D
Dietmar Stephan
Researcher at Technical University of Berlin
Publications - 182
Citations - 4534
Dietmar Stephan is an academic researcher from Technical University of Berlin. The author has contributed to research in topics: Cement & Compressive strength. The author has an hindex of 27, co-authored 147 publications receiving 2790 citations. Previous affiliations of Dietmar Stephan include University of Kassel & Technische Universität München.
Papers
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Photodegradation of rhodamine B in aqueous solution via SiO2@TiO2 nano-spheres
Patrick Wilhelm,Dietmar Stephan +1 more
TL;DR: Titania coated silica spheres (SiO 2 @TiO 2 ) prepared by heterocoagulation of silica and titania nano-particles were investigated as catalyst in the photodegradation of rhodamine B (RB) in aqueous solution.
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The influence of nano-silica on the hydration of ordinary Portland cement
Gerrit Land,Dietmar Stephan +1 more
TL;DR: In this article, nano-silica particles of different sizes and specific surface areas were synthesized and the acceleration of cement hydration clearly correlates with the total surface size of the added particles, which was varied by either using smaller particles or higher concentration of particles in the cement lime.
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Controlling cement hydration with nanoparticles
Gerrit Land,Dietmar Stephan +1 more
TL;DR: In this paper, the effect of these particles on the cement hydration was followed by heat flow calorimetry to evaluate their acceleration potential as a function of the particles material, particles size and their percentage in the cement paste.
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Nucleation seeding with calcium silicate hydrate – A review
TL;DR: In this article, the effects of calcium silicate hydrate are reviewed in detail, with a focus on synthesis, and their influence on the hydration mechanism and the development of mechanical properties, such as early and long-term compressive strength and porosity.
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Natural pozzolan based geopolymers: A review on mechanical, microstructural and durability characteristics
TL;DR: In this article, a review paper summarizes the mechanical and durability characteristics as well as the microstructural properties of natural pozzolan based geopolymers and their potential as binding material.