Economic input-output life cycle assessment of concrete pavement containing recycled concrete aggregate

Shi, Xijun; Mukhopadhyay, Anol; Zollinger, Dan G; Grasley, Zachary

doi:10.1016/j.jclepro.2019.03.288

Cited by 120 publications

(60 citation statements)

References 11 publications

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“…With the advantages of high strength, considerable durability, and promising economy, concrete has been one of the most widely used building materials in civil engineering since the 20th century [1][2][3][4][5][6]. When optimizing mix proportion of concrete in many, if not most, engineering construction of China, the trial mix with highest strength is the chosen mix proportion [7][8][9][10][11][12]. Actually, the durability indexes of concrete deserve the same attention as the strength index, especially when the concrete is working in harsh environment [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Wang

Zhu

et al. 2021

Advances in Materials Science and Engineering

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In the seasonal frozen area of northeast China, cement concrete is usually in a working environment of cold climate and chlorine erosion coupling effect. In general, with a reasonable addition of air entraining agent (AEA) and multimineral admixtures such as fly ash, blast furnace slag, and silica fume, the durability of cement concrete under the effects of freeze-thaw and salt solution can be significantly improved in cold regions. However, due to several more compositions of cement concrete with multiple mineral admixtures, it would take excessive trial mixtures to select the desired mixture proportion based on the conventional method. This means a great deal of costs of raw materials and laboratory experimental time. In this paper, the experimental scheme of mixture proportion for air-entrained concrete with multimineral admixtures was designed based on the orthogonal experiment design method. Based on the compressive strength, rapid chloride permeability, and weight loss and relative dynamic elastic modulus after salt freeze-thaw cycles, the influence of different mineral admixtures and their dosages on the durability of concrete subjected to freeze-thaw in salt solution was analyzed. After that, based on genetic algorithm, an optimization of mixture proportion was proposed, which only requires less trial mixes and accessible optimization process. The test results indicated the superiority of air-entrained concrete with multimineral admixtures when serving in salt freeze-thaw environment. Eventually, it was also verified that the optimized concrete in this paper could achieve pleasurable durability performances under salt freeze-thaw cycles.

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Section: Introductionmentioning

confidence: 99%

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Wang

Zhu

et al. 2021

Advances in Materials Science and Engineering

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“…The trend of recycled concrete is becoming very common where material performance and properties are emphasized very largely although little consideration is given to the sustainability perspective. Keeping in view, Shi, et al [20]…”

Section: Pavement Materials Assessment With Lcamentioning

confidence: 98%

“…The assessment of material acquisition and transportation impact is the primary step of infrastructure projects, for which LCA was carried out by practitioners. Many of these assessments include comparative LCAs performed for comparisons of various construction material forms such as bitumen and cement pavement or virgin materials with recycled or secondary materials [19][20][21]. Many LCAs are carried out on the pavement alone, whereas some studies also examined the complete infrastructure, including the preparation of the site and the construction of road [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…Many LCAs are carried out on the pavement alone, whereas some studies also examined the complete infrastructure, including the preparation of the site and the construction of road [22][23][24]. Besides, attempts were made to define usual energy consumption and Carbon Dioxide (CO2) emissions of various types of regular roads [20,25,26]. Although, the environmental impact in infrastructure projects is assessed, though the alarming increase in the impact [27], as shown in Figure 1, need policies to overcome the increasing environmental impact or compensate for the harmful consequences.…”

Section: Introductionmentioning

confidence: 99%

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Life Cycle Assessment and Life Cycle Cost Analysis in Infrastructure Projects: A Systematic Review

Alaloul¹,

Altaf²,

Musarat³

et al. 2021

Preprint

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The comfort of human life depends on the quality, size, and reliability of the infrastructure projects. In the infrastructure systems, rapid growth is found, where the economic and sustainable impact has become a topic of significant concern for policies and government officials. To achieve con-straints of sustainable development, all the policies and actions over the infrastructure project's life cycle must be assessed. Decision-makers have adopted approaches for economic, social, and en-vironmental initiatives through Life Cycle Assessment (LCA) and Life Cycle Cost Analyses (LCCA) of infrastructure projects. The purpose of this review is to highlight the impact of per-forming LCA and LCCA in infrastructure projects. To achieve this goal, a systematic literature review methodology is adopted in which renowned databases, i.e., Web of Science, Science Direct, Emerald and Scopus were selected to extract the relevant literature. Using the PRISMA approach, 1251 publications were identified which were then filtered and 55 documents were included in the final review. In the extracted publications most, researchers were biased toward LCA and LCA individually, whereas few focused on integrated LCA and LCCA. The researchers assessed the costs and impact associated with the infrastructure project while there were less focused on the environmental cost. Besides this, techniques of economic, social, and environmental growth of infrastructure projects have been emphasized during the design phase because of substantial relations between infrastructure design and operation management. Moreover, a conceptual framework has been developed that will assist the decision-makers to consider the effects of LCA and LCCA on various aspects of the infrastructure project and how it impacts sustainability. In the last, a case study was performed to assess the developed framework with the incorporation of environmental impact cost.

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“…Recycling of construction waste as aggregate or supplementary cementitious materials is a promising way to resolve environmental burden [4]. Currently, the study on recycling of construction waste has been widely conducted, including the study on the recycled concrete aggregate [5,6], recycled asphalt pavement [7,8], recycled asphalt shingles [9], and etc. Specifically, concrete aggregate and improve its mechanical/durability performance.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of the Polyurethane-Based Composites Prepared with Recycled Polymer Concrete Aggregate

Zhao

Guo

et al. 2020

Materials

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Currently the investigation on recycled cement concrete aggregate has been widely conducted, while the understanding of the recycled polymer concrete aggregate is still limited. This study aims to fill this knowledge gap through the experimental investigation on mechanical and durability performance. Specifically, the remolded polyurethane stabilized Pisha sandstone was collected as the recycled polymer concrete aggregate. The remolded Pisha sandstone was then applied to re-prepare the polyurethane-based composites. After that, the mechanical performance of the prepared composites was first examined with unconfined and triaxial compressive tests. The results indicated that the Pisha sandstone reduces the composite’s compressive strength. The reduction is caused by the remained polyurethane material on the surface of the remolded aggregate, which reduces its bond strength with the new polyurethane material. Aiming at this issue, this study applied the ethylene-vinyl acetate (EVA) to enhance the bond performance between the polyurethane and remolded sandstone. The test results indicated both the unconfined and triaxle compressive strength of the polyurethane composites were enhanced with the added EVA content. Furthermore, the durability performance of the EVA-modified composites were examined through freeze-thaw and wet-dry cycle tests. The test results indicated the EVA could enhance the polyurethane composites’ resistance to both wet-dry and freeze-thaw cycles. Overall, the modification with EVA can compensate for the strength loss of polyurethane composites because of the applied remolded aggregate and enhance its sustainability.

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Economic input-output life cycle assessment of concrete pavement containing recycled concrete aggregate

Cited by 120 publications

References 11 publications

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Investigation on Durability Behaviour and Optimization of Concrete with Triple‐Admixtures Subjected to Freeze‐Thaw Cycles in Salt Solution

Life Cycle Assessment and Life Cycle Cost Analysis in Infrastructure Projects: A Systematic Review

Performance Evaluation of the Polyurethane-Based Composites Prepared with Recycled Polymer Concrete Aggregate

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