Download or read book Cost effective Pavement Preservation Solutions for the Real World written by W. James Wilde and published by . This book was released on 2014 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a summary of pavement preservation activities and recommended uses, expected longevity, and expected pavement life extension. It also includes some basic information intended to be used by those less familiar with pavement preservation, pavement management, life cycle cost analysis, cost estimating, contracting methods and others to help inform and educate in this important aspect of pavement engineering. Tools and techniques are presented to assist local agency engineers in evaluating costs, benefits, timing, longevity, and the decision-making process for developing an effective pavement preservation program on an individual pavement segment or over an entire network. The report includes examples using real pavement engineering data from several cities and counties in Minnesota to demonstrate topics such as activity timing and the benefits of a preventive maintenance plan rather than a reactive one. A set of guidelines was developed as part of the associated project intended to serve as reference material and as a training program.

Download or read book Cost effective Preventive Pavement Maintenance written by Donald N. Geoffroy and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to highway agency executive management including administrative, budget, and finance personnel; pavement design, construction, and maintenance engineers; and maintenance operations personnel, including supervisors and maintenance crew leaders. This synthesis describes the state of the practice with respect to setting a coherent strategy of cost-effective preventive maintenance for extending pavement life. This report of the Transportation Research Board describes the practices of state, local, and provincial transportation agencies that are attempting to minimize the life-cycle costs of pavements and are identifying, during the design of the pavement rehabilitation, reconstruction, or construction projects, the future preventive maintenance treatments and the timing and funding for those treatments. It includes a review of domestic literature and a survey of current practices in North America. The appendices include a primer on pavement design and construction, the benefits of preventive maintenance of pavements, a summary of the questionnaire data collected, a simulation of pavement management strategies, and an example process to demonstrate the cost- effectiveness of preventive maintenance.

Download or read book Pavement Asset Management written by Ralph Haas and published by John Wiley & Sons. This book was released on 2015-04-27 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive and practical, Pavement Asset Management provides an essential resource for educators, students and those in public agencies and consultancies who are directly responsible for managing road and airport pavements. The book is comprehensive in the integration of activities that go into having safe and cost-effective pavements using the best technologies and management processes available. This is accomplished in seven major parts, and 42 component chapters, ranging from the evolution of pavement management to date requirements to determining needs and priority programming of rehabilitation and maintenance, followed by structural design and economic analysis, implementation of pavement management systems, basic features of working systems and finally by a part on looking ahead. The most current methodologies and practical applications of managing pavements are described in this one-of-a-kind book. Real world up-to-date examples are provided, as well as an extensive list of references for each part.

Download or read book Life cycle Cost Analysis of Pavement Preservation Techniques in Texas written by Wilfrido Martinez-Alonso and published by . This book was released on 2017 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proper implementation of pavement preservation techniques can extend the life of a pavement structure in a cost-effective manner. For this reason, a large part of the Texas Department of Transportation (TxDOT) annual budget is assigned to the maintenance and rehabilitation of the State highway network. Within this budget, a fair share is allocated to the implementation of preventive maintenance (PM) techniques, whose timely application has proved the best approach to keep the pavement sections in “Good” or “Very Good” condition. The main objective of this research study was to develop a probabilistic life-cycle cost analysis (LCCA) that allowed the evaluation and comparison of highway pavement sections subjected to one of the three main PM treatments used in Texas, namely, chip seals, microsurfacing and thin overlays. Effective life and the cost per mile lane were the main variables used to develop the analysis. The analysis was performed through Monte Carlo Simulation using data from TxDOT databases containing historical information on more than 14,000 projects constructed between 1994 and 2016. Because TxDOT maintains a plethora of information on its databases, the methodology to use those databases and to extract the relevant information used in this study was also described. During the study, the effect of the facility type, traffic volume and traffic loads on the treatments were also analyzed. Based on the results of the analysis, it was established that all three treatments present a similar service life regardless of external factors, but have different costs, with chip seals having the lowest, followed by microsurfacing and thin overlays. Findings suggest that chip seals have the most cost-effective LCC, even in environments where they are not commonly employed, like heavily trafficked sections. However, microsurfacing emerges as an interesting alternative as traffic volumes and traffic loads increase. Finally, thin overlays are to be evaluated in a case-by-case basis as they have the less predictable behavior. This is most probably consequence of being the newest type of treatment, having the steepest learning curve. They could work well in pavement sections located in intersections, turning points and stop signs, where higher shear stresses are involved.

