Perception of Embodied Carbon Mitigation Strategies: The Case of Sri Lankan Construction Industry
Abstract
:1. Introduction
2. Literature Review
Embodied Carbon Mitigation Strategies
3. Research Methodology
4. Method of Analysis
5. Empirical Analyses and Findings
5.1. Global Carbon Emissions
5.2. Embodied Carbon Mitigation Strategies
5.3. Reasons for Low-awareness
6. Discussion
7. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Year | No. of Residential Construction Activities | No. of Non-Residential Construction Activities | No. of Additions and Alterations | Total Number of Activities |
---|---|---|---|---|
2007 | 423 | 1965 | 811 | 3199 |
2008 | 57 | 447 | 109 | 613 |
2010 | 374 | 1453 | 953 | 2780 |
2012 | 243 | 1833 | 614 | 2690 |
2014 | 955 | 2006 | 461 | 3422 |
2015 | 757 | 2941 | 664 | 4362 |
Profession | No. of Respondents | Percentage |
---|---|---|
Architect | 21 | 18.92% |
Civil Engineer | 35 | 31.53% |
Manager Compliance | 3 | 2.70% |
Electrical Engineer | 12 | 10.81% |
Facilities Manager | 16 | 14.41% |
Quantity Surveyor | 24 | 21.62% |
Factors | Percentage of Respondents Scoring | ||
---|---|---|---|
Disagree (Low-Awareness) | Neutral (Moderate Awareness) | Agree (Well-Awareness) | |
Good awareness of global carbon emission levels and how they occur | 44.14 | 36.04 | 19.82 |
Good awareness of impacts caused by the construction industry towards total global carbon emissions | 32.43 | 41.44 | 26.13 |
Well aware of the two emission types; embodied carbon emissions and operational carbon emissions | 56.76 | 24.32 | 18.92 |
More concerned about the operational carbon emissions than the embodied carbon emissions | 44.14 | 36.94 | 18.92 |
Sound knowledge on embodied carbon mitigation strategies | 75.68 | 10.81 | 13.51 |
Personal responsibility to ensure that the construction process has a low impact on the environment in terms of carbon emissions | 39.64 | 36.94 | 23.42 |
Consider reduction in embodied carbon emission as a personal responsibility in the construction project | 51.35 | 23.42 | 25.23 |
Factors | Descriptive Statistics | ||
---|---|---|---|
Mean | Standard Deviation | Rank | |
Good awareness of global carbon emission levels and how they occur | 2.75 | 0.847 | 3 |
Good awareness of impacts caused by the construction industry towards total global carbon emissions | 2.93 | 0.850 | 1 |
Well aware of the two emission types; embodied carbon emissions and operational carbon emissions | 2.56 | 0.931 | 6 |
More concerned about the operational carbon emissions than the embodied carbon emissions | 2.61 | 0.946 | 5 |
Sound knowledge on embodied carbon mitigation strategies | 2.17 | 0.971 | 7 |
Personal responsibility to ensure that the construction process has a low impact on the environment in terms of carbon emissions | 2.80 | 1.069 | 2 |
Consider reduction in embodied carbon emission as a personal responsibility in the construction project | 2.70 | 1.005 | 4 |
Factors | Percentage of Respondents Scoring | ||
---|---|---|---|
Low (≤ 2) | Moderate (3) | High (≥ 4) | |
Practical guidelines for the wider use of low-EC materials | 52.25 | 15.32 | 32.43 |
Better design | 6.31 | 36.94 | 56.76 |
Re-use and recovery of EE/EC intensive construction materials | 26.13 | 44.14 | 29.73 |
Tools, methods, and methodologies | 32.43 | 42.34 | 25.23 |
Policy and regulations (Governments) | 20.72 | 49.55 | 29.73 |
Refurbishment of existing buildings instead of new built | 10.81 | 45.95 | 43.24 |
De-carbonization of energy supply/grid | 48.65 | 25.23 | 26.13 |
Inclusion of waste, by-product, used materials into building materials | 40.54 | 30.63 | 28.83 |
Increased use of local materials | 11.71 | 40.54 | 47.75 |
Policy and regulations (Construction sector) | 26.13 | 36.04 | 37.84 |
People-driven change (key role of all BE stakeholders) | 37.84 | 37.84 | 24.32 |
More efficient construction processes/techniques | 22.52 | 45.95 | 31.53 |
Carbon mitigation offsets, emissions trading, and carbon tax | 38.74 | 18.02 | 43.24 |
Carbon sequestration | 57.66 | 20.72 | 21.62 |
Extending the building’s life | 12.61 | 43.24 | 44.14 |
Increased use of prefabricated elements/off-site manufacturing | 27.93 | 35.14 | 36.94 |
