As the industry shifts towards a more sustainable model for construction, transparency becomes increasingly important. With a growing emphasis on building greener, architects, planners and other professionals want to make sure that the materials they are using have a minimal impact on the planet. Environmental Product Declarations (EPDs) are an important tool to accurately measure that impact.
In January, Holcim Germany became the first company in Europe to publish EPDs for its entire cement portfolio. It is also the first German company to provide its customers with product-specific ready-mix concrete EPDs.
The precast and prefabricated elements made of concrete (such as slabs, pillars, beams and walls) are part of the constructive process known as modular construction. A construction methodology carried out in stages, based on the standardization of the parts that make up the building, with its modules produced on an assembly line, transported and assembled to shape the architecture.
From Taiwan to the Netherlands to Uruguay, Jakub Sawosko has extensively been photographing concrete architecture all over the world and displaying them on Instagram as @sh_sh_welt.
After living surrounded and fascinated by post-war concrete architecture in Europe in his early years, Sawosko moved to Taiwan where he eventually realized that Modernism had heavily influenced Taiwan as well. "I felt that [Taiwan's distinctive style of architecture] deserved more recognition", explains Jakub in conversation with ArchDaily via Instagram.
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.
A large-area elemental map (Calcium: red, Silicon: blue, Aluminum: green) of a 2 cm fragment of ancient Roman concrete (right) collected from the archaeological site of Privernum, Italy (left). A calcium-rich lime clast (in red), which is responsible for the unique self-healing properties in this ancient material, is clearly visible in the lower region of the image. Image Cortesia de the researchers (MIT)
Roman aqueducts built more than 2,000 years ago are still in operation. The Pantheon in Rome remains the largest dome made of unreinforced concrete in the world, with a diameter of 43.3 meters. At the same time, it is not unusual to see structures less than a decade old collapsing. Understanding why Roman structures remain standing has been the subject of studies by many researchers around the world. Why, even in hostile environments such as coastlines or seismic zones, do these structures remain intact? Is there some miraculous material or method that has been lost in history? An international group of researchers led by the Massachusetts Institute of Technology (MIT) has shed light on these questions, discovering that these structures had a previously overlooked capacity for self-healing, and the potentially huge environmental impact it can have, to create more durable concrete structures in the future.
Artists are frequently inspired by land — be it painter Robert S. Duncanson’s renditions of American landscapes, or William Kentridge’s subversions of colonial-era British paintings depicting African vistas. Some artists, though, have preferred to work directly with the land, creating structures that sit on landscapes, or carving into the land itself. This art style — formally termed as Land Art — gained prominence in 1960s and 70s United States, in the context of the rise of the environmental movement amidst civil rights and antiwar protests, and as artists looked to separate themselves from the art market.
Fundamental for the development of large metropolises as we know them today, cement is a material used historically, whose technological advances have revolutionized construction technique and technology of civil construction, enabling the verticalization of construction and the densification of urban centers. Cement, both added to water and sand to make mortar and combined with steel and aggregate to form concrete, performs different functions in a work, from structure to finish.
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.
Stairs are often an inevitable part of a building's DNA. Nowadays, staircases not only serve the function of practicality but are also a showcase of their own kind, especially if paired with a color that is guaranteed to grab attention. Among warm colors, red is considered to be the most powerful one. On one hand, it evokes feelings of joy and energy, and on the other, feelings of alertness and danger. Red can stimulate a whole range of emotions. Therefore, its usage should be attentive, delicate, and thought out.
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.
As a response to global challenges such as climate change, discrimination, and physical vulnerability, designers and engineers from across the world have developed innovative construction materials that put the human wellbeing first in urban, architecture, and interior projects.
Michael Heizer’s immense sculpture the City, an ambitious artwork of an extraordinary size, will begin to accept visits from the public beginning September 2, 2022. The announcement was made by the Triple Aught Foundation, the not-for-profit organization responsible for managing the long-term oversight and maintenance of Michael Heizer’s immense sculpture. The artwork, a mile and a half long and nearly half a mile wide, is located in a remote stretch of the high Nevada desert. Work on the structure began in 1972 when the artist was 27 years old.
Concrete can be found in almost any type of construction around the world. But how is it made?
During manufacturing, once in contact with water, concrete’s main ingredient, cement, binds to any aggregates present and goes through a number of complex chemical reactions. That eventually turns it into concrete, a material that is very durable and easy to work with. Despite this reliable durability, concrete can go through a number of internal processes that can lead to serious structural concerns. One of these is alkali-silica reaction (ASR), which can cause cracks in concrete and even put structures in danger of collapse over time.
Most of us use stairways every day, but few times do we stop to contemplate their design or put much thought into their function. With their steps, treads and railing, they are easily one of the most fundamental architectural elements in any home. Apart from providing a safe, simple and easy access from one floor to another, it is through staircases that architects create unique spatial forms and strong visuals. From afar, one can observe people moving up and down repeatedly; from within, the user is treated to new angles and ways to perceive a space. Therefore, good staircases are more than just means of vertical circulation. Through their might and scale, they can become the protagonist of a space – a design focal point that rises to the level of art. In this article, we present their versatile characteristics and material qualities through a selection of inspiring examples, all of which can be found in Architonic's 'Staircases' section.
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.
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.
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