Download or read book Life cycle Cost Model for Evaluating the Sustainability of Bridge Decks written by Richard F. Chandler and published by . This book was released on 2004 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Life cycle Cost Analysis written by Hugh Hawk and published by Transportation Research Board. This book was released on 2003 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM contains software, Guidance manual, User manual, and appendixes to report.

Download or read book Sustainability assessment of concrete bridge deck designs in coastal environments using neutrosophic criteria weights written by Ignacio J. Navarro and published by Infinite Study. This book was released on with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential infrastructures such as bridges are designed to provide a long-lasting and intergenerational functionality. In those cases, sustainability becomes of paramount importance when the infrastructure is exposed to aggressive environments, which can jeopardise their durability and lead to significant maintenance demands. The assessment of sustainability is however often complex and uncertain. The present study assesses the sustainability performance of 16 alternative designs of a concrete bridge deck in a coastal environment on the basis of a neutrosophic group analytic hierarchy process (AHP). The use of neutrosophic logic in the field of multi-criteria decision-making, as a generalisation of the widely used fuzzy logic, allows for a proper capture of the vagueness and uncertainties of the judgements emitted by the decision-makers. TOPSIS technique is then used to aggregate the different sustainability criteria. From the results, it is derived that only the simultaneous consideration of the economic, environmental and social life cycle impacts of a design shall lead to adequate sustainable designs. Choices made based on the optimality of a design in only some of the sustainability pillars will lead to erroneous conclusions. The use of concrete with silica fume has resulted in a sustainability performance of 46.3% better than conventional concrete designs.

Download or read book A Dynamic Life Cycle Assessment Tool for Comparing Bridge Deck Designs written by Alissa Kendall and published by . This book was released on 2004 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO2 Emission based prioritization of bridge maintenance projects using neutrosophic fuzzy sets based decision making approach written by Ilgin Gokasar and published by Infinite Study. This book was released on with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is one of the most challenging problems for the world, which leads researchers to study on the decrease of its impact to the environment at several disciplines. One of the most adverse effects on environment can be observed in transportation area. Hence, in this paper, the impact of bridge maintenance on the environment is inquired in the bridge maintenance prioritization perspective. The aim of this paper is to rank the bridge maintenance projects using type-2 neutrosophic number (T2NN) based fuzzy WASPAS (Weighted Aggregated Sum Product Assessment) and TOPSIS (Technique For Order Preference By Similarity To An Ideal Solution) to test five alternative bridges, where a critical environmental criterion is introduced in this model, which addresses to additional CO2 emission because of truck detours in the event of a bridge closures. The applicability of the proposed model is demonstrated in a case study in Turkey. The evaluation findings show that the ranking results are robust and the CO2 emission criterion is found to be the dominant criterion in the multicriteria decision-making model proposed in this paper.

Download or read book Fiber Reinforced Polymer FRP Composites for Infrastructure Applications written by Ravi Jain and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines current issues of fiber reinforced polymer (FRP) composites in civil infrastructure. The contents of this book are divided into two parts. The first part engages topics related to durability and service life of FRP composites and how they contribute to sustainability. The second part highlights implementation and applications of the FRP composites with an emphasis on bridge structures. An introductory chapter provides an overview of FRP composites and its role in a sustainable built environment highlighting the issues of durability and service life followed by a current review of sustainability in infrastructure design.​

Download or read book Advances in Life cycle Cost Analysis and Design of Civil Infrastructure Systems written by and published by . This book was released on 2005 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimal Investment Decision making for Highway Transportation Asset Management Under Risk and Uncertainty written by Zongzhi Li and published by . This book was released on 2007 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Service Life Design written by Elizabeth Rose Bales and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High costs and traffic disruption associated with the deterioration of reinforced concrete bridge decks because of corrosion have sparked renewed interest in service life design. Reinforced concrete bridge decks are exposed to chlorides from deicing salts; when the chlorides reach the steel reinforcement, they initiate corrosion. This study supports the adoption of the methodology described in fib Bulletin 34, Model Code for Service Life Design, for reinforced concrete bridge decks in Virginia. Concrete mixture properties and environmental exposure conditions were characterized. Values particular to regions within Virginia and suggested default values were identified and organized in a database to support the development of service life design guidelines. The predicted service life for eight bridge decks using low-cracking concrete and corrosion-resistant reinforcement (VDOT Reinforcement Class I, MMFX, ASTM 1035) was evaluated. The service life model was also implemented in a life-cycle cost analysis for a case study bridge, which found superior reliability of corrosion-resistant reinforcement from a life-cycle perspective. In addition to supporting the implementation of service life design, several investigations identified key assumptions and variables in the service life model and identified critical areas for future characterization. The partial differential equation for apparent chloride diffusion was solved with both an approximate analytical approach and a numerical approach. Delays in the application of deicing salt were investigated using the numerical approach, and a ramp-type function for surface chloride concentration was explored using the analytical approach. Aging coefficients based on curing were also considered. A sensitivity analysis identified the aging coefficient and the surface chloride concentration as the most critical variables. The study concluded that sufficient data are available to implement the fib Model Code for Service Life Design, but that caution in interpreting results is warranted because of the high uncertainty associated with the most critical variables. According to the results of the service life analyses, the regional climatic variability and differences in mix design across Virginia indicate that a "one-size-fits-all" approach to bridge deck specifications may not be appropriate. The use of corrosion-resistant steel and low-cracking concrete mixtures can provide a substantial (greater than 100 years) bridge deck service life

