Abstract
Various authorities identify the circular building strategy as the best way to reduce the environmental impact of the building sector. The EURECA project aims to develop a circular facade system for the renovation of high-rise buildings. The circularity of the facade systems proposed within the project should be evaluated in an objective manner. Current circularity assessment methods exist, however, they appear unfit to evaluate facade systems at an early design stage. Based on the analysis of existing assessment methods a new circularity assessment method is developed. The developed method allows to measure the circularity on element level with a limited amount of required information, allowing early stage decision-making. The method considers the parameters recycling, environmental cost, expected service life, component dependency, layer dependency and flexibility for reuse. The method is tested on four facade renovation systems: standard ETICS, circular ETICS, ventilated facade with rigid insulation and ventilated facade with flexible insulation. The circularity of each system can be represented by a radar chart, giving the score per parameter, or by a single score. In addition to the circular aspect, the financial aspect is added in the evaluation of the facade systems by using the Pareto front method.
Highlights
IntroductionIn Europe the building sector is responsible for half of all energy use, 40% of all greenhouse gas emissions, half of all raw material extraction and a third of all water use [1]
The method is tested on four facade renovation systems: standard ETICS, circular ETICS, ventilated facade with rigid insulation and ventilated facade with flexible insulation
The circular building strategy is the translation of the circular economy to the building sector
Summary
In Europe the building sector is responsible for half of all energy use, 40% of all greenhouse gas emissions, half of all raw material extraction and a third of all water use [1]. These astounding numbers show the need for a shift in our way of building. Various authorities identify the circular building strategy as the best way to move forward and reduce the environmental impact of the building sector. The circular building strategy is the translation of the circular economy to the building sector
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