Demolition and rebuild | 18.92 | 46.85 | 34.23 |
Strategy | RII | Rank |
---|---|---|
Better design | 0.75 | 1 |
More efficient construction processes/techniques | 0.75 | 2 |
Increased use of local materials | 0.75 | 3 |
Refurbishment of existing buildings instead of new built | 0.73 | 4 |
Demolition and rebuild | 0.73 | 5 |
Inclusion of waste, by-product, used materials into building materials | 0.72 | 6 |
People-driven change (key role of all BE stakeholders) | 0.72 | 7 |
Increased use of prefabricated elements/off-site manufacturing | 0.71 | 8 |
Policy and regulations (Governments)] | 0.70 | 9 |
Carbon mitigation offsets, emissions trading, and carbon tax | 0.70 | 9 |
Tools, methods, and methodologies | 0.70 | 11 |
Policy and regulations (Construction sector) | 0.70 | 12 |
Extending the building’s life | 0.70 | 13 |
Re-use and recovery of EE/EC intensive construction materials | 0.68 | 14 |
De-carbonization of energy supply/grid | 0.66 | 15 |
Practical guidelines for wider use of low-EC materials | 0.65 | 16 |
Carbon sequestration | 0.57 | 17 |
Factors | Correlation Analysis | |||
---|---|---|---|---|
Spearman Rank Correlation | Spearman Sig. (2 Tailed) | Kendall’s Correlation Coefficient | Kendall’s Sig, (2 Tailed) | |
Practical guidelines for the wider use of low-EC materials | 0.258 | 0.006 | 0.238 | 0.004 |
Better design | 0.242 | 0.011 | 0.206 | 0.015 |
Re-use and recovery of EE/EC intensive construction materials | 0.233 | 0.014 | 0.202 | 0.014 |
Tools, methods, and methodologies | 0.113 | 0.236 | 0.079 | 0.338 |
Policy and regulations (Governments) | 0.228 | 0.016 | 0.179 | 0.027 |
Refurbishment of existing buildings instead of new built | 0.348 | 0.000 | 0.287 | 0.001 |
De-carbonization of energy supply/grid | 0.199 | 0.036 | 0.166 | 0.039 |
Inclusion of waste, by-product, used materials into building materials | 0.276 | 0.003 | 0.185 | 0.024 |
Increased use of local materials | 0.203 | 0.033 | 0.108 | 0.202 |
Policy and regulations (Construction sector) | 0.353 | 0.000 | 0.245 | 0.002 |
People-driven change (key role of all BE stakeholders) | 0.235 | 0.013 | 0.138 | 0.086 |
More efficient construction processes/techniques | 0.218 | 0.022 | 0.092 | 0.271 |
Carbon mitigation offsets, emissions trading, and carbon tax | 0.325 | 0.001 | 0.247 | 0.002 |
Carbon sequestration | 0.421 | 0.000 | 0.379 | 0.000 |
Extending the building’s life | 0.373 | 0.000 | 0.256 | 0.002 |
Increased use of prefabricated elements/off-site manufacturing | 0.150 | 0.117 | 0.098 | 0.237 |
Demolition and rebuild | 0.153 | 0.109 | 0.168 | 0.049 |
Percentage of Agreed Responses | |
---|---|
Psychological-Cognitive Reasons | |
The outcome of carbon footprint will not happen in my lifetime | 64.52 |
There are more important issues than the reduction of carbon footprint | 64.51 |
Nothing I can do to reduce carbon footprint, it is too complex to handle | 61.29 |
Social Reasons | |
If I take some initiatives to reduce carbon footprint, society will brand me as an activist or radical | 67.74 |
Actions to reduce carbon footprint will demand much of my time, money and effort | 96.78 |
Political Reasons | |
Handling carbon emission/footprint is a political matter | 67.74 |
The government and other authorities can handle this issue on their own | 83.87 |
This is not my problem, it is the responsibility of government and other authorities, so let them handle it | 90.32 |
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Willhelm Abeydeera, L.H.U.; Wadu Mesthrige, J.; Samarasinghalage, T.I. Perception of Embodied Carbon Mitigation Strategies: The Case of Sri Lankan Construction Industry. Sustainability 2019, 11, 3030. https://doi.org/10.3390/su11113030
Willhelm Abeydeera LHU, Wadu Mesthrige J, Samarasinghalage TI. Perception of Embodied Carbon Mitigation Strategies: The Case of Sri Lankan Construction Industry. Sustainability. 2019; 11(11):3030. https://doi.org/10.3390/su11113030
Chicago/Turabian StyleWillhelm Abeydeera, Lebunu Hewage Udara, Jayantha Wadu Mesthrige, and Tharushi Imalka Samarasinghalage. 2019. "Perception of Embodied Carbon Mitigation Strategies: The Case of Sri Lankan Construction Industry" Sustainability 11, no. 11: 3030. https://doi.org/10.3390/su11113030