Collection
(16)
Circular Toolbox
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Article
Factsheet biobased en circulaire isolatiematerialen
In opdracht van de gemeente Amsterdam heeft Spaak acht veelbelovende circulaire
isolatiematerialen – cellulose, gras, hennep, houtvezel, katoen, riet, stro en vlas – onderzocht op
betaalbaarheid, beschikbaarheid en producteigenschappen. Het onderzoek is uitgevoerd door
middel van het interviewen van 17 marktpartijen die biobased/circulair isolatiemateriaal
produceren en/of ontwikkelen. Daarnaast is er een literatuurstudie uitgevoerd en zijn er
databases geraadpleegd om de factsheet te produceren. De resultaten zijn weergegeven in
factsheets per gebouwelement – dak, gevel en vloer – en toegepast op casussen van bestaande
utiliteitsbouw en gemiddelde (Amsterdamse) woningen.
Door de feiten op een rij te zetten, hebben we aangetoond dat er geen excuses meer zijn om niet
circulair te isoleren. De CO2-eq uitstoot en MKI (Milieu Kosten Indicator) van EPS (piepschuim) is,
bijvoorbeeld, 4 keer zo hoog als van het gebruik van vlas als isolatiemateriaal. Daarnaast zijn
biobased materialen gezonder om mee te werken, houden ze beter de warmte buiten in de zomer
en binnen in de winter en zijn ze niet giftig voor mens en dier.
Uit interviews met marktpartijen en experts blijkt dat de marktprijs voor circulaire materialen
gemiddeld 11% hoger ligt dan conventioneel, als je echter de milieukosten meeneemt (MKI) daalt
het verschil naar 3%. Naar verwachting wordt het verschil steeds kleiner: conventionele
materialen worden duurder en milieu-impact gaat een grotere (financiële) rol spelen in de kosten
van een isolatiemateriaal. Daarnaast is er voldoende biobased en circulaire isolatiemateriaal
beschikbaar om de huidige vraag naar isolatiematerialen aan te kunnen (2,5 miljoen woningen in
heel Nederland voor 2030). De isolatiewaarde, brandveiligheid en vochtwerendheid van de
circulaire materialen komen overeen met de eigenschappen van conventionele materialen. -
Collection
Circular toolbox (English version)
Welcome to the English version of the Circular Toolbox. In 2021 the City of Amsterdam published 10 articles on circular construction practices together with our partners Copper8 and Metabolic. We find it very valuable to share knowledge with our international network and therefore invite you to dive into the articles in order to gather a better understanding of the transition we are currently going through on a global scale.
For more information contact:
Desirée Bernhardt
Senior Policy Officer Circular Built Environment
City of Amsterdam
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Collection
1. Circular Design
Circular design is receiving increasing attention, both in the built environment and in public space. Circular design makes buildings more adaptable and enables the high-value reuse of products at the end of their life. A circular design also ensures that materials can be reused more easily.
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In this collection:
- A summary on circular design (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
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Collection
2. Environmental impact of building materials
Lowering the environmental impact of building materials and processes is an important part of circular construction. This applies to both public space (GWW) and the built environment (B&U). The Environmental Cost Indicator (MKI) is the instrument to express this environmental impact within civil engineering; the Environmental Performance Building (MPG) does this for a building.
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In this collection:
- A Summary on the environmental impact of building materials (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
_______________________________________________________________________________________
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Collection
3. Recycled building materials
The use of recycled materials is an important part of circular construction. This means that new buildings and public space are (partly) built with recycled products and materials. When building with recycled products and building materials, it is important to reuse them as high-quality as possible.
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In this collection:
- A summary about building with recycled building materials (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
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Collection
4. Material Passports
Material passports (or "Passports for Construction") are a digital registration of buildings or structures, in which the material composition and interconnections between materials are described. This data comes from a Building Information Model (BIM). With these insights, maintenance can be better steered during the use phase, and high-quality reuse at the end of the service life becomes possible.
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In this collection:
- A summary on material passports (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
_____________________________________________________________________________________________________
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Collection
5. Circular revenue models
Circular revenue models are a way to shape extended producer responsibility - extending the responsibility of producers for the products. Currently, eight circular revenue models can be distinguished. These revenue models give producers a financial incentive to design circularly, to increase the quality of their products and possibly to take them back at the end of their lifespan. However, a circular revenue model does not yet make a circular product: construction products will also have to change on a technical level.
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In this collection:
- A summary on circular revenue models (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
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Collection
6. Timber construction
To reduce the impact of the built environment, it is important to build more sustainably. In addition to energy-efficient or energy-neutral construction, building with sustainable, biobased materials such as wood is an important strategy. In new construction, a lot of environmental impact can be saved by building with wood. This is in contrast to the commonly used building materials steel and concrete, where a high environmental impact is generated during the production process. In addition, wood acts as a CO2 storage system, because wood absorbs CO2 from the air when it growths into a tree.
