Asphalt suffers damage through the combination of infiltrating water and the ongoing burden of moving vehicles. It appears clear from the damage to the road surfaces that water has a negative effect on the material properties of the asphalt components and their binding.
Kringos succeeded in using her own computer program to model the deterioration in asphalt arising from the combined action of water infiltration and mechanical load. From the simulations it appears to be vitally important to measure the variables important for water damage, for all the individual asphalt components. These variables include the maximum moisture retentiveness, the moisture diffusion and the binding strength of the various asphalt components. Differences here appear to have an enormous influence on the degree of asphalt damage.
Kringos’ program can make a significant contribution to developing an improved and structured material selection which should lead to asphalt types which can last longer. In her research she applied her model particularly to American asphalt mixtures, and is currently busy adapting her results to the Dutch situation.
Kringos’ fundamental approach is entirely new in the asphalt world and in the future it will lead to better material selection, better maintenance planning and advanced asphalt mixture optimisation. Last year Kringos was honoured as the first European scientist to receive an annual PhD award from the Association of Asphalt Paving Technologists (AAPT) in the United States, for her pioneering work. She received her PhD with honors with this research on Monday June 4.
Frank Nuijens | alfa
Construction of practical quantum computers radically simplified
05.12.2016 | University of Sussex
UT professor develops algorithm to improve online mapping of disaster areas
29.11.2016 | University of Tennessee at Knoxville
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
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07.12.2016 | Health and Medicine
07.12.2016 | Life Sciences
07.12.2016 | Health and Medicine