Quantification of construction raw materials consumption in the rapidly developing urban environment of Hanoi using earth observation and material flow analysis principles.
Bide, T.; Novellino, A.; Petavratzi, E.; Watson, S.; Mitchell, C. 
ORCID: https://orcid.org/0000-0002-5911-5668.
2022
Quantification of construction raw materials consumption in the rapidly developing urban environment of Hanoi using earth observation and material flow analysis principles.
[Lecture]
In: The 2022 International Symposium on Resilient and Sustainable Cities & The 22nd Annual General Meeting of UK-CARE, Online, 6-8 Dec 2022.
(Unpublished)
Abstract/Summary
Increasing demand for significant volumes of construction materials in rapidly developing urban environments, especially sand for use in concrete, is causing significant socio-economic and environmental issues. Excessive consumption and poor management of raw materials, often concentrated in the hinterland of major cities, make it increasingly hard for society to meet sustainable development goals (e.g. SDG12 on responsible consumption and production) and decarbonisation or sustainability related policies. However, it is difficult to implement suitable resource management policies without understanding material demand for urban development at an appropriate spatial level (i.e. city level) where it can be managed and mitigated. Here we attempt to address this data gap by combining earth observation datasets with estimates of materials contained within urban infrastructure (material intensities) to calculate construction materials stocks and consumption of construction materials in Hanoi. Freely available spatial data on buildings have been gathered using a variety of earth observation sources such as the GlobalMLBuildingFootpint, the World Settlement Footprint 3D dataset and land use classification maps. Linking this with estimated quantities of construction material in typical buildings in Hanoi enables quantification of building stocks for a range of commodities and building types over time. Our results show that for every new km2 of urban infrastructure approximately 0.8 million tonnes of concrete, or 0.5 million tonnes of sand, 0.57 million tonnes of gravel and 0.2 million tonnes of cement are required. If the ambitions of the Hanoi Masterplan are to be achieved by 2030, then the material demand is likely to be for 105 million tonnes of sand, 117 million tonnes of gravel and 39 million tonnes of cement, enough to build a skyscraper around 8 km high. These values far exceed current extraction rates and show how careful planning is required to ensure sustainable access to natural resources, such as sand and aggregates, into the future.
| Item Type: | Publication - Conference Item (Lecture) |
|---|---|
| Additional Keywords: | IGRD |
| Date made live: | 11 Jan 2023 09:57 +0 (UTC) |
| URI: | https://nora.nerc.ac.uk/id/eprint/533853 |
Actions (login required)
 |
View Item |
Document Downloads
Downloads for past 30 days
Downloads per month over past year
Tools
Tools
