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Given the ongoing global urbanization and the rise of heat, flooding, and drought in cities, the integration of climate adaptive measures based on “ecosystem functions and services” becomes imperative in design. This study details the implementation process of a microclimate desi ...

Environmental Impact of Passive Smart Window Technologies

Evaluation Framework and Preliminary Results

This paper draws attention to the environmental impact of passive smart windows, a novel high-performance glazing technologies that can change their solar transmittance to control the amount of solar gain, thus reducing cooling energy demand. Despite the large influence of buildi ...
The environmental footprint of concrete is largely influenced by the binder. It is therefore of high interest to investigate the potential reuse of the binder retrieved by modern separation techniques. However, studies found that the recycled cement fraction (RCF) still contained ...
The clinker in cement largely determines the environmental footprint of concrete. Therefore, concrete recycling should focus on retrieving high-quality cementitious fractions to replace clinker. This requires a shift from current traditional recycling techniques towards innovativ ...

Nabehandeling essentieel voor kwaliteit beton

Opnieuw aandacht aan nabehandeling in Stutech-studierapport

De essentie van het goed nabehandelen van beton is al vaak besproken. Nabehandeling is noodzakelijk voor beton met een lange levensduur en een mooi uiterlijk. Een CROW-onderzoek naar betonaantasting in combinatie met mosgroei was aanleiding het thema nogmaals te bestuderen. Resul ...

Bioreceptive concrete

State of the art and potential benefits

Implementing nature in cities has great potential to improve urban liveability by providing ecosystem services, which can help mitigate heat stress, improve air quality, attenuate noise, and reduce rainwater run-off. However, widespread adoption of urban nature and green buildin ...
Potted plants have been reported to uptake VOCs and help “cleaning” the air. This paper presents the results of a laboratory study in which two species of plants (peace lily and Boston fern) and three kinds of substrates (expanded clay, soil, and activated carbon) were tested and ...
The urban heat island, is a serious threat for the urban well-being, and can be determined by the local energy balance. The surface energy balance, with respect to incoming radiative energy and subsequent partitioning into reflected energy (albedo), absorbed energy and further pa ...
Asphalt pavement consists of aggregates resulting in a waste material at end of its life. The aggregates can be reused as basic material for asphalt or cementitious binding agents. In both scenarios, the recycled aggregates should provide a good bond with the binder to achieve st ...
Kansen in de circulaire economie zijn er voor beton volop. Hoewel de winst het grootste is door hergebruik van gebouwen of constructies is het bekendste voorbeeld nog altijd het hergebruik van betonpuin als granulaat in nieuw beton. Maar dat laatste levert lang niet altijd een re ...
Active plant-based systems are emerging technologies that aim to improve indoor air quality (IAQ). A person’s olfactory system is able to recognize the perceived odor intensity of various materials relatively well, and in many cases, the nose seems to be a better perceiver of pol ...

Making bioreceptive concrete

Formulation and testing of bioreceptive concrete mixtures

Increased urbanisation will put an increasing strain on our green spaces, which is expected to have a significant effect on our physical and mental health, as well as the health of our ecosystems. As such it is important to integrate more green spaces in our urban fabric. One way ...
Bio-receptivity refers to the aptitude of a material to allow for the natural growth of small plant species on stony surfaces with minimum external influence. Despite the numerous associated environmental benefits, the growth of mosses and lichens on facades has always been viewe ...
A bioreceptive material allows for biological content (biofilms) to grow on it, without necessarily affecting the material itself. If a bioreceptive concrete could therefore be integrated into a building façade, it could lead to green façades that do not need additional technical ...
Examining the actual major environmental and social problems of the modern city, e.g., pollution, difficulties in food and water supply, poverty or homelessness, this study argues that insights from the field of ecology could offer structural solutions. In particular, specific ec ...
Bijna alle stedelijke klimatologische problemen zijn te herleiden naar het ontbreken van ecosysteemdiensten. Dat blijkt uit onderzoek van de TU Delft Faculteit Civiele Techniek, afdeling Materialen en Duurzaamheid. ‘Ook vonden we dit gebrek medeverantwoordelijk voor veel stedelij ...
Asset managers would benefit from knowing when to expect corrosion initiation in a particular reinforced concrete structure. However, accepted approaches to test existing structures for the remaining time to corrosion initiation are lacking. This paper proposes such an approach, ...
Groen in de stedelijke omgeving, zoals bomen en struiken, hebben een positieve werking op het welzijn van de mens. Zo blijken mensen te herstellen van stress en vermoeidheid en leidt groen tot minder gezondheidsklachten. Verschillende bladkleuren en geuren kunnen bijdragen aan ee ...

Botanical Biofiltration

Experimental Protocol and Method

Vegetation systems in combination with biofiltration processes are emerging processes that are expected to have beneficial effects on the improvement of indoor air quality (IAQ). Common indoor plants may provide a valuable strategy to avoid rising levels of indoor air pollution. ...
Owners of concrete structures would benefit from knowing when to expect corrosion initiation in a particular structure. Presently, no accepted procedures for testing existing structures for the remaining time to corrosion initiation are available. This paper proposes such a proce ...