Getting it straight: bridges are becoming circular

Good vibrations? Not for bridges

Help from on high to solve earthly problems

Creating order in the chaos of sand and wind

Super asphalt lasts longer

In the mood for mud

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Counting grains of sand to understand coastal dunes

The Dutch coastline is continually changing. Coastal engineer Sierd de Vries is using small ventilators, home-made wind tunnels, drones, jet skis and laser scanners to gain an insight into the development of coastal areas and dune formation. He can often be found sitting close to the Sand Motor counting grains of sand. It’s all in aid of providing more accurate predictions of the long-term changes affecting the coastal landscape.

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Reading time: 5 min

Getting it straight: bridges are becoming circular

A large number of bridges in the Netherlands are scheduled for large-scale maintenance work or replacement. In order to minimise the effect on the environment and bring down costs researcher Wenjun Cao is working on a model to assess the potential for circularity of these bridges. This will help the Netherlands to achieve its aim of a fully Circular Economy (CE) by 2050.

Reading time: 5 min

Good vibrations? Not for bridges

Due to poor monitoring, many structures are not maintained properly or on time. This results in safety risks and high costs for overdue maintenance. Researcher Alice Cicirello is working on better design and monitoring tools to ensure the secure construction of structures to extend their service life.

Reading time: 4 min

Help from on high to save earthly problems

The ground beneath our feet is constantly moving and that can compromise the stability of buildings and infrastructure. Satellite data are helping Giorgia Giardina to chart the impact of subsurface activity on buildings in great detail so efficient measures to limit damage, cost and safety risks can be taken before it’s too late.

Reading time: 3 min

‘We are showing how we can take something as dramatic as Covid-19 and use it to develop world-class scientific research’

For years, Distinguished Professor Smart Urban Mobility Serge Hoogendoorn had been dreaming of a sensor network for research into traffic flows. The fact that it would happen on the TU Delft campus was never part of the dream. A perfect case of “never waste a good crisis”.

Understanding complex coral reef coasts

Fringing coral reefs provide a sheltered habitat for many sea animals and are a snorkelers’ paradise. But they also form a natural barrier which protects the shoreline and the area further inland. Experiments using 3D printed replicas of a coral are helping Marion Tissier gain an insight into how coral reefs influence and dampen wave energy.

Reading time: 5 min

Creating order in the chaos of sand and wind

The sky is a pretty hectic place but most of the tumultuous goings-on pass us by. In order to gain a better insight into the atmospheric processes taking place nearer the ground, Frans Liqui Lung developed a simulation model showing small-scale interactions between sand and wind The resulting Master’s thesis earned him the title of Best Graduate of the faculty of Civil engineering and Geosciences.

Reading time: 5 min

Super asphalt lasts longer

Asphalt concrete is a great material for road surfacing purposes but it’s not always the most sustainable of options. Sandra Erkens, professor of Pavement Engineering Practice, is looking for ways of predicting and extending the lifespan of both existing and new pavement materials. Epoxy asphalt may well hold the key to more durable road surfaces. The end of October should see the start of the construction of a trial section on a Noord-Holland road to put the new super asphalt through its paces.

Reading time: 4 min

What if we all share our rides?

With just a few clicks associate professor Oded Cats empties the streets of Amsterdam of all cars. In a simulation model, that is. ‘Now what if we ban Uber? Or allow only trams or bike sharing services?’ From his office in the CEG faculty building Cats is experimenting with a complex computer model creating a wealth of different virtual transport scenarios. He specifically looks into new modes of shared mobility, as they have brought a whole new dynamic to our cities.

Reading time: 4 min

A super model for all the glaciers on Earth

Glaciologist Harry Zekollari has climbed and researched many glaciers around the globe. At TU Delft he is currently working on the first ever multidimensional model to represent thousands of glaciers. The model will predict the response of glaciers to climate change more accurately and provide an insight into glacier melt worldwide.

