled “life cycle cost analysis in pavement design. Pavements is developed to evaluate the environmental burdens of five phases in the life cycle: material production, construction, maintenance, use, and end-of-life the framework is incorporated into a user. Evaluation of pavement life cycle cost analysis review & analysispdf - download as pdf file (pdf), text file (txt) or read online scribd is the world's largest social reading and publishing site search search.
Pavement types, as well as how the contributions from the various life cycle components change across these functional types 2) benchmark life cycle ghg emissions of all concrete pavements that are constructed each. In pavement management, lcca has been applied either as the least annualised life-cycle return that is calculated in perpetuity , or as the least present worth of the life-cycle cost and benefit to evaluate the cost-effectiveness of network level maintenance and rehabilitation processes, a basic type of lcca approach was used . Acknowledgment of sponsorship evaluation of existing pavements for rehabilitation this chapter provides an introduction to project-level pavement evaluation, guidance for data consideration in selecting feasible rehabilitation alternatives and for life cycle cost analysis (lcca.
Evaluation of existing pavements 2-1 6/30/00 use of these techniques is often a cost-effective strategy (in the framework of life-cycle cost), and delays the placement of a costly overlay, recycling, or even reconstruction, for survey is not used to evaluate pavement condition on individual projects but on a network level. Effectiveness of maintenance over pavement life-cycle, for various pavement fam ilies and developed trade-off and marginal effects models between main tenance effort and service life ( 15 ) i n. 2 introduction many agencies are turning to life-cycle cost analysis (lcca) as a means of evaluating the long-term economic viability of pavement.