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Circular Economy: The Latest Architecture and News

Cities as Living Laboratories: The Smart City Projects of Amsterdam, Singapore, and Barcelona

Cities are a canvas for architectural creativity and the dynamism of urban life. In recent years, they have taken on an additional role: that of living laboratories for innovative architecture and urban design. International cities have become experimental grounds for architectural technology, sustainable practices, and human-centered design principles to be tested and refined. This paradigm shift has not only transformed the physical aspects of urban environments but has also redefined the relationship between architecture, community, and the built environment.

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What Does it Cost to Recycle Building Materials?

Almost two decades ago, in the downtown corridor of Columbus, Ohio, the century-old landmarked Lazarus Building underwent an extensive renovation to save the department store and restore it to its former glory. Sixty million dollars went into its restoration and transformation into a retail and office complex. During the construction, workers recycled nearly 5,000 pounds of steel, 2,000 pounds of concrete, and significant amounts of carpeting, ceiling tiles, and various wood- keeping 22,000 pounds of debris out of Ohio’s landfills. They also saved more than $25 million dollars by implementing this rigorous recycling process.

What Is Mass Timber?

Wood is the concrete of the future. As timber construction becomes increasingly popular, you have probably heard this phrase. However, we are not talking about traditional construction techniques using timber, but rather about this well-known material combined with cutting-edge technology.

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Circular Economy: Designing for Bioregions

Cities are complex ecologies of intersecting natural systems and urban infrastructure. Environmental degradation has brought attention to the asymbiotic relationship between man-made and natural systems. A new economy is emerging where interdependence and environmental stewardship are valued. Designing for a circular economy requires consideration of human habitats not as towns or cities, but as bioregions. 

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Circular Economy: Design Strategies in a Larger Time Dimension

These days, the architecture industry cannot disregard how significant the challenge of sustainability has become. One strategy for achieving sustainable development is a circular economy, based on a sustainable life cycle. This strategy minimizes resource usage and extends the useful life of buildings from a design perspective. Moreover, another challenge is how to increase the usability of the building itself, in addition to how we've incorporated building disassembly into the cycle. This requires that designers take the future into account when making design decisions, integrating the requirements of the present with the potential outcomes of what has not yet happened.

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WasteBuild Zero 2023

WasteBuild Zero is a 2-day event that unites the built environment to showcase the latest materials, techniques, solutions and innovators that are helping to deliver low carbon and circular construction schemes today. Our aim is to support the transition towards a circular and regenerative built environment and in the process to tackle the climate emergency.

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.