Download or read book Sustainable Steel Buildings written by Milan Veljkovic and published by John Wiley & Sons. This book was released on 2016-08-16 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable Steel Buildings reviews steel and its potential as a sustainable building material and shows how steel can be used to deliver buildings and structures with a high level of sustainability. The book's main focus is on the advantages and disadvantages of steel and how those characteristics can be used under a range of international certification systems (DGNB, LEED, BREEAM, openhouse etc).

Download or read book Life Cycle Sustainability Assessment For Multi Criteria Decision Making In Bridge Design A Review written by Ignacio Javier Navarro and published by Infinite Study. This book was released on with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable design of infrastructures has become a major matter of study since the recent establishment of the Agenda 2030. This paper provides a systematic literature review on the use of multi-criteria decision making techniques used so far for the sustainable design of bridges. Special attention is put as well on how the reviewed studies assess the sustainable performance of bridge designs along their life cycle from the economic, the environmental and the social perspective. Although SAW and AHP are recurrently used in the sustainable assessment of bridges, the analysis of the most recent articles show that the application of TOPSIS and PROMETHEE techniques are gaining increasing relevance for such purpose. Most of the studies focus on the research of the construction and the maintenance stage of bridges. However, a need for further analysis is identified when it comes to the assessment of the impacts resulting from the End of Life cycle stage of bridges from a sustainable point of view. The use of intuitionistic and neutrosophic logic have been detected as emerging alternatives to the fuzzy approach of decision making problems.

Download or read book Life Cycle Costing written by Subramanian Senthilkannan Muthu and published by Springer Nature. This book was released on 2023-10-09 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life Cycle Costing (LCC) is a well-known and popular method to evaluate the economic sustainability, which as the term implies is structured on the life cycle of a product or process. LCC is a method primarily consisting of estimating the total cost of a product, taking into account the whole life cycle of the product as well as the direct and external costs. It is one of the important methods and tools under the sustainability umbrella. This book describes the concept of LCC and offers several interesting case studies.

Download or read book Sustainability Costing to Aid Bridge Management Decision Making written by Arsha Tabrizi and published by . This book was released on 2016 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many bridges in this country have reached their intended service-life, and are deemed in need of maintenance, rehabilitation, and replacement services. A life cycle inventory collects relevant information about sustainability impacts that can be used to assess the effect of decisions on the economy, environment and society. Sustainability is important because it considers impacts that are externalized from traditional costing systems; so the impacts result in costs but bridge owners do not measure or pay those costs directly. Bridge management sustainability assessment can be thought of as impacting owners, road users, and the environment. As funding for bridge maintenance, rehabilitation, and replacement services dwindle there are greater incentives for sustainable decision making. The development of inventories that assist practitioners in exercising sustainable bridge management techniques are increasingly becoming relevant in bridge management systems (BMS). The bidding process for bridge repair projects illustrates how including sustainable assessment into decision-making can improve upon BMS. Typically, A+B bidding considers both owner costs per item (A) and the costs incurred to the road users as a result of the time to complete the project (B); monetary values are assigned to the time necessary to complete the project and the bidder with the lowest total costs (A+B) is rewarded. The manner at which time is costed is dependent on the agency and can consider road user and vehicle operating costs. However, during traditions construction operations. the costs incurred to society, specifically road users, through travel delays and increased vehicle operation costs are being disregarded. In addition, the environmental costs to human health from pollutant emissions are ignored. These impacts can be greater from specific maintenance, rehabilitation, and replacement service operations and differ from normal traffic patterns. By incorporating the costs incurred to users and the environment, both efficient and sustainable practices can be incentivized, therefore catalyzing contractors to further develop detailed and sustainable plans when bidding for and carrying out a project. For this study, we investigated various maintenance, rehabilitation and replacement actions that are pivotal to the structural health of a bridge. As a case study, the impacts of different deck expansion joint rehabilitation/replacement options measured sustainability impacts in the units of dollars. Thus, costs are associated with impacts incurred by the owner, user, and environment and are summed to provide a total cost to score the overall efficiency and sustainability of each option. Employing the A+B+C costing method, the options with the lowest cost prove to be the most efficient and sustainable. A full-depth replacement of an abutment expansion joint, on a particular bridge, was the primary focus of the case-study conducted. The joint's headers were fully removed as were the armoring and in-place sealant. Using the A+B+C costing method, the most sustainable joint maintenance program, for the particular abutment expansion joint, was determined for the bridge's remaining service life. It was found that the most cost effective joint maintenance program includes a full depth removal of the headers in 2015, and a partial depth replacement of the headers with Class A concrete in 2027. From these findings, the best option is an open compression seal implemented after the full depth replacement in 2015, and replacing the open compression seal with a strip seal in 2030. The lowest cost to the owner, users, and the environment for joint maintenance and replacement for the remaining life of the bridge is approximately $188,000.00. The most expensive joint maintenance program includes a full depth removal of the headers in 2015, and 7 partial depth replacement of the headers with elastomeric concrete; the headers replacement schedule would be supplemented with a new strip seal implemented in 2015 and open compressions seals implemented in 2030 and 2036. The most expensive option would cost approximately $285,000.00, approximately 52% more expensive than the optimized program. Within each program considered the owner costs ranged between 10-15% of the total costs, the societal costs ranged between 80-90% of the total costs while the environmental costs ranged between 2.6 and 2.7% of the total costs.

