The Integrated Carbon Metrics (ICM) Embodied Carbon Life Cycle Inventory (LCI) Database (ICM Database) provides Australian-specific Carbon Footprint Intensities for around 700 construction and building materials, as well as built environment-related products and processes, based on a hybrid life cycle assessment methodology.
This note presents a method to decompose life cycle inventories derived from integrated and mixed-unit hybrid life cycle assessment. The approach extends the decomposition method described by Wiedmann by diferentiating between impacts from industries, products and processes.
The construction industry contributes around 18% of greenhouse gas emissions, 40% of depletion of natural resources, and 25% of wastes globally. To reduce these impacts, construction industries can adopt low-carbon alternatives for construction materials and waste minimisation strategies, including the recycling of construction and demolition waste.
Cutter soil mix (CSM) walls are created by mixing soils with cement and bentonite slurry to produce a soil–cement mix with modest tensile and compressive strengths. CSM walls may be stabilised using internal steel beams. Presented here are the results of a CSM wall field trial and laboratory testing programme.
As global population and urbanization increase, so do the direct and indirect environmental impacts of construction around the world. Low-impact products, buildings, precincts and cities are needed to mitigate the effects of building construction and use. Analysis of embodied energy and greenhouse gas (GHG) emissions across these scales is becoming more important to support this direction.
New research shows that 90 megatonnes of greenhouse gas emissions are emitted annually in constructing new buildings and infrastructure and maintaining the existing ones. Reducing this liability of “embodied” emissions will be much harder than building zero-carbon buildings. Here is why.
This project interim report presents the initial outcomes of the research that consist of:
PART 1: Recruitment of participants from single dwellings and multi-unit dwellings, and initial data analysis of the stage 1 survey;
PART 2: Analysis of the BASIX assessment model, key variables and methods of data collection for the stage 2 energy performance monitoring.
As part of the Integrated Carbon Metrics project, which comprehensively quantifies embodied GHG emissions related to the built environment in Australia, this contribution evaluates construction material replacement scenarios at the economy-wide scale.
One third of global greenhouse gas emissions are emitted from the building sector contributing significantly to the problem of climate change. While more work has been done on decreasing direct emissions from the operation of buildings, embodied emissions of construction materials receive little consideration even though they constitute a significant additional proportion of emissions.
Concrete is the second most used material after water and the production of cement is responsible for 5–8% of global carbon dioxide emissions. The development of low-carbon concretes is pursued worldwide to help the construction industry make its contribution to decarbonising the built environment and achieving carbon reduction targets agreed under the Paris Climate Agreement. However, there is uncertainty around the actual amount of greenhouse gas emissions that can be avoided by employing alternative types of concrete.