Download or read book Pavement Life Cycle Assessment written by Imad L. Al-Qadi and published by CRC Press. This book was released on 2017-04-11 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: An increasing number of agencies, academic institutes, and governmental and industrial bodies are embracing the principles of sustainability in managing their activities and conducting business. Pavement Life-Cycle Assessment contains contributions to the Pavement Life-Cycle Assessment Symposium 2017 (Champaign, IL, USA, 12-13 April 2017) and discusses the current status of as well as future developments for LCA implementation in project- and network-level applications. The papers cover a wide variety of topics: - Recent developments for the regional inventory databases for materials, construction, and maintenance and rehabilitation life-cycle stages and critical challenges - Review of methodological choices and impact on LCA results - Use of LCA in decision making for project selection - Implementation of case studies and lessons learned: agency perspectives - Integration of LCA into pavement management systems (PMS) - Project-level LCA implementation case studies - Network-level LCA applications and critical challenges - Use-phase rolling resistance models and field validation - 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.

Download or read book Minnesota Department of Transportation Research Services Annual Report written by and published by . This book was released on 2009 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication provides a guide to the Minnesota Department of Transportation's current research activities.

Download or read book Solutions written by Asphalt Emulsion Manufacturers Association and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pavement Preservation Technology in France South Africa and Australia written by and published by DIANE Publishing. This book was released on 2002 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: An increasing number of highway agencies have found that applying relatively low-cost surface preservation treatments can extend the service life of pavement. The Federal Highway Administration, American Association of State Highway and Transportation Officials, and National Cooperative Highway Research Program sponsored a scanning study of France, South Africa, and Australia to investigate innovative programs for pavement preservation. The U.S. delegation observed that the countries visited are committed to designing and building long-lasting structural pavement sections on their national roadway networks.

Download or read book PAVEMENT MAINTENANCE AND MANAGEMENT written by Faiq M. Sarhan Al-Zwainy and published by Lulu.com. This book was released on 2020-03 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was written by academic's and practitioners who have lead the implementation of highway management processes and tools at several major corporations. The contents of this book have been presented in an interesting and enjoyable way, enhanced by real pictures of highway projects and pavement maintenance. This book contains five chapters, the first chapter entitled MAINTENANCE MANAGEMENT: It was to clarify the concept and importance of maintenance and management professionally and smoothly, While the title of the second chapter is the HIGHWAY PROJECTS, and provided a detailed explanation of the management and implementation of highways, while reviewing the types and importance in the construction sector. The third chapter, entitled PAVEMENT DETERIORATION: The researchers reviewed the types of DETERIORATION in the riged and asphalt pavement, and explained the methods of treatment and maintenance necessary for each type. While the fourth chapter was entitled HIGHY WAY MAINTENANCE OPERATIONS: It reviewed the methods of maintenance and importance in highway project, the fifth chapter entitled: PAVEMENT MAINTENANCE MANAGEMENT SYSTEM: This chapter reviewed the most important global strategies in the management of pavement maintenance.

