Life cycle impact comparison of different concrete floor slabs considering uncertainty and sensitivity analysis

Wang, Jingjing; Tingley, Danielle Densley; Mayfield, Martin; Wang, Yuanfeng

doi:10.1016/j.jclepro.2018.04.094

Cited by 50 publications

(26 citation statements)

References 39 publications

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“…e curing time of all components is not less than 12 h. In addition, the normal working hours of workers are eight hours a day. e optimization objective is to minimize the storage time and delivery delay time of finished components, as shown in (1).…”

Section: Verifying the Effectiveness Of Milpmentioning

confidence: 99%

“…Because of the drawbacks of conventional on-site construction approaches, the construction sector consumes approximately 40% of the total global energy, uses 40% of the global materials, and produces 50% of the global waste [1]. Many countries or regions, in recent years, have shown increasing interest in prefabrication as an "efficient" production strategy to meet their enormous construction demands [2].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Flow Shop Scheduling in Precast Concrete Component Production via Mixed‐Integer Linear Programming

Liu

et al. 2021

Advances in Civil Engineering

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The increasing number of prefabrication projects has increased the demand for precast concrete (PC) components. The production cost of PC components significantly affects the development of the precast industry and the progress of prefabrication projects. To reduce the production cost, both the delivery delay time and component storage time must be reduced. Flow-arrangement optimization is generally performed using the genetic algorithm. However, this method cannot always yield a perfect optimal solution. Moreover, the traditional optimization model does not consider the impact of the overtime hours of workers on the project costs. In this study, a mixed-integer linear programming (MILP) model was developed to optimize the production scheduling by minimizing the storage and delay times. The total delay time for the components was reduced by 55.3%, from 3.8 to 1.7 h, and the total storage time for finished components was reduced by 20.3%, from 6.4 to 5.1 h. Then, the use of the MILP model was extended to optimize the production scheduling by minimizing overtime. Finally, the feasibility and effectiveness of MILP were verified by comparing the results. The total overtime decreased by approximately 24.5%, from 11.5 to 9.3 h. It has been demonstrated that the proposed MILP model can achieve a better production sequence with less overtime. The findings of this research can be deployed in optimizing efficiency in the real-life scheduling of production sequence.

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Section: Verifying the Effectiveness Of Milpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of Flow Shop Scheduling in Precast Concrete Component Production via Mixed‐Integer Linear Programming

Liu

et al. 2021

Advances in Civil Engineering

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“…Global warming and air pollution become one of the environmental issues facing the world. According to the World Business Council for Sustainable Development (WBCSD) [1] it has been reported that the construction sector consumes about 40% of total global energy. Another impact of the concrete industry on the environment is related to waste production.…”

Section: Life Cycle Assessment (Lca) Analysis Of Concrete Slab Constrmentioning

confidence: 99%

“…According to Lopez-Mesa [1] the environmental impact of a building with precast concrete slabs is about 12.2% lower than cast plates in place. It can be concluded that concrete slabs have a greater influence on environmental pollution.…”

Section: Life Cycle Assessment (Lca) Analysis Of Concrete Slab Constrmentioning

confidence: 99%

Life Cycle Assessment (LCA) Analysis of Concrete Slab Construction For Estimating The Environmental Impact

2020

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Global warming and air pollution become one of the environmental issues facing the world. the construction sector consumes about 40% of total global energy. Many strategies have been adopted to improve the efficiency of building construction to reduce material consumption and carbon emissions. One way to find out the environmental impact and carbon emissions produced is with a Life Cycle Assessment (LCA). This study aims to predict the environmental impact of concrete slab construction in two-story dwellings using the Life Cycle Assessment (LCA) approach of the material used with the help of software, namely Simapro 9.0. The scope of the study is the cradle to the grave. The results of the SimaPro 9.0 concrete plate construction analysis, especially in global warming are 1.02, E+07 kg CO2 eq. The biggest contribution to the manufacture of concrete slabs is the casting process with a value of 1.00, E+07 kg CO2 eq.

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“…Some researchers established life cycle assessment (LCA) models of building construction from three aspects: environment [10], economy [11], and society [12]. For the construction of prefabricated buildings, the environmental impacts of three different concrete floor slabs have been quantified [13]. In order to improve social abilities of buildings, stakeholder analysis [14] was adopted in some projects.…”

Section: Introductionmentioning

confidence: 99%

Bibliometric and Social Network Analysis of Civil Engineering Sustainability Research from 2015 to 2019

Zhou

Wang

et al. 2020

Sustainability

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With the development of civil engineering sustainability, the scope of corresponding research covers a broader range. It is difficult for researchers to master the holistic situation of the study, leading to duplication and lag of their research. Therefore, this paper aims to present a state-of-the-art of the research of civil engineering sustainability by adopting two new methods (bibliometric and social network analysis) to review the literature of this field. It is concluded that the existing research takes engineering as the main subject to improve its sustainability through technologies. Current research mainly focuses on technological innovations and evaluations of environmental impacts in the fields of construction technology, energy consumption, material preparation, and design. The countries with the largest number of published articles are the United States and China. The Hong Kong Polytechnic University is the institution that has published more articles than others. Journal of Cleaner Production and Sustainability are the journals that have published the most articles. For the researchers, a professor of the University of Adelaide is the researcher who has published the most articles, and experts from South China University of Technology, Chongqing University, and University of Brighton are the main hubs among different researchers.

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Life cycle impact comparison of different concrete floor slabs considering uncertainty and sensitivity analysis

Cited by 50 publications

References 39 publications

Optimization of Flow Shop Scheduling in Precast Concrete Component Production via Mixed‐Integer Linear Programming

Optimization of Flow Shop Scheduling in Precast Concrete Component Production via Mixed‐Integer Linear Programming

Life Cycle Assessment (LCA) Analysis of Concrete Slab Construction For Estimating The Environmental Impact

Bibliometric and Social Network Analysis of Civil Engineering Sustainability Research from 2015 to 2019

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