Assessing the Life-Cycle Costs of Pavement Rehabilitation Strategies Used in Long-Term Pavement Performance Program

2022 ◽  
Vol 148 (1) ◽  
Author(s):  
Daniel Offenbacker ◽  
Yusuf Mehta
Keyword(s):  
Life Cycle ◽  
Pavement Performance ◽  
Life Cycle Costs ◽  
Pavement Rehabilitation ◽  
Rehabilitation Strategies

The National Infrastructure Reserve Bank

2016 ◽  
Vol 22 (1) ◽  
pp. 38-48
Author(s):  
Stephen M. Hubbard
Keyword(s):  
Life Cycle ◽  
Life Cycle Costs ◽  
National Politics ◽  
Size Of Government ◽  
Total Size ◽  
Reserve Bank ◽  
Deferred Maintenance ◽  
Reducing Costs ◽  
National Infrastructure

This article examines the implementation of a novel national infrastructure bank (NIB) which coins or “makes” U.S. currency to provide capital for infrastructure loans. This approach eliminates bond expense while reducing long-term life cycle costs caused by deferred maintenance and construction inflation. It also addresses the three main issues that have blocked prior NIB proposals by providing a near zero-cost source of capital, reducing the total size of government employment, and isolating funding from national politics while reducing costs by US$75 to US$220 billion and creating up to three million or more jobs annually.

Evaluation of the long-term performance and life cycle costs of GTR asphalt pavements

2016 ◽  
Vol 114 ◽  
pp. 261-268 ◽  
Author(s):  
Munir D. Nazzal ◽  
Md. Tanvir Iqbal ◽  
Sang Soo Kim ◽  
Ala R. Abbas ◽  
Moses Akentuna ◽  
...  
Keyword(s):  
Life Cycle ◽  
Asphalt Pavements ◽  
Life Cycle Costs ◽  
Long Term Performance ◽  
Term Performance

Salt marshes for flood risk reduction: Quantifying long-term effectiveness and life-cycle costs

2019 ◽  
Vol 171 ◽  
pp. 96-110 ◽  
Author(s):  
Vincent Vuik ◽  
Bas W. Borsje ◽  
Pim W.J.M. Willemsen ◽  
Sebastiaan N. Jonkman
Keyword(s):  
Life Cycle ◽  
Risk Reduction ◽  
Salt Marshes ◽  
Flood Risk ◽  
Life Cycle Costs ◽  
Flood Risk Reduction

scholarly journals Residential Construction with a Focus on Evaluation of the Life Cycle of Buildings

Buildings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 524
Author(s):  
Eduard Hromada ◽  
Stanislav Vitasek ◽  
Jakub Holcman ◽  
Renata Schneiderova Heralova ◽  
Tomas Krulicky
Keyword(s):  
Life Cycle ◽  
Residential Buildings ◽  
Life Cycle Costs ◽  
The Czech Republic ◽  
Implementation Phase ◽  
Acquisition Costs ◽  
Residential Projects ◽  
Total Life

The article focuses on highlighting the role of life cycle costing (LCC) in the preparatory and implementation phase of residential projects. It involves the evaluation of several investment scenarios in the pre-investment phase, the choice between variants of the design of the entire building or its parts, and the choice of variants of structures and equipment with acceptable parameters. An innovative method of evaluating the life cycle of buildings is described in the article. This method was tested in selected residential projects realized by Skanska in the Czech Republic. Experience from construction practice shows that the choice of variants, constructions, or equipment of buildings only on the basis of the lowest acquisition costs (lowest bid prices) is wrong. The LCC calculation tool has been designed to model life cycle costs of individual variants of construction designs with different input parameters. It is possible to analyze the components or equipment that have the greatest impact on total life cycle costs. The article presents a tool that evaluates the long-term economic efficiency of the proposed residential buildings in terms of analysis of life cycle costs. The article will also expand the knowledge of the professional and general public about the importance of examining investment and operating costs already in the phase of construction preparation.

Evaluation of subgrade and climatic zone influences on pavement performance in the Canadian Strategic Highway Program's (C-SHRP) Long-Term Pavement Performance (LTPP) study

2002 ◽  
Vol 39 (2) ◽  
pp. 377-387 ◽  
Author(s):  
Susan Tighe
Keyword(s):  
Climatic Factors ◽  
Pavement Performance ◽  
Valuable Insight ◽  
Pavement Rehabilitation ◽  
Traffic Loading ◽  
Subgrade Soils ◽  
Pavement Roughness ◽  
Subgrade Soil ◽  
Asphalt Overlays

Sixty-five sections in 24 provincial test sites received pavement rehabilitation comprising of various thicknesses of asphalt overlays, as part of the Canadian Long-Term Pavement Performance (C-LTPP) study, which was initiated in 1989. This paper describes the impacts of the various alternative rehabilitation treatments on pavement performance in terms of roughness progression under comparative climatic, subgrade soil, and traffic loading conditions. Some findings from this study include (i) in wet, high-freeze zones, thinner overlays show a higher rate of roughness progression than thicker overlays, regardless of subgrade type; (ii) in dry, high-freeze zones, roughness progression for medium and thick overlays is relatively small; (iii) in wet, low-freeze zones, thinner overlays combined with fine subgrade soils show the highest rate of roughness progression; and (iv) traffic, in terms of equivalent single axle loads (ESALs), seemed to have a limited effect on all of the above; this was attributed largely to the fact that all of the traffic essentially fell into one level, where 200 000 ESALs per year was designated as the boundary between low and high traffic levels. The methodology developed in this paper provides valuable insight into how subgrade and climatic factors influence pavement performance and can be applied to performance trend analysis of other pavements with similar climatic, subgrade, and traffic loading conditions.Key words: subgrade type, climatic zones, pavement roughness, international roughness index (IRI), Long-Term Pavement Performance (LTPP).

