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Circular Economy: The Latest Architecture and News

What is Subscription Economy in the Context of Architectural Production?

Subscriptions are quickly becoming an integral part of everyday life. For example, streaming platforms have completely replaced the need to own video cassettes, while ride-sharing services partially cover the need to own a private car. Subscriptions have been largely understood as digital services, but a new trend suggests that the same concept could be transferred to physical objects in the near future. Instead of owning a fridge, a washing machine, or even light bulbs, one could acquire a subscription to ensure the freshness of produce, clean clothes, and a well-lit home.

The concept is known as the “subscription-based economy,” a variant of the “circular economy” notion. It postulates that instead of owning some of the objects used every day, one could subscribe to a service to gain access to the same benefits, but without the need to own, maintain or dispose of the object in question. Consumers no longer buy products; they buy access to services. Sometimes, it would mean simply leasing the object instead of purchasing it, but the model goes one step further. It inscribes a shift of responsibility and mentality. Because consumers no longer own the objects, the responsibility to reuse and recycle falls to the producers, who are now in charge of the entire life cycle of the objects they create.

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Upcycling Polycarbonate: Trapezoidal and Corrugated Sheets from Waste

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Sustainability needs to go further beyond inspiring speeches and promises, with visible, concrete actions. In order to see this change, it is essential for individuals, companies and governments to take responsibility and act in a sustainable manner in their daily lives and practices. By taking into account the environmental and social impacts of their decisions and seeking more conscious and responsible alternatives, they can take steps to ensure a sustainable future for the next generations. In the construction industry this is even more urgent. Responsible for a large amount of solid waste and greenhouse gas emissions, it is essential for this industry to adopt sustainable practices, such as recycling, to minimize environmental impacts.

However, even though product recycling processes have significantly advanced in recent years, there are still certain challenges associated with the use of recycled materials. This is due to a variety of factors, such as performance and durability, or even due to the difficulty of obtaining suitable raw materials. But there are also successful examples that show the possibilities of recycled materials.

Circular Economy and Architectural Heritage

Form and function. Terms that accompany several definitions that belong to architecture, but more is needed to summarize the practice in 2023. Nowadays, building involves understanding the cycles of materials and how each action can be linked to the extraction of natural resources and their damage to the environment. We live in an urgent need to review the way we produce built space. In this search for models that move away from linear systems and provide a constant process of transformation and redistribution of matter, strategies arising from the circular economy emerge as a possible path. Its application in architectural heritage – for maintenance or restoration – can incentive the necessary changes toward a more sustainable society.

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“Circular Economy Is a Point of No Return”: An Interview With Lucas Rosse Caldas

Carbon footprint, circularity and environmental sustainability are terms that are increasingly present in many professional fields, but what do they mean? How do they relate to architecture and the built environment? We spoke with civil, environmental and sanitary engineer Lucas Rosse Caldas about these and other emerging architectural issues.

Lucas is a professor at the Graduate Program in Architecture at the Federal University of Rio de Janeiro and the Civil Engineering Program at the same institution. He participated in chapter 9 of the sixth report of the Intergovernmental Panel on Climate Change (IPCC) on buildings. He wrote several scientific and technical articles about architecture and sustainable construction.

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What is Steel Slag Concrete?

The construction industry is one of the largest in the world, and cement and concrete are literally the building blocks of its success. Evolving from prehistoric caves to today’s towering skyscrapers, concrete structures have and will continue to be vital components of modern civilization, providing long-lasting, reliable support for buildings, roads, bridges, tunnels and dams. So much so that concrete is the most consumed material on Earth, second only to water, while the steel used to reinforce it is by far the most commonly used metal. But this doesn’t come without high environmental costs: concrete accounts for 8% of global CO2 emissions, much of which come from the extraction and transportation of aggregate materials such as sand, gravel and crushed stone.

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Edible Cement: Innovative Material That Uses Food Waste in Civil Construction

Add cabbage leaves, orange peels, onions, bananas and a few slices of pumpkin to get... cement. That's right, researchers from the University of Tokyo in Japan have developed a technique through which it is possible to produce cement from food waste. Besides being used in construction, the innovative initiative is edible as well. You can make boiled cement into a delicious meal by adjusting flavors, adding seasonings, and breaking it into pieces.