Download or read book Material Diversification in Pavement Management written by Omar Abdullah Swei and published by . This book was released on 2016 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement management systems are important tools that planning agencies depend upon for the effective maintenance of roadway systems. Although uncertainty is an inherent trait of these systems, the current approaches generally exclude its consideration from the analysis. Consequently, decision-makers disregard opportunities to embed sources of flexibility that may be advantageous to deploy if future conditions unfold differently from expectations. One potential source of flexibility available to planners is the incorporation of a broader range of paving materials and designs as part of their pavement preservation strategy. More specifically, this thesis hypothesizes that the inclusion of concrete-based maintenance alternatives by an agency can act as an insurance policy that protects planners at moments of spiraling costs for other paving commodities. To test the hypothesis set forth, this dissertation develops a stochastic simulation model that incorporates uncertainty as it relates to roadway deterioration and the future cost of maintenance actions. Its greedy heuristic algorithm addresses the inability of the current methods to (a) account for the heterogeneous (e.g., material, design, traffic) nature of pavements (b) scale for the type of real-world contexts that planners intend to use pavement management systems and/or (c) allow decisions to be made sequentially over time. The algorithm provides a high fidelity solution that generally falls within 2% of the global optimum for low-dimensional and deterministic problems. Subsequently, the model is applied to the Commonwealth of Virginia's interstate system, whose department of transportation (VDOT) traditionally only maintains their pavements with asphalt-based technologies, to minimize traffic-weighted roughness over a 50-year analysis period. A comparison of the solution for Virginia demonstrates that the DOT could achieve its desired performance goals, on average, at a cost reduction of 10% by incorporating multiple paving materials as part of their pavement management strategy. Results from the simulations indicate that much of the expected benefit from the concrete-based designs stems from their ability to mitigate poor performance at times where asphalt prices are significantly higher than expected. These results suggest that the benefit from incorporating a larger range of paving materials and designs by a planning agency could be much higher than agencies realize using the current deterministic approach for pavement management.

Download or read book Development of an Expert System for Sustainable Pavement Preservation Strategies ES2P2S written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement preservation is one of the most cost effective, environmentally and socially sustainable ways to manage deteriorating roadway systems when applied in a proper way. However, the current practice does not consider a long-term sustainability strategy and lacks the systematic approach of establishing the pavement preservation strategy considering sustainability. The principal objective of this study was to develop an expert system for the evaluation of various pavement strategies by incorporating economic, environmental and social sustainability aspects into decision-making. Sustainable pavement preservation was defined to be able to maintain the roadway in good condition (engineering), be cost effective (economic) and reduce energy consumption and global warming potential (GWP) emissions (environmental) and minimize the impact on water quality and on noise level (social) during the entire life cycle of the pavement. The cost effectiveness was measured by the ratio of user benefit to maintenance cost. The modified pavement Life-Cycle Assessment Tool for Environmental and Economic Effects (PaLATE) was used to assess the energy consumption and GWP. Water quality and noise impacts were quantified by in-depth studies and rated by an ordinal categorical values such as moderate or good. Based on the proposed framework of sustainability, a user-friendly expert system named the Expert System for Sustainable Pavement Preservation Strategy (ES2P2S) was developed using the Visual Basic Application (VBA). ES2P2S is capable of quantifying the impacts of multiple pavement preservation strategies in terms of economic, environmental and social perspectives. Multiple performance criteria analysis in ES2P2S also allows for the evaluation of the overall sustainability of pavement preservation strategies. The results of ES2P2S analysis of an actual project showed that micro surfacing could save 63.1% of the cost, consume only 11.1% of energy, and emit 11.2% of GWP compared with the thin hot mix asphalt (HMA) overlay. The expert system developed was able to successfully evaluate the overall sustainability of strategies. Thus, ES2P2S can be used to assist pavement preservation decision makers in understanding how the sustainability concept can be integrated into pavement preservation decision-making. It would result in maintaining a sound roadway system in a sustainable and economical way.