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In this collection:
- A summary on timber construction (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
_____________________________________________________________________________________________________
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Collection
7. Biobased renovation
Renovation of existing buildings is often primarily about improving the quality of the indoor climate and the energy performance of the building. When we renovate without taking into account the embedded CO2 impact of the materials used, it is trying to empty the ocean with a thimble. We save energy and emissions in the user phase, but we emit an unnecessary amount of greenhouse gases for the building materials and products used in the renovation. In exchange for better energy performance, the new problems in terms of resource consumption and climate change are causing. The energy transition and the embedded environmental impact of building materials cannot therefore be viewed separated from each other.
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In this collection:
- A summary on biobased renovation (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
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Collection
8. Circular demolition
In the current 'linear' construction chain, raw materials are extracted, transformed into building materials and products, used and demolished at the end of their life cycle and regarded as waste. A model of take-make-waste. In this model, the demolition of buildings at the end of the chain mainly means a loss of raw materials. At best a low-grade form of recycling for materials and a loss of value. Circular demolition differs from traditional demolition in that it focuses on harvesting materials (and thus preserving value), instead of removing a structure at the lowest possible cost within a tight schedule. By taking the time and space to dismantle buildings and separate and dispose of flows, circular demolition and high-quality reuse can make a positive contribution to a circular construction economy.
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In this collection:
- A summary on circular demolition (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
_____________________________________________________________________________________________________
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Collection
9. Circular Construction Hubs
In the transition to a circular construction economy, designing efficient logistics for the processing and reuse of secondary materials is an important challenge. Supply and demand do not always match in time, location, quantity and quality. We are therefore looking at the development of physical places where demand and supply of secondary materials are brought together: construction hubs.
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In this collection:
- A summary on circular construction hubs (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
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For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
_____________________________________________________________________________________________________
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Collection
10. Digitization of the built environment
Digitization of the built environment can help with the circular design, shaping and managing of the built environment. It can also promote the high-quality reuse of raw materials. There are options at all levels of scale: building, area and for the entire city and region.
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In this collection:
- A summary on digitization of the built environment (2021)
- Good examples from the municipality and other parties
- A library with more information and reports
_____________________________________________________________________________________________________
For questions, ideas and constructive feedback, please contact:
Desirée Bernhardt
Senior policy advisor circular economy (R&D)
_____________________________________________________________________________________________________
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Collection
Circulair inkopen
Over dit onderwerp hebben we (nog) geen artikel geschreven. Wel vind je hier bruikbare documenten om je op weg te helpen.
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Collection
Nationaal beleid circulair bouwen
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Article
Lexicon Circulair bouwen
Om op een effectieve manier aan circulair bouwen te werken, is een eenduidig gebruik van terminologie van groot belang: we moeten ‘dezelfde taal spreken’. Dit lexicon biedt duidelijkheid over eenduidig gebruik van verschillende termen. Het lexicon is opgebouwd uit twee delen:
- Een definitielijst, waarin de veelgebruikte termen rondom circulair bouwen staan gedefinieerd;
- Een bronnenlijst waarin vermeld staat waar de benoemde definities vandaan zijn gekomen. -
Article
Themastudie circulaire gebiedsontwikkeling
Vanuit het programma Duurzame gebiedsontwikkeling worden thematische studies uitgevoerd om zowel handen en voeten te geven aan bestaande beleidsambities in de gebiedsontwikkeling, als om voeding te geven aan nieuw duurzaamheidsbeleid en uitgangspunten.
Over de studie
Circulaire Gebiedsontwikkeling identificeert mogelijkheden om circulariteit te systematiseren en te integreren in de huidige praktijk. Er zijn veel kansen om de huidige praktijk meer circulair te maken dus om kringlopen te sluiten. In een circulaire (bouw)economie worden kostbare materialen keer op keer gebruikt, kosten omlaag gebracht, de lokale/nationale economie verstrekt én wordt er een positieve bijdrage geleverd aan klimaatverandering en biodiversiteit.De volledige studie download je op deze pagina.
Nu beschikbaar: de uitgebereide samenvatting
Hoewel urgent, een boekwerk circulaire gebiedsontwikkeling is voor de meesten van ons nét iets teveel van het goede. Vandaar vers van de pers: een samenvatting (boekje). In de samenvatting leer je meer over het raamwerk circulaire gebiedsontwikkeling en de onderdelen van circulaire gebiedsontwikkeling, inclusief voorbeelden. Waarom is circulaire gebiedsontwikkeling relevant? Waar moet ik dan aan denken? Hoe past het in het ontwikkelproces? Ook bevat het een lijst vragen die gebiedsontwikkelaars en betrokken partijen zichzelf en elkaar kunnen (of moeten) stellen om tot een circulair gebied én een circulaire ontwikkeling te komen.De samenvatting volgt (update augustus 2020).