A Comparative Life Cycle Assessment (LCA) of Warm Mix Asphalt (WMA) and Hot Mix Asphalt (HMA) Pavement: A Case Study in China

Ma, Hui; Zhang, Zhigang; Zhao, Xing; Wu, Shuang

doi:10.1155/2019/9391857

Cited by 31 publications

(29 citation statements)

References 19 publications

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“…Ma et al [11] compared the resource consumptions and GHG emissions of both warm mix asphalt (WMA) and HMA using the LCA method. They found that these two materials consume similar amounts of resources; however, due to the lower mixing temperature, the WMA had less fuel burning and CO 2 emissions than the HMA.…”

Section: Current State Of the Environmental And Economic Impact Assesmentioning

confidence: 99%

“…A and B are considered to be the best alternatives in terms of EVP and ECP, respectively. The OP is defined as the area of the EI and CI for each alternative, as presented in Equation (11). It is defined to the environmental and cost impact index (ECI).…”

Section: Implementing the Improved Overall Performance Assessment Modelmentioning

confidence: 99%

“…As presented in Figure 6, the IBEES method performs the proposed ECI calculation process for this purpose. The calculation is done by substituting the EI and CI in Equation (11) with the corresponding variables obtained using Equations (9) and (10), respectively. Each ECI is 23.4 and 25.8 points when the HMA and PCC pavements are employed, respectively, to the case projects.…”

Section: Comparative Analysis Of the Overall Performance Using The Tomentioning

confidence: 99%

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Environmental and Cost Impact Assessment of Pavement Materials Using IBEES Method

2021

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For road pavements, hot-mix asphalt (HMA) and Portland cement concrete (PCC) are the materials most commonly used. In the selection of one of these materials, their economic performance and environmental performance are evaluated to determine which material exhibits excellent overall performance. However, no overall performance assessment exists in the construction community attributed to the lack of method providing easy-to-use and informative criteria for the decision-making process. Thus, in this paper, a new method that enables a comprehensive overall performance assessment is proposed, which is called Improved Building for Environmental and Economic Sustainability. After an eco-economic life-cycle assessment is performed, along with environmental performance and economic performance evaluation, the best-fit pavement material can be selected. This method has proven that the use of HMA for road pavements reduces the environmental impact by 27.1%P (i.e., percentage point), whereas the use of PCC reduces cost by 19.7%P. The existing Building for Environmental and Economic Sustainability (BEES) method shows that the performances of both HMA and PCC were over-assessed by 4.6%P and 7.4%P, respectively, since the environmental performance and economic performance cannot be computed quantitatively by incorporating the environmental and cost impact index into existing BEES model, the Improved BEES method accurately projects environmental performance and economic performance attained through the application of the environmental and cost impact index, hence, encouraging more informed decision. This method facilitates in articulating a quality decision making through the consideration of both the environmental performance and economic performance, hence reducing unnecessary costs generated from the trial and error due to the use of the existing method. Moreover, it promotes the development of a sustainable construction technology.

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Section: Current State Of the Environmental And Economic Impact Assesmentioning

confidence: 99%

Section: Implementing the Improved Overall Performance Assessment Modelmentioning

confidence: 99%

Section: Comparative Analysis Of the Overall Performance Using The Tomentioning

confidence: 99%

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Environmental and Cost Impact Assessment of Pavement Materials Using IBEES Method

2021

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“…Due to the very large amounts of resources used, road construction and maintenance have a major impact on the environment. Consequently, current production technologies need to be properly studied to identify and quantify the environmental impact on the life cycle of the road structure [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Environmental Impact Assessment of Different Warm Mix Asphalts

et al. 2021

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Within the last decade, much attention has been focused on determining viable techniques for producing sustainable asphalt mixtures and minimizing fuel use and greenhouse gas emissions. Thus, warm mix asphalt (WMA) has become a topic of significant interest among road specialists as it offers a potential solution for reducing the environmental impact of the asphalt mixtures due to the decreased temperatures they require for mixing and compaction compared to hot mix asphalt (HMA). The present study is focused on the Life Cycle Assessment (LCA), according to a “Cradle-to-Gate” approach, of hot mix asphalt and warm mix asphalt prepared with locally available materials and different warm mix additives such as organic additives, chemical additive, and synthetic zeolite. For the analysis of the environmental impact of the warm mix asphalts was used a dedicated software for modeling and evaluating the LCA. The WMA prepared with chemical additive or organic additive led to a decrease of the environmental impact, in the production phase, compared to HMA. The study reveals that the raw materials extraction has the greatest impact on the environment in all studied cases, followed by the actual production phase of the asphalt mixture. For WMA produced with additives there was a decrease in the global impact on the environment compared to HMA.

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“…In this standard, the LCA framework is divided into four stages -goal and scope definition; Life Cycle Inventory (LCI), Life Cycle Impact Assessment (LCIA), and interpretation as the main units of the LCI are GHG (CO 2 , NO 2 ), non-renewable resources (oil, mineral materials), materials (raw materials, recycled asphalt, recycled road pavement). Performing an analysis highlights the advantages of using technologies such as WARMIX (Ma, Zhang, Zhao, & Wu, 2019), thin asphalt layers (Riekstins, Haritonovs, Abolins, Straupe, & Tihonovs, 2019), reclaimed asphalt (Chen & Wang, 2018). Likewise, the use of various by-products in road construction as ash (Vestin, Arm, Nordmark, Lagerkvist, Hallgren, & Lind, 2012), cement bypass dust (Ramadan & Ashteyat, 2009), red mud (Lima, Thives, & Haritonovs, 2017).…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Cost Analysis and Life Cycle Assessment for Road Pavement Materials and Reconstruction Technologies

Riekstins

Haritonovs

Straupe

2020

BJRBE

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With limited funding and a desire to reduce environmental impact, there is a lot of pressure on road Authorities to develop decision making policy to manage better, build and maintain the road network sustainability. One of the solutions is to use various life cycle analyses. Numerous tools are available for different analyses, but they usually evaluate the construction from one perspective (economical, environmental, or social). Therefore, it was decided to develop a tool, which combines economic (Life Cycle Cost Analysis) and environmental (Life Cycle Assessment) analyses. The given study presents the methodology of the self-developed calculation program, which compare full-depth road constructions. Paper also shows shortcomings when calculation does not include all life cycle processes. In this study, five different road pavement constructions and reconstruction plans were compared. The difference between these pavements was in the layer thickness, recycled asphalt content in asphalt layers and the use of cement or fly ash in the road base layers. The results showed that the full depth reclamation technology in comparison to the full-depth removal and replacement reduce emissions by 60% and costs by 50%.

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A Comparative Life Cycle Assessment (LCA) of Warm Mix Asphalt (WMA) and Hot Mix Asphalt (HMA) Pavement: A Case Study in China

Cited by 31 publications

References 19 publications

Environmental and Cost Impact Assessment of Pavement Materials Using IBEES Method

Environmental and Cost Impact Assessment of Pavement Materials Using IBEES Method

Environmental Impact Assessment of Different Warm Mix Asphalts

Life Cycle Cost Analysis and Life Cycle Assessment for Road Pavement Materials and Reconstruction Technologies

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