Do chemistry and rheology follow the same laboratory ageing trends in bitumen?

The ageing of bitumen has received great attention both from a chemical and rheological perspective due to its direct impact on asphalt performance. However, open questions with respect to the convergence of the synchronous ageing changes in rheology and chemistry of bitumen still exist. This paper addresses these alterations of chemistry and...

Rheological and Microstructural Assessment of Complex Bituminous Binders [PPT]

In the past years, the use of liquid additives as bitumen modifiers has increased to enhance or adjust the properties of bitumen for wide range of applications. Their molecular composition and mutual interaction result in a specific phase morphology in the binders. Hence, there is a need to evaluate the phase and interphase framework and...

Extended Producer Responsibility to Reduce Plastic Waste Pollution: An agent-based analysis for Indonesia

Research background<br/>Plastic debris in the environment consists primarily of plastic consumer waste. One of its leading causes is the lack of waste collection systems in developing countries. Actions need to be taken to overcome this issue, and Extended Producer Responsibility (EPR) seems to be an effective solution for encountering plastic...

Towards Designing a Method to Create Sticky Information Security Training for SMEs: Identifying Design Factors

The risk of being impacted by a cyberattack is high, because of more professional attacks. Thereby, cyber criminals are bypassing technological countermeasures through tricking users. Recently collected data during the SARS-CoV-2 pandemic demonstrate, that cyberattacks including social engineering are among the main threats, especially for Small...

Designing Data Governance Mechanisms for Data Marketplace Meta-Platforms

Data Marketplace Meta-platforms (DMMPs) federate the fragmented set of data marketplaces and are expected to become a pivotal instrument to realize a single European Data Market in 2030. However, one critical hindrance to foster the adoption of business data sharing via DMMPs is data providers' risk of losing control over data. Generally, the...

Exploring business change: The design of a digital tooling for business model exploration for the automotive ecosystem

Opportunities such as digital technologies are fundamentally reshaping businesses. Enterprises are moving from selling physical products and services, to providing digitally enabled services. Enterprises need to rethink their business models and how to adapt them to take advantage of these opportunities. How to adapt the existing business model...

Performance evaluation of the crumb rubber modified bitumen containing warm-mix additives

The crumb rubber modified bitumen (CRMB) has been utilized in pavement industries to mainly reduce the environmental impacts of the wasted tires by turning unwanted scrap tires into new bituminous materials. However, the relatively high viscosity compared to the conventional asphalt is the major drawback of the CRMB. The higher mixing and...

Effect of Mineral Fillers on Ageing of Bituminous Mixtures

Ageing of bitumen has been long-recognized as one of the major reasons responsible for the gradual deterioration of asphalt pavements. Age-hardening of the binder leads to the embrittlement of the overall asphalt mixture, which entails its increased susceptibility to traffic and environmental induced damage. As a result, high maintenance efforts...

A 32 mm × 32 mm × 22 mm monolithic LYSO: Ce detector with dual-sided digital photon counter readout for ultrahigh-performance TOF-PET and TOF-PET/MRI

New applications for positron emission tomography (PET) and combined PET/magnetic resonance imaging (MRI) are currently emerging, for example in the fields of neurological, breast, and pediatric imaging. Such applications require improved image quality, reduced dose, shorter scanning times, and more precise quantification. This can be...

Impact of maltene and asphaltene fraction on mechanical behavior and microstructure of bitumen

As a widely accepted concept, bitumen consists of four fractions that can be distinguished by their polarity. Highly polar asphaltene micelles are dispersed in a viscous phase of saturates, aromatics and resins (maltene phase). Different concentrations of asphaltenes in the bitumen result in a range of mechanical response properties. In an...

Hot Mix Asphalt Recycling: Practices and Principles

Hot mix asphalt recycling has become common practice all over the world since the 1970s because of the crisis in oil prices. In the Netherlands, hot recycling has advanced to such an extent that in most of the mixtures more than 50% of reclaimed asphalt (RA) is allowed. These mixtures with such a high RA content are produced in a batch plant to...

Towards an Accurate Stress Dependant Time & Frequency Domain VE Response Model for Bituminous Binders

Linear viscoelastic properties of bituminous binders for short loading times are analyzed using dynamic mechanical analysis methods. Dynamic Shear Rheometer (DSR) test with parallel plate (PP) configuration is widely used for this purpose. Due to the complex stress distribution over the cross-section of the test sample, application of this setup...

Grondwatereffecten aan de oppervlakte: Onderzoek naar effecten van stopzettingen grondwaterontrekking DSM Delft - Hoofdrapport

Sinds 1916 wordt in het centrum van Delft grondwater onttrokken. In de loop van de jaren is de hoeveelheid gestaag toegenomen. In 1966 is aan DSM Gist vergunning verleend om 13,5 m3 per jaar te ontrekken. De situatie is echter veranderd, DSM Gist heeft aangegeven het grondwater niet meer nodig te hebben. Delft de omliggende gemeenten en andere...