Download or read book Green Building with Concrete written by Gajanan M. Sabnis and published by CRC Press. This book was released on 2015-06-16 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrates the Global Relevance of SustainabilityApplicable to roads, bridges, and other elements of the infrastructure, Green Building with Concrete: Sustainable Design and Construction, Second Edition provides an overview of all available information on the role of concrete in green building. A handbook offering viewpoints from worldwide experts

Download or read book Structures and Infrastructure Systems written by Dan M. Frangopol and published by Routledge. This book was released on 2019-12-18 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our knowledge to model, design, analyse, maintain, manage and predict the life-cycle performance of infrastructure systems is continually growing. However, the complexity of these systems continues to increase and an integrated approach is necessary to understand the effect of technological, environmental, economic, social, and political interactions on the life-cycle performance of engineering infrastructure. In order to accomplish this, methods have to be developed to systematically analyse structure and infrastructure systems, and models have to be formulated for evaluating and comparing the risks and benefits associated with various alternatives. Civil engineers must maximize the life-cycle benefits of these systems to serve the needs of our society by selecting the best balance of the safety, economy, resilience and sustainability requirements despite imperfect information and knowledge. Within the context of this book, the necessary concepts are introduced and illustrated with applications to civil and marine structures. This book is intended for an audience of researchers and practitioners world‐wide with a background in civil and marine engineering, as well as people working in infrastructure maintenance, management, cost and optimization analysis. The chapters originally published as articles in Structure and Infrastructure Engineering.

Download or read book Rethinking Bridge Deck Longevity and Maintenance with Portland Cement Polymer Concrete written by Andrew P. Agosto and published by . This book was released on 2008 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge deck deterioration in the northern Midwest creates significant costs to state Departments of Transportation (DOT's) in the region. The fundamental cause of the problem is low tensile strength and water permeable reinforced concrete resulting in deck cracking and ultimately reinforcing bar corrosion. Portland Cement Polymer Concrete (PCPC) combined with a design approach tailored to its advantages could virtually eliminate early deck deterioration and the associated costs providing an alternative asset management path for bridge decks. Bridge decks would no longer have to be removed from their substructure every fifteen years and replaced. The results would be higher quality, longer lasting bridge decks with lower life cycle costs. This project will demonstrate the feasibility and methodology of such a strategy. This project will develop a strategy that combines innovative concrete materials, novel design and cost analysis that enhances the longevity and reduces the life cycle cost of highway bridge decks. The project is expected to show significant life-cycle cost advantages to using a high performance bridge deck material.

Download or read book Life Cycle of Engineering Systems Emphasis on Sustainable Civil Infrastructure written by Jaap Bakker and published by CRC Press. This book was released on 2016-11-18 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at IALCCE2016, the fifth International Symposium on Life-Cycle Civil Engineering (IALCCE2016), to be held in Delft, The Netherlands, October 16-19, 2016. It consists of a book of extended abstracts and a DVD with full papers including the Fazlur R. Khan lecture, keynote lectures, and technical papers from all over the world. All major aspects of life-cycle engineering are addressed, with special focus on structural damage processes, life-cycle design, inspection, monitoring, assessment, maintenance and rehabilitation, life-cycle cost of structures and infrastructures, life-cycle performance of special structures, and life-cycle oriented computational tools. The aim of the editors is to provide a valuable source for anyone interested in life-cycle of civil infrastructure systems, including students, researchers and practitioners from all areas of engineering and industry.