Performance of Flexible Pavement Rehabilitation Treatments in the Long-Term Pavement Performance SPS-5 Experiment

2003 ◽  
Vol 1823 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Kathleen T. Hall ◽  
Carlos E. Correa ◽  
Amy L. Simpson
Keyword(s):  
Asphalt Pavement ◽  
Fatigue Cracking ◽  
Flexible Pavement ◽  
Asphalt Pavements ◽  
Pavement Performance ◽  
Recycled Asphalt ◽  
Pavement Rehabilitation ◽  
Pretreatment Condition ◽  
Asphalt Overlay

The results of a study conducted to assess the relative performance of different flexible pavement rehabilitation treatments, including the influence of pretreatment condition and other factors, are presented. The data used in the study were drawn from the Long-Term Pavement Performance Studies' Specific Pavement Study (SPS) SPS-5 and General Pavement Study (GPS) GPS-6B experiments. The rehabilitation treatments used in the SPS-5 experiment are 2- and 5-in. overlays with virgin or recycled asphalt concrete mixes with or without preoverlay milling. Overlay thickness and preoverlay roughness levels were the two factors that most influenced the performance of the asphalt overlays of asphalt pavements in the SPS-5 experiment with respect to roughness, rutting, and fatigue cracking. Over the long term, the 5-in. overlays outperformed the 2-in. overlays with respect to roughness, rutting, and fatigue cracking. Overlay mix type (virgin versus recycled) and preoverlay preparation (with or without milling) had slight and inconsistent effects. The average initial postoverlay international roughness index of an asphalt overlay of an asphalt pavement was found to be 0.98 m/km. The data show a slight but statistically significant tendency for asphalt pavements overlaid when they were rougher to have more initial roughness after overlay than asphalt pavements overlaid when they were smoother. The data show that, on average, about 6 mm of rutting develops in the first year or so after placement of an asphalt overlay of an asphalt pavement. This is presumably due to compaction of the mix by traffic and appears to be independent of the overlay thickness, mix type, preoverlay preparation, and preoverlay rutting level.

Performance of Rigid Pavement Rehabilitation Treatments in the Long-Term Pavement Performance SPS-6 Experiment

2003 ◽  
Vol 1823 (1) ◽  
pp. 64-72 ◽  
Author(s):  
Kathleen T. Hall ◽  
Carlos E. Correa ◽  
Amy L. Simpson
Keyword(s):  
Performance Studies ◽  
Concrete Pavement ◽  
Pavement Performance ◽  
International Roughness Index ◽  
Rigid Pavement ◽  
Pavement Rehabilitation ◽  
Pretreatment Condition ◽  
Diamond Grinding ◽  
Asphalt Overlays

The results of a study conducted to assess the relative performance of different jointed rigid pavement rehabilitation treatments, including the influence of pretreatment condition and other factors, are presented. The data used in the study were drawn from the Long-Term Pavement Performance Studies' Specific Pavement Study (SPS) SPS-6 and General Pavement Study (GPS) GPS-7B experiments. The rehabilitation treatments used in the SPS-6 experiment were minimal and intensive nonoverlay repair, 4-in. asphalt overlays with minimal and intensive preoverlay preparation, 4-in. overlays with sawed and sealed joints, and 4- and 8-in. asphalt overlays of cracked and seated concrete slabs. Overall, the rigid pavement rehabilitation treatments in the SPS-6 experiment could be ranked from most to least effective in the following order: 8-in. overlay of cracked or broken and seated pavement, 4-in. overlay (of either intact or cracked or broken and seated pavement, with or without sawing and sealing of joints and with either minimal or intensive preoverlay repair), concrete pavement restoration with diamond grinding, and concrete pavement restoration without diamond grinding. Concrete pavement restoration with diamond grinding yielded an initial posttreatment international roughness index (IRI) of 1.05 m/km, on average, whereas restoration without diamond grinding yielded no benefit in IRI and in fact tended to leave the pavement rougher than before. In the long term, both restoration and overlay treatments reduced long-term roughness, rutting, and cracking levels compared with those on the control sections, but the conditions of the restored test sections are approaching those of the control sections faster than those of the overlay sections.

scholarly journals LCC-Based Appraisal of Ballasted and Slab Tracks: Limits and Potential

2018 ◽  
Vol 13 (4) ◽  
pp. 475-499 ◽  
Author(s):  
Filippo Giammaria Pratico ◽  
Marinella Giunta
Keyword(s):  
Life Cycle ◽  
High Speed ◽  
Primary Objective ◽  
Life Cycle Costs ◽  
Suitable Model ◽  
Train Speed ◽  
Set Up ◽  
The Life Course ◽  
Breakeven Point

The increase in train speed and axle load is an important goal to achieve in the future.  From a technical standpoint, ballastless tracks seem to be suitable to the aim, especially when high-speed passenger trains share the track with freight trains. Based on the above, the primary objective of this study is the comparison between ballasted and slab tracks regarding total costs over the life course. A suitable model to evaluate the total costs of competing solutions is set up. A solution for solving the issue of CO2 price fluctuation and for the quantification of External Costs is also formulated.  Life Cycle Costs are estimated based on agency, environmental and present user values. Analyses and results show that when Life Cycle Costing-based approaches are applied: i) Agency Costs have to be considered in the long-term perspective; ii) expected life has an appreciable impact and several solutions and systems, more affordable in the short term, yield unfavourable maintenance and renewal processes; iii) if total costs are considered over track life, the breakeven point is very far from the construction. Furthermore, the differences between the total Present Values of the two solutions become too small to yield sound conclusions in favour of the ballasted vs. the ballastless solution.

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