FG Baustoffe und Bauchemie

10 Items

Recent Submissions
Characterization data of reference cement CEM I 42.5 R used for Priority Program DFG SPP 2005 “Opus Fluidum Futurum - Rheology of reactive, multiscale, multiphase construction materials”

Lu, Zichen ; Haist, Michael ; Ivanov, Dimitri ; Jakob, Cordula ; Jansen, Daniel ; Leinitz, Sarah ; Link, Julian ; Mechtcherine, Viktor ; Neubauer, Jürgen ; Plank, Johann ; Schmidt, Wolfram ; Schilde, Carsten ; Schröfl, Christof ; Sowoidnich, Thomas ; Stephan, Dietmar (2019)

A thorough characterization of starting materials is the precondition for further research, especially for cement, which contains various phases and presents quite a complex material for fundamental scientific investigation. In the paper at hand, the characterization data of the reference cement CEM I 42.5 R used within the priority program 2005 of the German Research Foundation (DFG SPP 2005) ...

Preparation and Characterization of Ultra-Lightweight Foamed Concrete Incorporating Lightweight Aggregates

Abd Elrahman, Mohamed ; El Madawy, Mohamed E. ; Chung, Sang-Yeop ; Sikora, Pawel ; Stephan, Dietmar (2019-04-06)

Increasing interest is nowadays being paid to improving the thermal insulation of buildings in order to save energy and reduce ecological problems. Foamed concrete has unique characteristics and considerable potential as a promising material in construction applications. It is produced with a wide range of dry densities, between 600 and 1600 kg/m3. However, at a low density below 500 kg/m3, it ...

Pore Characteristics and Their Effects on the Material Properties of Foamed Concrete Evaluated Using Micro-CT Images and Numerical Approaches

Chung, Sang-Yeop ; Lehmann, Christian ; Abd Elrahman, Mohamed ; Stephan, Dietmar (2017-05-26)

Foamed concrete contains numerous pores inside the material, and these pores are a significant factor determining the material characteristics. In particular, the pore distribution characteristics of foamed concrete significantly affect its thermal and mechanical properties. Therefore, an appropriate investigation is necessary for a more detailed understanding of foamed concrete. Here, a set of...

Effect of Different Gradings of Lightweight Aggregates on the Properties of Concrete

Chung, Sang-Yeop ; Abd Elrahman, Mohamed ; Stephan, Dietmar (2017-06-07)

null

Bitumen und Chemometrie

Weigel, Sandra (2018)

Im Rahmen dieser Arbeit konnte gezeigt werden, dass mithilfe der Fourier-Transformations-Infrarotspektroskopie und der Anwendung multivariater Analysemethoden eine umfassende Charakterisierung von Bitumenproben möglich ist. Als Grundlage dienten 90 Straßenbaubitumen unterschiedlicher Herkunft, Alterungsstufe und Sorte, die mithilfe verschiedener chemischer und physikalischer Verfahren untersuch...

The influence of nanomaterials on the thermal resistance of cement-based composites – a review

Pawel, Sikora ; Abd Elrahman, Mohamed ; Stephan, Dietmar (2018-06-26)

Exposure to elevated temperatures has detrimental effects on the properties of cementitious composites, leading to irreversible changes, up to total failure. Various methods have been used to suppress the deterioration of concrete under elevated temperature conditions. Recently, nanomaterials have been introduced as admixtures, which decrease the thermal degradation of cement-based composites a...

Evaluation of the effects of crushed and expanded waste glass aggregates on the material properties of lightweight concrete using image-based approaches

Chung, Sang-Yeop ; Abd Elrahman, Mohamed ; Sikora, Pawel ; Rucinska, Teresa ; Horszczaruk, Elzbieta ; Stephan, Dietmar (2017-11-25)

Recently, the recycling of waste glass has become a worldwide issue in the reduction of waste and energy consumption. Waste glass can be utilized in construction materials, and understanding its effects on material properties is crucial in developing advanced materials. In this study, recycled crushed and expanded glasses are used as lightweight aggregates for concrete, and their relation to th...

Leaching of inorganic and organic substances from construction materials and their ecotoxicological impact

Märkl, Veronika (2018)

In the last few years a growing environmental awareness in the field of construction materials can be observed. This has been, and continues to be, exacerbated since the Construction Products Regulations entered into force in 2013. In general construction products are in direct contact with the surrounding environment such as groundwater and soil. Especially grouting materials that often contai...

Alkalisch aktivierte Systeme auf Basis von Hüttensandmehlen

Tänzer, Ricarda (2018)

Alternative Bindemittel besitzen ökonomische und ökologische Vorteile sowie eine Vielzahl an positiven Eigenschaften (hoher Widerstand gegen aggressive Medien, hohe Druckfestigkeit, hoher Frostwiderstand, geringe beziehungsweise schnelle Abgabe von Reaktionswärme, geringe Porosität oder hohe Temperaturbeständigkeit). Die Eigenschaften hängen aber maßgeblich von der Art des Bindemitteltyps ab. F...

The 2015 Annual Meeting of SETAC German Language Branch in Zurich (7-10 September, 2015): ecotoxicology and environmental chemistry-from research to application

Werner, Inge ; Aldrich, Annette ; Becker, Benjamin ; Becker, Dennis ; Brinkmann, Markus ; Burkhardt, Michael ; Caspers, Norbert ; Campiche, Sophie ; Chèvre, Nathalie ; Düring, Rolf-Alexander ; Escher, Beate I. ; Fischer, Fabian ; Giebner, Sabrina ; Heye, Katharina ; Hollert, Henner ; Junghans, Marion ; Kienle, Cornelia ; Knauer, Katja ; Korkaric, Music ; Märkl, Veronika ; Muncke, Jane ; Oehlmann, Jörg ; Reifferscheid, Georg ; Rensch, Daniel ; Schäffer, Andreas ; Schiwy, Sabrina ; Schwarz, Simon ; Triebskorn, Rita ; Vermissen, Etiënne L. M. ; Wintgens, Thomas ; Zennegg, Markus (2016)

This report provides a brief review of the 20th annual meeting of the German Language Branch of the Society of Environmental Toxicology and Chemistry (SETAC GLB) held from September 7th to 10th 2015 at ETH (Swiss Technical University) in Zurich, Switzerland. The event was chaired by Inge Werner, Director of the Swiss Centre for Applied Ecotoxicology (Ecotox Centre) Eawag-EPFL, and organized by ...