Spanish Architects Create Moisture-Absorbing Mortar from Construction Waste

Cities are filled with waste materials and the need to reuse existing resources has become key in fighting the increase in waste production. More than a third of all the waste generated in the EU comes from construction and demolition, containing different materials such as glass, concrete, bricks and ceramics. But how to manage this staggering amount of waste production from construction? According to the Spanish Law on Waste and Contaminating Soils, concrete and ceramic waste with no considerable processing can both be reused in construction . By combining reused material waste with technology, architectural design can create innovative solutions that contribute to minimizing environmental impact.

Ecological Materials: Towards a New Economy

The world’s most primitive construction materials are being used to create the most advanced buildings. In light of environmental crises, architects are focusing their efforts in designing better built environments for people and the planet. The results may often seem ‘greenwashed’, failing to address the root of ecological distress. Environmentally responsible architecture must aim not to reverse the effects of the ecological crisis, but instigate a revolution in buildings and how we inhabit them. Essays from the book The Art of Earth Architecture: Past, Present, Future envision a shift that will be a philosophical, moral, technological and political leap into a future of environmental resilience.

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Sustainable Office Furniture: Promoting Circular Design in the Workplace

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Interior architects and designers have often claimed that a well-designed office space will translate into greater productivity, creativity and worker satisfaction –yet the impact is greater than most tend to imagine. Recent studies suggest that good design positively impacts company culture, fosters a sense of community and creates a healthy, happy and motivating environment. In fact, it directly influences the recruitment and retention of talent: “workplace design significantly increases the attractiveness of employers to potential candidates.” Proper lighting, a flexible layout and biophilic features are all important factors to consider during the planning stage. But to fully address user comfort and well-being, these must be combined with excellent furniture design. After all, integrating high-quality ergonomic pieces is a simple way to boost mood and enhance functionality and aesthetics when creating or redecorating the workspace.

How Can Zinc Architecture Contribute to the Circular Economy?

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As climate change continues to reach unprecedented levels, many are pointing towards enhancing circularity in the construction sector. Essentially, the circular economy aims to eliminate waste and the continual use of resources by repeatedly reusing, repairing or recycling materials. The cyclical approach is able to meet demand and minimize CO2 emissions by extending a product’s lifespan, which is especially important when dealing with limited resources. Unlike the traditional linear extractive method –where everything goes through an extremely contaminating process of 'take-make-waste'–, circularity keeps materials in use for as long as possible to extract maximum value. This, in turn, reduces pollution, regenerates natural systems and contributes to a healthier built environment, hence building economic, natural, and social capital.

Replacing Cement with Waste: Embracing the Circular Economy with Polymer Technology

When approaching the process of recycling building materials, there are a number of obstacles to achieving a comprehensive and effective result. First, careless demolition can make the process very complex, as products with different recycling products are often mixed. In addition, not all materials can be efficiently recycled or processed, as many still need expensive or overly complex processes. But the construction industry, being a huge contributor to waste production and greenhouse gas emissions, has also developed multiple new technologies to improve its practices. This is the case of the WOOL2LOOP project, which seeks to solve one of the biggest challenges in applying a circular approach to construction and demolition waste.

"Mad About Dugnad" Exhibition at Aedes Reflects on Achieving a Sustainable Architecture Future

In a new exhibition at AEDES Architecture Forum in Berlin, Norwegian architecture firm Mad arkitekter showcases four examples of sustainable architecture, stressing the importance of collaboration and cross-disciplinary for achieving climate goals. On view through until March 10, Mad About Dugnad – Work Together, Build Better echoes the Norwegian tradition of "dugnad", which refers to community solidarity towards achieving a common goal, a key concept in creating solutions for a sustainable future.

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Architekturwoche Basel Reveals the Design of Inaugural Basel Pavilion Made of Recycled Building Components

The new biennial event Architekturwoche Basel (AWB) will debut this May as a platform for discussing architecture and urban development through the lens of sustainable construction and the circular economy. The inaugural edition also marks the launch of the first Basel Pavilion, a temporary structure meant to showcase new possibilities for environmentally-friendly building practices. The winning design, “Loggia Basileana”, created by architecture practice isla, is made of reused building components and features a series of modules that form a continuous pedestrian passageway along the train tracks on the Dreispitz site.

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