Download or read book A Probabilistic Approach to the Life cycle Cost Assessment of Preventive Maintenance Strategies on Flexible Pavements written by Charles Yu-Hsu Lee and published by . This book was released on 2010 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Obtaining Life Cycle Cost Effective Facilities in the Department of Defense written by Constantine Samaras and published by Rand Corporation. This book was released on 2013-03-05 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Defense (DoD) constructs, operates, and maintains a large number of facilities. DoD incorporates life-cycle cost-effective practices into many aspects of the military planning and construction processes. This report provides RAND's description and assessment of the process used to obtain life-cycle cost-effective facilities and how that affects DoD construction options and choices.

Download or read book Integrated Materials and Construction Practices for Concrete Pavement written by and published by . This book was released on 2006 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manual of integrated material and construction practices for concrete pavements.

Download or read book Developing Cost effective Pavement Maintenance and Rehabilitation Schedules written by Gulfam Jannat and published by . This book was released on 2017 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement Maintenance and Rehabilitation (M&R) are the most critical and expensive components of infrastructure asset management. Increasing traffic load, climate change and resource limitations for road maintenance accelerate pavement deterioration and eventually increase the need for future maintenance treatments. Consequently, pavement management programs are increasingly complex. The complexities are attributed to the precise assessment process of the overall pavement condition, realistic distress prediction and identification of cost-effective M&R schedules. Cost-effective road M&R practices are only possible when the evaluation of pavement condition is precise, pavement deterioration models are accurate, and resources must also be available at the right time. In a Pavement Management System (PMS), feasible M&R treatments are identified at the end of each branch of the decision trees. The decision trees are based on empirical relationships of the pavement performance index. Moreover, the predicted improvements in pavement performance for any treatment are set based on engineering experiences. Furthermore, the remaining service life of the pavement is estimated from the predicted deterioration of the overall condition. The future deterioration of the overall condition is estimated based on the initial condition and by considering only the effect of age notwithstanding the effect of traffic or materials. In assessing the overall condition of the pavement, this research overcomes the limitations of engineering judgment by incorporating a Mechanistic-Empirical (M-E) approach and estimating the improvement in performance for specific treatment types. It also considers the effect of traffic and materials on pavement performance to precisely predict its future deterioration and subsequent remaining service life. The objective of this research is to develop cost-effective pavement M&R schedules by incorporating (a) the M-E approach into the overall condition index and (b) the estimate of performance indices by considering the factors affecting pavement performance. The research objective will be accomplished by (i) incorporating variability analysis of existing performance evaluation practices and maintenance decisions of pavement, (ii) investigating estimates of existing performance indices, (iii) incorporating the M-E approach: sensitivity analysis, prediction, comparison and verification, (iv) estimating the deterioration model based on traffic characteristics and material types, and (v) identifying cost-effective M&R treatment options through Life Cycle Cost Analysis (LCCA). This study uses the pavement performance data of Ontario highways recorded in the Ministry of Transportation (MTO) pavement database. Precise assessment of pavement condition is a significant part in achieving the research goal. In a PMS, an accurate location reference system is necessary for managing pavement evaluations and maintenance. The length of the pavement section selected for evaluation may have a significant impact on the assessment irrespective of the type of performance indices. In Ontario, the highway section lengths range from 50m to 50,000m. For this reason, a variability in performance evaluation is investigated due to changes in section length. This study considers rut depth, Pavement Condition Index (PCI), and International Roughness Index (IRI) as performance indices. The distributions of these indices are compared by the following groupings of section lengths: 50m, 500m, 1,000m and 10,000m. The variations of performance assessments due to changing section lengths are investigated based on their impact on maintenance decisions. A Monte Carlo simulation is carried out by varying section lengths to estimate probabilities of maintenance work requirements. Results of such empirical investigations reveal that most of the longer sections are evaluated with low rut depth and the shorter sections are evaluated with high rut depth. This Monte Carlo simulation also reveals that 50m sections have a higher probability of maintenance requirements than 500m sections. The method of estimating performance indices is also investigated to identify the requirement of improvement in estimation of the prediction models. Generally, in a PMS, the prediction models of Key Performance Indicators (KPIs) are estimated by using the Ordinary Least Square (OLS) approach. However, the OLS approach can be inefficient if unobserved factors influencing individual KPIs are correlated with each other. For this reason, regression models for KPI predictions are estimated by using an approach called the 'Seemingly Unrelated Regression (SUR)' method. The M-E approach is used in this study to predict the future distresses by employing mechanistic-empirical models to analyze the impact of traffic, climate, materials and pavement structure. The Mechanistic-Empirical Pavement Design Guide (MEPDG) software uses a three-level hierarchical input to predict performance in terms of IRI, permanent deformation (rut depth), total cracking (reflective and alligator), asphalt concrete (AC) thermal fracture, AC bottom-up fatigue cracking and AC top-down fatigue cracking. However, these inputs have different levels of accuracy, which may have a significant impact on performance prediction. It would be ineffective to put effort for obtaining accuracy at Level 1 for all inputs. For this reason, a sensitivity analysis is carried out based on an experimental design to identify the effect of the accuracy level of inputs on the distresses. Following this, a local sensitivity analysis is carried out to identify the main effect of input variables. Interaction effects are also analyzed based on a random combination of the inputs. Since the deterioration of pavement is affected by site-specific traffic, local climate and properties of materials, these variables are carefully considered during the development of the pavement deterioration model to assess overall pavement conditions. The prediction model is developed by using a regression approach considering distresses of the M-E approach. In this study, the deterioration model is estimated for three groups of Annual Average Daily Traffic (AADT) to recognize their individual impact along with properties of materials. The time required for maintenance is also estimated for these categories. The investigations reveal that the expected time to maintenance for overlay with Dense Friction Course (DFC) and Superpave mixes is higher than other Hot Laid (HL) asphalt layers. This will help pavement designers and managers to make informed decisions. The probability of failure is also investigated by a probabilistic approach. With the increasing trend towards M&R of existing pavements, it is essential to make cost-effective use of the M&R budget. As such, identification of associated cost-effective M&R treatments is not always simple in most PMS. For this reason, a LCCA is carried out for alternate pavement treatments using the deterioration model based on traffic levels and material types. Comparing the Net Present Worth (NPW) value of alternative treatment options reveals that the overlay of pavement with DFC is the most cost-effective choice in the case of higher AADT. On the other hand, overlay with Hot Laid-1 (HL-1) is a cost-effective treatment option for highway sections with lower AADT. Although the results are related to the Ontario highway system, this can also be applied elsewhere with similar conditions. The outcome of the empirical investigations will result in the adoption of efficient road M&R programs for highways based on realistic performance predictions, which have significant impact on infrastructure asset management.

