Short answer
Prioritize the use of low-carbon and recycled materials in the design and construction of transportation infrastructure, and plan for the end-of-life management of these materials.
- Field
- Sustainability
- Source
- Journal of Cleaner Production (2023)
- Method
- Stock-flow modelling combined with geospatial data analysis.
- Evidence
- Strong effect
The vast accumulation of materials in global road and rail infrastructure, estimated at 314 Gt, carries substantial embodied greenhouse gas emissions, highlighting a critical area for sustainable design and resource management. This sustainability research insight is drawn from a 2023 study published in Journal of Cleaner Production. Using Stock-flow modelling combined with geospatial data analysis., researchers explored how this design variable affects real-world outcomes. The key design takeaway: Prioritize the use of low-carbon and recycled materials in the design and construction of transportation infrastructure, and plan for the end-of-life management of these materials.
Global mobility infrastructure stocks represent 41 tons of material per capita, with significant embodied emissions.
The vast accumulation of materials in global road and rail infrastructure, estimated at 314 Gt, carries substantial embodied greenhouse gas emissions, highlighting a critical area for sustainable design and resource management.
Journal of Cleaner Production · 2023
Key Findings
- 01Global mobility infrastructure stocks amount to 314 Gt of materials (41 tons/capita).
- 02Roads, primarily composed of aggregates and asphalt, constitute the majority of these material stocks.
- 03The study provides spatially explicit data on infrastructure stocks and their embodied emissions.
Application
Design takeaway
Prioritize the use of low-carbon and recycled materials in the design and construction of transportation infrastructure, and plan for the end-of-life management of these materials.
How to apply
When designing new infrastructure or planning upgrades, conduct a material flow analysis and embodied carbon assessment, considering the long-term implications of material choices and potential for reuse or recycling.
Project actions
- 01When researching materials for a design project, consider their 'embodied' environmental impact – the emissions created during their extraction, manufacturing, and transport.
- 02Explore how different material choices affect the overall lifecycle impact of a product or system.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Provides a global, spatially explicit assessment of infrastructure material stocks and emissions.
- +Uses a stock-flow consistent modelling approach.
Limitations
It's difficult to get precise data on the exact materials and their origins for large-scale infrastructure projects.
Reliability & validity
The study's reliability is supported by its stock-flow consistent modelling approach and integration of multiple data sources. Validity is enhanced by mapping at a fine resolution and including uncertainty ranges, though reliance on archetypal designs and assumptions introduces potential limitations.
Think critically
How can design innovation address the massive material stock of existing infrastructure, rather than just focusing on new construction?
Design Principles
"Minimize embodied carbon and material waste in infrastructure design by optimizing material selection and promoting circularity."
Understanding the material footprint of transportation infrastructure is crucial for developing strategies to reduce environmental impact. This insight informs decisions about material selection, infrastructure longevity, and the potential for circular economy approaches in construction and maintenance.
What This Means for Your Design
Think about all the roads and train tracks in the world – they're made of billions of tons of stuff, mostly rock and asphalt for roads. This means a lot of greenhouse gases were released to make them. We need to find ways to build and maintain them more sustainably.
How to use in your project
- 1.Use the concept of 'material stocks' and 'embodied emissions' to justify your choice of materials or to analyze the environmental impact of your design concept.
Add to My Project
Quick Cite
Paragraph starter
This research highlights the significant material stocks and embodied greenhouse gas emissions associated with global mobility infrastructure, emphasizing the need for sustainable material selection and lifecycle management in design projects.
Source
Journal of Cleaner Production
Mapping and modelling global mobility infrastructure stocks, material flows and their embodied greenhouse gas emissions
journal · 2023
View sourceQuestions About This Research
- What does the research say about global mobility infrastructure stocks represent 41 tons of material per capita, with significant embodied emissions?
- Prioritize the use of low-carbon and recycled materials in the design and construction of transportation infrastructure, and plan for the end-of-life management of these materials. Evidence: Journal of Cleaner Production (2023).
- Why does "Global mobility infrastructure stocks represent 41 tons of material per capita, with significant embodied emissions." matter for design?
- Understanding the material footprint of transportation infrastructure is crucial for developing strategies to reduce environmental impact. This insight informs decisions about material selection, infrastructure longevity, and the potential for circular economy approaches in construction and maintenance.
- How can designers apply this research?
- Prioritize the use of low-carbon and recycled materials in the design and construction of transportation infrastructure, and plan for the end-of-life management of these materials.
- What were the main findings?
- Global mobility infrastructure stocks amount to 314 Gt of materials (41 tons/capita).. Roads, primarily composed of aggregates and asphalt, constitute the majority of these material stocks.. The study provides spatially explicit data on infrastructure stocks and their embodied emissions.
- What research method was used?
- Stock-flow modelling combined with geospatial data analysis..
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2023 journal from Journal of Cleaner Production.
- What should I do differently in my next project?
- When designing new infrastructure or planning upgrades, conduct a material flow analysis and embodied carbon assessment, considering the long-term implications of material choices and potential for reuse or recycling.
- What are the limitations?
- Uncertainty ranges exist in material stock and emission estimates due to data aggregation and modelling assumptions.