Environmental Impacts of Reinforced Concrete Buildings: Comparing Common and Sustainable Materials: A Case Study
Abstract
:1. Introduction
2. Methodology
2.1. LCA Method
- Goal and scope definition: The first step is to clearly define the goals and scope of the LCA study. This includes identifying the product or service to be evaluated, the environmental impacts to be considered, and the boundaries of the study.
- Inventory analysis: The second step is to gather data on the inputs (e.g., materials, energy, water) and outputs (e.g., emissions, waste) of the product or service throughout its lifecycle. This information is used to create a detailed inventory of the environmental impacts of the product or service.
- Impact assessment: The third step is to evaluate the environmental impacts of the product or service by comparing the inventory data to impact categories (e.g., global warming, acidification, eutrophication) and calculating the overall impact of the product or service.
- Interpretation and reporting: The final step is to interpret the results of the LCA and communicate the findings to stakeholders. The results can be used to make informed decisions about the environmental impact of construction activities and to identify opportunities for improvement.
- (a)
- Cradle-to-grave LCA: This is the traditional type of LCA and considers all stages of a product’s life cycle, from the extraction of raw materials to the disposal of the final product.
- (b)
- Cradle-to-gate LCA: This type of LCA focuses on the environmental impact of a product from the extraction of raw materials to the end of the manufacturing process, but not including the use or disposal phase.
- (c)
- Gateway-to-grave LCA: This is the reverse of the cradle-to-gate LCA, and it considers the environmental impact of a product from the point of distribution to its end-of-life disposal.
2.2. Carbon Footprint Analysis (CFA)
- Define the scope of the analysis: Decide what activities and processes will be included in the analysis. This could be an entire organization, a specific product, a single event, or any other defined boundary.
- Collect data: Gather information on the emissions generated by the activities and processes within the defined scope. These data may include information on energy use, transportation, waste generation, and other relevant factors.
- Identify the sources of emissions: Determine which activities and processes are responsible for the majority of emissions and prioritize them for further analysis.
- Calculate emissions: Use the data collected to calculate the total emissions generated by the defined scope, taking into account the type and quantity of each emission source.
- Evaluate the results: Analyze the results of the carbon footprint calculation and interpret the findings. This could involve comparing the results to industry benchmarks, identifying areas for improvement, or setting emissions reduction targets.
- Communicate the results: Share the results of the analysis with relevant stakeholders, such as employees, customers, investors, and regulators.
- Take action: Based on the results of the analysis, implement changes and initiatives aimed at reducing emissions and improving sustainability. This could include energy efficiency measures, switching to renewable energy sources, or changing business processes and practices.
- Monitor and review: Regularly monitor and review the carbon footprint to track progress and ensure that emissions reduction targets are being met.
3. Models Description
3.1. The Building with Common Materials
3.2. The Building with Sustainable Materials
4. Results and Discussion
4.1. The Building with Common Materials
4.2. The Building with Sustainable Materials
4.3. Comparison between the Pollution of Both Buildings
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Material | Unit | Production | Distance (km) to Site |
---|---|---|---|
Concrete | kg | 734,400 | 50 |
Steel and Rebar | kg | 32,050 | 420 |
Hollow clay brick | kg | 177,560 | 40 |
Light concrete | kg | 80,420 | 45 |
Block concrete | kg | 64,440 | 30 |
Facing brick | kg | 34,900 | 72 |
Marble | kg | 24,640 | 415 |
Whiting | kg | 129,690 | 32 |
Block | kg | 64,430 | 36 |
Mortar | kg | 120,620 | 40 |
Tile | kg | 30,320 | 621 |
Mosaic | kg | 9420 | 140 |
Door frame (Steel) | kg | 1830 | 70 |
Windows (Aluminium) | kg | 2040 | 65 |
Glass | kg | 5790 | 150 |
Wood | kg | 2760 | 50 |
Metal structures and Equipment | kWh | 12,480 | - |
Others (food, …) | kg | 4080 | 10 |
Materials | Unit | Production | Distance (km) to Site |
---|---|---|---|
Concrete | kg | 731,000 | 50 |
Steel and Rebar | kg | 31,100 | 420 |
Recycled glass tile | kg | 18,090 | 140 |
Mortar | kg | 6590 | 40 |
Plywood | kg | 26,600 | 621 |
Eco-Sandwich wall panel | kg | 3000 | 72 |
Cork | kg | 32,800 | 40 |
Kenaf | kg | 1550 | 32 |
EPS block | kg | 1050 | 50 |
Door and Windows (wood) | kg | 3110 | 65 |
Glass | kg | 5790 | 150 |
Metal structures and Equipment | kWh | 6240 | - |
Others (food, …) | kg | 4090 | 10 |
Impact Category | Unit | Building with Common Materials | Building with Sustainable Materials |
---|---|---|---|
Abiotic depletion | kg Sb eq | 2204.177382 | 1632.37247 |
Acidification | kg SO2 eq | 1693.811477 | 1421.462042 |
Eutrophication | kg PO4--- eq | 466.473465 | 370.1418538 |
Ozone layer depletion (ODP) | kg CFC-11 eq | 0.021513317 | 0.012156802 |
Human toxicity | kg 1,4-DB eq | 273,269.7749 | 206,862.4723 |
Fresh water aquatic ecotox. | kg 1,4-DB eq | 104,210.7088 | 83,439.50386 |
Marine aquatic ecotoxicity | kg 1,4-DB eq | 172,281,668.6 | 132,712,548.3 |
Terrestrial ecotoxicity | kg 1,4-DB eq | 1684.194935 | 1449.112661 |
Photochemical oxidation | kg C2H4 eq | 90.63623204 | 103.9561486 |
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Chamasemani, N.F.; Kelishadi, M.; Mostafaei, H.; Najvani, M.A.D.; Mashayekhi, M. Environmental Impacts of Reinforced Concrete Buildings: Comparing Common and Sustainable Materials: A Case Study. Constr. Mater. 2024, 4, 1-15. https://doi.org/10.3390/constrmater4010001
Chamasemani NF, Kelishadi M, Mostafaei H, Najvani MAD, Mashayekhi M. Environmental Impacts of Reinforced Concrete Buildings: Comparing Common and Sustainable Materials: A Case Study. Construction Materials. 2024; 4(1):1-15. https://doi.org/10.3390/constrmater4010001
Chicago/Turabian StyleChamasemani, Niyousha Fallah, Massih Kelishadi, Hasan Mostafaei, Mohammad Amin Dehghani Najvani, and Mohammadreza Mashayekhi. 2024. "Environmental Impacts of Reinforced Concrete Buildings: Comparing Common and Sustainable Materials: A Case Study" Construction Materials 4, no. 1: 1-15. https://doi.org/10.3390/constrmater4010001