Architecture
Bonded Concrete
Even the Romans valued the properties of concrete. The popular building material has improved over time and continues to develop further. Into UHPC—ultra-high-performance concrete—which is characterised by its extremely high density and compression strength. Its special strength, however, has not yet been sufficiently studied in practical applications. It's time for science to put the pressure on: in two projects, researchers at the Institut für Massivbau (Institute for Solid Construction) at RWTH Aachen are testing the load-bearing performance of the ultra-high-performance concrete in composite girders and in prestressed concrete girders. Does the UHPC deliver what it promises?
Textile Concrete
Many modern buildings are made of steel reinforced concrete. However, after about 100 years it starts to crumble as the popular combination of concrete and steel corrodes. As a result, millions of buildings will require expensive repair work in the coming decades. New solutions are called for. One such solution is textile reinforced concrete. It is lighter, less expensive and, most importantly, stronger and more versatile. We take a journey into the world of modern building materials.
The City of 5 Million
Worldwide, the number of cities with a population of over five million is steadily increasing. What is life like for the inhabitants of these megacities? How do people cater for their daily needs? Such cities are almost impossible for the state and official authorities to govern. To compensate for this, forms of self-organisation arise to enable life to continue in such tightly packed communities. Taking Delhi, Dhaka and the Pearl River Delta as examples, Frauke Kraas takes a first-hand look at living conditions in megacities.
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