A widely discussed topic lately, the circular economy encompasses a whole production and consumption system which pursues the reuse of existing materials as long as possible. However, how does this ongoing concept involve architecture, design and its aesthetics? Joining the shift towards a circular future, architecture is discovering how circular operations and the reuse of materials can result in new aesthetics, as well as in an overall improvement of its environmental impact.
Learning how circularity (and material reuse) creates distinctive aesthetics, the following article analyzes the way projects are reinterpreting their design process throughout three strategies: detachable, rustic and malleable architecture.
No-Fines Concrete with Steel Slag Samples by L.Korat et al. (2015). Image via ResearchGate. Licensed Under CC BY-SA 3.0
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.
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.
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.
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.
In Out Office / Alfredo Häberli. Image Courtesy of Andreu World
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.
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.
Render of affordable homes created out of plastic waste. Image Courtesy of Othalo
A lot of people around the world would agree that we are currently in a climate emergency. The IPCC report, released last year, makes for difficult reading. Practitioners in the built environment have taken to direct climate action, with organizations such as ACAN and Architects Declare fostering carbon literacy and calling for designers to re-evaluate how they practice.
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.
While circular economy is often discussed in relation to the architectural object through the lens of material recycling, design for disassembly, and material passports, the framework is most fully enacted at the neighbourhood and city scale. Whether it is visions of circular communities that hint at some level of self-sufficiency or policies set in motion by cities, urban-scale projects exemplify the guiding principles of the circular economy, providing a glimpse into what a fully-fledged version of it might look like. The following explores the strategies used in circular urban environments, from architecture and construction materials to energy production, waste management and food production, as well as the processes and operations that govern these designs, providing insights into the conditions that inform circularity.
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.
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.
Much has been said about circularity in the construction industry. Inspired by nature, the circular economy works in a continuous process of production, resorption and recycling, self-managing and naturally regulating itself, where waste can turn into supplies for the production of new products. It is a very interesting concept, but it faces some practical difficulties in everyday life, whether in the demolition / disassembly process, or in the correct disposal of materials and waste; but mostly due to the lack of technologies available to recycle or give new use to construction materials. About 40% of all waste generated on Planet Earth comes from civil construction, and a good part of it could be recycled. Concrete is an especially important material because of its large carbon footprint in production, its ubiquity and massive use, and also because of the difficulty of recycling or reusing it.
Casa Collage / S+PS Architects. Image Cortesia de S+PS Architects
Reform and adaptation of spaces represent a significant parcel of projects ordered to architecture firms, and reuse of preexisting structures is not newness. Functions and needs change over time, therefore adaptations are required to meet new demands. However, no matter how much the maintenance of a building is, in most cases, preferred in economic and ecological sense to its demolition and a new construction from the beginning, the logic of the reuse of a space does not usually extend to its parts that become, thus, rubble.
Valentino Gareri Atelier has been selected to design the pilot project for a circular economy village model that aims to redefine urban sprawl through sustainability and diverse programming. Comprising eight residential hamlets with co-working and entertainment spaces, The Spiral Village will be created using emerging 3D printing methods and will foster circularity through a waste-to-resources hub, a diverse regenerative agricultural system, a sustainable water management system and renewable energy.
The first wooden housing modules of Juf Nienke, a new circular prefabricated timber housing project by SeARCH, RAU, and DS landscape architects, has been installed in Amsterdam. The project will feature 61 rental homes made entirely of wood, and will sit at the entrance of Centrumeiland, a newly raised piece of land on Lake IJmeer that features 1500 housing units. It is set to be one of the most sustainable apartment buildings in the Netherlands, incorporating an innovative cross-laminated timber construction and utilizing recycled materials.
Pablo van der Lugt is an architect, author and speaker. His research focuses on the potential of materials such as bamboo and mass timber for the construction sector, and their positive impacts on the world. “Throughout my professional career both in university (including my PhD research on the carbon footprint of engineered bamboo and wood) and industry the past 15 years I have found there are many misconceptions about these materials which hamper their large scale adoption. For this reason I ‘translated’ my research findings into two contemporary books for designers and architects about the potential of bamboo: Booming Bamboo, and engineered timber: Tomorrow’s Timber. They aim to dispel these myths and show the incredible potential of the latest generation of biobased building materials in the required transition to a carbon neutral, healthy and circular built environment.” We recently had the opportunity to talk with him about these topics. Read more below.
CRA-Carlo Ratti Associati and Italo Rota Building Office, along with Matteo Gatto and F&M Ingegneria designed the Italian Pavilion at the Expo 2020 Dubai with a focus on reconfigurable architecture and circularity. The architects used orange peel, coffee ground, algae, and sand as construction materials, along with recycled plastic for the façade's ropes and boat hulls for the roof. The architectural design of the pavilion and the materials used create a natural climate mitigation system that substitutes for air conditioning.