Reading time: 4 min

Counting grains of sand to understand coastal dunes

The Dutch coastline is continually changing. Coastal engineer Sierd de Vries is using ventilators, wind tunnels, drones, jet skis and laser scanners to gain an insight into the development of coastal areas and dune formation. He can often be found sitting close to the Sand Motor counting grains of sand.

Reading time: 4 min

In the mood for mud

As a biologist and soil scientist Julia Gebert often finds herself getting her hands dirty. With mud, that is. In the past two years she has many times boarded a small boat to cruise among the huge container ships in the port of Hamburg while collecting mud samples.

Reading time: 6 min

Delft model protects wind turbines from risks posed by sea ice

Researcher Hayo Hendrikse (CEG) has developed a new model that gives accurate calculations of the effects of sea ice on offshore structures, such as wind turbines and oil and gas platforms. It turns out that ice causes less wear and tear in these structures than was previously assumed. Thanks to a successful partnership with Siemens Gamesa, Hendrikse's model is now being used in the construction of new offshore wind farms.

Reading time: 3 min

Moved by moving water

Newton’s law of universal gravitation is good news for the Dutch. Ice melting in Greenland and the Arctic glaciers has caused the Netherlands to rise by about 4 centimetres over the last century. Riccardo Riva has been studying the effects of moving water masses from one place to another.

Reading time: 4 min

Evacuating virtual buildings

Virtual Reality (VR) is not just about gaming or flight simulators. At TU Delft, PhD Yan Feng is investigating how it may help explain the behaviour of pedestrians. It took her just five months to teach herself how to create a complex virtual building. By then she had built an exact replica of her faculty building and invited real people to explore and evacuate it. So how did they find their way around?

Reading time: 3 min

Globally mapping air pollution

Satellites are the best available measuring instruments to detect man-made pollution worldwide. Atmospheric scientist Pieternel Levelt initiated OMI and TROPOMI, two of the most prestigious measuring instruments for the detailed mapping of harmful pollutants in the atmosphere. TROPOMI, the latest of the two, is capable of identifying and studying sources of pollution with even greater precision. The recently launched satellite will also be monitoring the main greenhouse gas emissions.

Reading time: 3 min

Looking into the earth with sound

A student is hitting a metal plate with a hammer while another is looking at a computer screen in a nearby tent. What (on earth) is happening here? ‘We’re studying the earth’s interior,’ PhD and geophysicist Myrna Staring says.

Reading time: 4 min

Into the mud to help nature

PhD candidate Lodewijk de Vet stood in the mud for weeks, in order to learn about organisms in the seabed and to take measurements. He wants to understand the Eastern and Western Scheldt better, so that he can help the ecology while simultaneously protecting our country from rising sea levels. His understanding of these areas served as a foundation for the Roggenplaat nourishments, that have since been executed.

Reading time: 4 min

Taking a piss? Or turning it into energy

Pee not only generates uncontrollable laughter in five-year-olds but energy as well. Niels van Linden is currently working on a concept to produce electricity from urban and industrial residual waters, which in turn will power the energy-neutral water treatment system he is hoping to develop.

Reading time: 3 min

From concrete waste to concrete buildings

Earth’s primary resources are finite. Human inventiveness, however, isn’t. At TU Delft’s laboratories, Francesco Di Maio is working on the recycling of concrete waste. Just like the Phoenix, the mythological bird that rises from its own ashes, Di Maio wants new concrete buildings to arise from their predecessors waste. He hopes his technologies will help to transform urban economies into self-sustaining loops.

Reading time: 4 min

Can sandbanks save mangrove forests?

Waking up early and going into the field on a small fishermen's boat, while the sun is rising behind volcano tops. That's how days started for PhD student Silke Tas during her two month fieldwork in Indonesia. The rest of her days were less idyllic: they consisted mostly of treading through the mud to get the right measurements for her research. She studies the workings of coastal sandbanks that give a chance to mangrove forests to restore, so that the forests can, in turn, prevent coast erosion.

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