Download or read book Evaluation of the Cost Benefits of Continuous Pavement Preservation Design Strategies Versus Reconstruction written by and published by . This book was released on 2005 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued preservation of ADOT's pavements becomes an ever- increasing issue as non-renewable resources such as mineral aggregate become more and more difficult to obtain. Historically, ADOT's design philosophies have resulted in strategies that consist primarily of mill and fill and overlay. These pavement strategies are designed for approximately a ten year life, at which time, another similar treatment would be performed. Proper design philosophies evaluate life cycle costs to select the best available design option. However, the life cycle cost consists of both the construction cost and the user cost incurred by the public through delay, etc. While construction costs are easily defined, user costs are very difficult to quantify and often times may actually exceed the actual cost of the facility being constructed. Since the user costs are not directly borne by the agency, it becomes somewhat of a philosophical discussion as to what user costs should be considered. In recent times, mineral aggregate sources have become increasingly more difficult to obtain in Arizona. However, our current design philosophies and economics requires needing new materials approximately every ten years. There is a need to consider reconstruction of significant roadways so that they can obtain design lives, perhaps as many as thirty to forty years before rehabilitation or reconstruction.

Download or read book Life Cycle Cost based Pavement Preservation Treatment Design written by Dominique Pittenger and published by . This book was released on 2010 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: