Widely recognized as being responsible for 8% of global CO2 emissions, concrete should be a blacklisted material, relegated to the shameful annals of architectural history. Rapid global urbanization, however, will ensure its unequaled production simplicity and structural strength help retain concrete’s firm grip on the construction industry.
If you can’t beat it, improve it: is the industry’s mantra on innovation, currently developing various alternatives to concrete or its constituent parts and admixtures. So with a concrete set for the environmental green list, the concrete revolution –using the material as an aesthetic exterior facade, interior decoration and fittings, or even in furniture and lighting, as well as a structural framework– is free to continue.
Material researchers and Ph.D. students at Imperial College London, Sam Draper and Barney Shanks have won the 2022 OBEL AWARD for Seratech, a solution for carbon-neutral concrete. With a special focus this year on “embodied emissions”, the OBEL AWARD jury selected scientists to obtain the architecture award to “encourage innovative cross-disciplinary solutions to the challenges of climate change”.
Los Manantiales by Felix Candela. Image Courtesy of Alexander Eisenschmid
Architecture is often an ambitious profession, with many architects hoping to positively contribute to the social life of the communities, create emotional responses, and add moments of delight and solace to our daily experiences. However, market forces have a way of applying constant pressure on this field, often being the deciding factor in many design choices. Costs and economic value are generally a good indicator of how, when, and to what extent certain materials are being used: the standard rule is the cheaper, the better. But materials are only part of the equation. Site labor, management, and design costs are also considered, depicting a complex picture of the balance between the cost of materials and the cost of labor and its effect on the architectural product.
The expression "a perfect storm" refers to an event (typically an unfortunate one) which is exacerbated due to a confluence of negative or unpredictable factors. It is widely used when describing meteorological phenomena, but can also be applied to other contexts, such as the economy. The analogy can also be used to describe the relationship between the climate crisis and the world's dependence on concrete. As demonstrated in the Chatham House report, while cement (an essential element for concrete manufacturing) is extremely detrimental to the greenhouse effect and climate crisis –representing about 8% of global CO2 emissions–, its global production is nevertheless expected to increase over the next 30 years. It is said that this increase will stem from the demand for rapid urbanization in regions such as Southeast Asia and sub-Saharan Africa. At the same time, the last IPCC report warned that we only have 11 years to reduce emissions and prevent irreversible damage due to climate change. In other words, the cement industry is facing a significant expansion at a time when emissions need to fall rapidly – a perfect storm.
In addition to their aesthetic appeal, the use of raw materials can save resources by bypassing the use of additional coatings and processes. This type of solution was most commonly used in utility buildings, such as infrastructure, factories, and warehouses. Exposed concrete floors, for example, were primarily found in industrial spaces, parking lots, and gas stations. However, they are increasingly being used in structures of different programs due to their appearance, durability, resistance, and vast possibilities for finishes. But what are the main factors to be aware of when using a concrete floor for a project?
https://www.archdaily.com/933296/polished-concrete-floors-18-projects-that-combine-aesthetics-durability-and-ease-of-executionEduardo Souza e Matheus Pereira
Upon becoming a sovereign country, free from British Rule, the people of India found themselves faced with questions they had never needed to answer before. Coming from different cultures and origins, the citizens began to wonder what post-independence India would stand for. The nation-builders now had the choice to carve out their own future, along with the responsibility to reclaim its identity - but what was India's identity? Was it the temples and huts of the indigenous folk, the lofty palaces of the Mughal era, or the debris of British rule? There began a search for a contemporary Indian sensibility that would carry the collective histories of citizens towards a future of hope.
When cities grow, fuelled by an expanding population, housing becomes an essential component of the urban character of a metropolis. Across the world, housing experiments have been propagated by governments and states, with mixed results, and undoubtedly mixed opinions. The Soviet-era housing estates of Central and Eastern Europe are particularly interesting in that regard. These mass housing projects have been dismissed as eyesores and viewed as unimaginative monolithic structures. The legacy of these developments, however, is a lot more complicated than that.
Vista de la entrada principal. Image Cortesía de Weberhofer, W. (1970). Edificio PetroPerú. [Fotografías]. Archivo de la familia Weberhofer, Lima. Visitado el 3 de octubre de 2014
The Petroperú building, jointly designed by architects Walter Weberhofer and Daniel Arana Ríos, was the result of a state competition held by the military government of Velasco Alvarado in the early 1970s. The building, strategically located in the capital of Peru, within the prosperous district of San Isidro, was designed to house the recently created state company in charge of the whole petroleum process of the country (Petroperú S.A.). The monumental building, built and inaugurated in 1973, became the symbol of the newly installed regime.
Contemporary challenges and developments in technology inevitably trigger changes in the way we design and build our cities. SUMMARY, one of ArchDaily's Best New Practices of 2021, is a Portuguese architecture studio focused on the development of prefabricated and modular building systems. Striking a balance between pragmatism and experimentalism, the firm develops prefabricated solutions in order to respond to a driving challenge of contemporary architecture—to speed up and simplify the construction process. Founded in 2015 by the architect Samuel Gonçalves, a graduate of the School of Architecture of the University of Porto, the studio has presented at prominent events such as the 2016 Venice Biennale. We talked with Samuel about the firm's practical experience in prefabrication and modulation, as well as their experiments and forays into research.
Whether to mark a change of direction, to highlight its first steps or its own presence in a room, stairs that combine two or more materials tend to draw attention by establishing dialogs between particular characteristics of each material. Concrete, steel and wood are some of the most common choices to compose the structure of stairs due to their high strength and versatility. But, when combined, these different materials expand their individual possibilities and reveal how the design can be tailored to their peculiarities and connections.
The combination of textures, colors, and finishes among materials can provide a number of creative solutions for these elements used for vertical circulation, as shown in LÂM’s Home, by AD+studio and House 9A, by 23o5Studio, characterized by stairs with a sturdy and rough base that meets a light and sleek structure of steps. The opposite composition order, a lighter base that meets a robust set of steps, thrives ingeniously in Luis Carbonell's Casa Chulavista and messina | rivas' Angatuba House, where the light wooden stairs' base is followed by raw concrete steps.
Cube / HENN Dresden University of Technology. Courtesy of Iurii Vakaliuk
Seen as one of the great promises for the future of construction, carbon concrete mixes strength, lightness and flexibility. In addition, at a time marked by a serious environmental crisis that puts the construction methods of the industry in check, carbon concrete emerges as an alternative that approaches the guidelines of sustainability.
For centuries and centuries we’ve built – and the diversity in our global built environment is a testament to that. The many different cultures around the globe have had different ways of building throughout history, adapting locally found materials to construct their structures. Today, in our globalized present, building materials are transported across the globe far from their origins, a situation that means two buildings on completely opposites sides of the world can be more or less identical.
In this powerful new visual from Spirit of Space, we are introduced to Ricardo Bofill’s headquarters ‘The Factory’ or La Fábrica, Taller de Arquitectura. Once a disused and decaying cement factory from the turn of the century, with 30 silos, machine rooms, and galleries, it is now a significant transformative project, satisfying the Architect's longing for space via adaptive reuse.
A haven in the urban sprawl, engulfed by a floury of palm, olive, and eucalyptus trees. Spirit of Space visits the former hive of activity, now a tranquil mid-city refuge, an immense contrast to the industrial grime that used to reside here. Moving picture and multi-sensory experience explore the Brutalist form; a concrete shell… a skeleton intertwined with nature itself.
The history of architecture shows that the use of raw materials has always been somewhat common, whether in ancient vernacular techniques or within the Brutalist movement, to name a few. It is evident that the language of a project is often linked to its material, as various sensations and the perception of space are directed by the aesthetic and physical quality of the given element. For this reason, we have gathered ten buildings that highlight the quality of their materials, whether to make a statement, reinterpret a technique from the past, or to re-signify the potency of some of these elements.
Concrete is not purely a structural element. As we demonstrated in an article about kitchen projects using concrete countertops, the material is gaining significant traction in the world of residential furnishings and fixtures. To further exemplify this, we have curated a list of several projects that use concrete benches to create beautiful moments inside and outside the home.
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.
Cactus Towers (Kaktustårnene), Copenhague. Image Cortesía de Sigfox España
Control of concrete strength and maturity in large-scale projects has traditionally been recorded and measured manually. Nowadays, there are new technologies that allow builders to melt sensors directly into the concrete, which –connected to a transmitter– show continuous data on the material's temperatures, sending this data wirelessly to the cloud platform. The software then automatically calculates maturity and strength based on historical data, so the concrete mix and strength development process can be followed from any device and in real-time.
These sensors, based on 0G technology from Sigfox –one of the main IoT (Internet of Things) operators worldwide– have facilitated the construction of one of the most innovative architectural projects in Europe, the Cactus Towers (Kaktustårnene) in Copenhagen, helping calculate the exact moment to remove the formwork that shapes its characteristic façade.
A masterpiece is often defined as the most remarkable work in an artist's career, one which highlights the height of their techniques and ideals. The Mona Lisa by Leonardo da Vinci; Michelangelo's Pietá; the Beatles' Sgt. Pepper's Lonely Hearts Club Band album. There are many examples, which are not always unanimously agreed upon. But what if what many consider to be the masterpiece was started by someone else, the credited creator didn't live to see its completion, and almost all of its documentation was destroyed? Catalan architect Antoni Gaudí and his world-famous Temple Expiatori de la Sagrada Família are examples of these complications. From a highly crafted stone construction to the most modern 3D printing techniques and high strength concrete, numerous technologies were and continue to be incorporated in the project's construction.
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