Life cycle assessment of roads: Exploring research trends and harmonization challenges

Hoxha, Endrit; Vignisdóttir, Hrefna Rún; Barbieri, Diego Maria; Wang, Feiliang; Bohne, Rolf André; Kristensen, Terje; Passer, Alexander

doi:10.1016/j.scitotenv.2020.143506

Cited by 46 publications

(29 citation statements)

References 57 publications

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“…e test consists in subjecting the road base layer to a pulse load applied via a steel plate; a geophone records the speed of the plate movement. e LWD is made of the following parts as illustrated in Figure 6: loading mechanism handle (1), release mechanism (2), bubble level (3), guide rod allowing the falling weight to drop from a distance of 72 cm (4), 10-kg drop-weight (5), transportation lock pin (6), and elastic element with prestressed disc springs (7). e load plate is 30 cm in diameter and comprises a cap with a sensor (8), a sensor socket to connect the measuring cable (9), and a load plate carrying handles (10).…”

Section: Test Sections and Testmentioning

confidence: 99%

“…is solution would engender remarkable advantages from several points of view and curtail the consumption of natural resources and related pollutant emissions [3][4][5][6][7]. In addition, the importance of sustainable and environmentally friendly solutions is becoming more and more significant in the world as well as in Norway as the country pursues climate neutrality [8].…”

Section: Introductionmentioning

confidence: 99%

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Organosilane and Lignosulfonate Stabilization of Roads Unbound: Performance during a Two‐Year Time Span

Barbieri

Lou

Chen

et al. 2021

Advances in Civil Engineering

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The construction of the new Norwegian E39 highway comprises the excavation of extended tunnelling systems, which lead to a tremendous amount of blasted rocks. Among others, a sustainable cost-benefit application of these resources is represented by their local use as construction material in the unbound layers of the roads. Two types of nontraditional additives are investigated to improve the mechanical properties of aggregates; this is particularly useful for those rocks that do not fulfil the design requirements in their natural status. This work focuses on the field application of two innovative stabilizing technologies based on organosilane and lignosulfonate. The performance of these additive agents is characterized by considering three typical road base layer sections built on purpose according to real practice and added with water (no treatment), organosilane, and lignosulfonate. The test sections are subjected to climatic actions only as neither traffic nor surface courses are applied. With the investigation covering two years, the layers’ stiffness, deformation, and resistance to penetration are evaluated by employing a light-weight deflectometer and dynamic cone penetrometer. Both organosilane and lignosulfonate significantly enhance the mechanical properties of the treated base layers.

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Section: Test Sections and Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Organosilane and Lignosulfonate Stabilization of Roads Unbound: Performance during a Two‐Year Time Span

Barbieri

Lou

Chen

et al. 2021

Advances in Civil Engineering

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“…However, due to the complexity and uncertainty of the speed change, as well as acceleration/deceleration of vehicles travelling through the highway maintenance work zone, the work zone related user CO 2 emissions are generally assumed which have little contribution to the total CO 2 emissions for a highway maintenance, especially for the maintenance that happened at night with the lower traffic volume [17]. Consequently, the part of work zone is rarely taken into the system boundary of LCA on highways [18]. But there still are strong supporters who stress the importance of the traffic delay on total LCA results and tried to develop the computation method of user CO 2 emissions.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Work Zone Management on User Carbon Dioxide Emissions in Life Cycle Assessment on Highway Pavement Maintenance

Liu

Zhu

Wang

et al. 2022

Advances in Meteorology

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The higher contribution of traffic delay to environmental impacts is urging the highway agencies to take work zone management into the maintenance schemes decision-making. Aiming to understand the role of work zone management in user CO2 emissions reduction, this paper firstly developed a practical methodological framework of traffic delay-related CO2 emissions caused by highway maintenance based on a popular life cycle user cost analysis approach in regard of the microscopic vehicle operation analysis. The method was applied in an actual freeway flexible pavement with 15-year design life in Shaanxi Province, China, covering three types of preventive maintenance, correction maintenance, and rehabilitation. In addition, the impacts of key inputs of proposed method on work zone user CO2 emissions results were checked. The results show that traffic delay attributes to 29.4% of total CO2 emissions of the life cycle of highway pavement maintenance, and 51.8% of work zone user CO2 emissions result from preventive maintenance, especially from micro vehicle operations including speed change and queue near work zone (62% of total work zone user CO2 emissions). The work zone management alternative strategies related to less traffic volume or higher highway capacity including vehicle type limitation and the limited work zone speed have an advantage in reducing the work zone CO2 emissions over changing work zone length or work zone timing. The findings in this paper may present a useful tool and reference for robustly supporting the decision-making on highway maintenance carbon mitigation in work zone traffic.

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“…Various activities such as raw material extraction and its transportation, production of materials, application of pavement materials is often incorporating in the construction phase. Many studies such as Pavement Embodied Carbon Tool (PECT), Intergovernmental Panel on Climate Change (IPCC), Functional Unit (FU) have highlighted various difficulties for obtaining various data during the life cycle assessment of roads [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of asphalt pavement construction on the environment of Ethiopia

Rath¹

2022

Res. Eng. Struct. Mater.

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Nowadays road construction is rapidly increasing on-demand to meet several medium and long terms development programs. A huge amount of natural resources, types of machinery and fuels are used in road construction. Using material resources and fuel an efficient manner, reducing in emission of greenhouse gases and controlling various impacts on the environment are important tasks in the road construction industry. In the present research, several environmental impacts related to the construction of asphalt paved highways in Ethiopia have been determined using the Life Cycle Assessment Approach for common pavement materials and construction activities. A deep focus has been given towards the extraction and processing of sand and gravel for preparation of base and sub-base; transportation of these input raw materials; consumption of fuels by various road construction machinery; direct or indirect emissions of carbon dioxide and other pollutants to atmosphere etc. Various suitable methods have been used to calculate the impacts of raw materials, fuel and machinery on various categories such as global warming potential, ozone depletion potential, terrestrial acidification potential, freshwater eutrophication, freshwater ecotoxicity etc. From the investigation, it has been suggested to use recycled materials for substituting gravel as base or sub-base materials and biodiesel for substituting diesel in the transportation trucks and dumpers. These types of new recycled materials may greatly help in assisting the evaluation of sustainable pavement construction. The present case study may help for potential changes in asphalt pavement construction to improve environmental sustainability.

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Life cycle assessment of roads: Exploring research trends and harmonization challenges

Cited by 46 publications

References 57 publications

Organosilane and Lignosulfonate Stabilization of Roads Unbound: Performance during a Two‐Year Time Span

Organosilane and Lignosulfonate Stabilization of Roads Unbound: Performance during a Two‐Year Time Span

The Influence of Work Zone Management on User Carbon Dioxide Emissions in Life Cycle Assessment on Highway Pavement Maintenance

Effect of asphalt pavement construction on the environment of Ethiopia

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