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TU Berlin

Inhalt des Dokuments

Aktuelle Publikationen

2019

    • R. Firdous, D. Stephan: Natural pozzolan based geopolymers: A sustainable material. Proceeding of International Seminar on Sustainability, Economics and Safety ISSES 2019, 11 April - 12 April 2019, Szczecin, Poland, S. 11 – 12

    • R. Firdous, D. Stephan: Effect of silica modulus on the geopolymerization activity of natural pozzolans. Construction and Building Materials 219 (2019),  S. 31–43. Link

    • Y. Jin, D. Stephan: The unusual solidification process of alkali activated slag and its relationship with the glass structure of the slag. Cement and Concrete Research 121. S. 1-10.

    • E. John, D. Stephan, C. Lehmann: Accelerating cement hydration with C-S-H Seeds. ZKG Issue 4, S. 53-59.
    • S.-Y. Chung, M.A. Elrahman, J. S. Kim, T. S. Han, D. Stephan, P. Sikora: Comparison of lightweight aggregate and foamed concrete with the same density level using image-based characterizations. Construction and Building Materials 211, S. 988-999.
    • A. Mezhov, U. Pott, D. Stephan, K. Kovler: Influence of mechanical activation of fly ash in presence of polynaphthalene sulfonate superplasticizer on rheology and hydration kinetics of cement-fly ash pastes. Construction and Building Materials 210. S. 380-390.

    • Z. Lu, S. Liu, D. Stephan: Effects of cations on the yield stress of a highly concentrated suspension of glass beads with the addition of polycarboxylate superplasticizer. Colloids and Surfaces A: Physicochemical and Engineering Aspects.
    • F. Tajra, M.A. Elrahman, C. Lehmann, D. Stephan: Properties of lightweight concrete made with core-shell structured lightweight aggregate. Construction and Building Materials 205, S. 39-51.
    • P. Sikora, M.A. Elrahman, E. Horszczaruk, P. Brzozowski, D. Stephan: Incorporation of a magnetite powder as a cement additive for improving thermal resistance and gamma-ray shielding properties of cement-based composites. Construction and Building Materials 204, S. 113-121.

    • B. Wang, W. Yao, D. Stephan: Preparation of calcium silicate hydrate seeds by means of mechanochemical methods and its effect on the early hydration of cement. Advances in Mechanical Engineering 11 (4). Link
    • Y. Jin, D. Stephan, Z. Lu: The effects of calcium formate on the early hydration of alkali silicate activated slag. Materials and Structures 52 (2), S. 37.
    • J.-S. Kim, S.-Y. Chung, D. Stephan, T.-S. Han: Issues on characterization of cement paste microstructures from μ-CT and virtual experiment framework for evaluating mechanical properties. Construction and Building Materials 202, S. 82-102.

    • P. Sikora, K. Cendrowski, M. A. Elrahman, S.-Y. Chung, E. Mijowska, D. Stephan: The effects of seawater on the hydration, microstructure and strength development of Portland cement pastes incorporating colloidal microsilica. Applied Nanoscience 2019. S. 1-12. Link

    • M. A. Elrahman, M. E. El Madawy, S.-Y. Chung, P. Sikora, D. Stephan: Preparation and characterization of Ultra-Lightweight Foamed Concrete Incorporating Lightweight Aggregates. Applied Sciences 9 (7), S. 1447.

    • Y. Jin, D. Stephan: Colloidal interaction between vinylacetate ethylene latex stabilized by polyvinyl alcohol and portland cement. SN Applied Sciences 1 (1), S. 129.

    • T. Hirsch, C. Guguschev, A. Kwasniewski, S. Ganschow, D. Klimm: Investigation of the Nd2O3-Lu2O3-Sc2O3 phase diagram for the preparation of perovskite-type mixed crystals NdLu1-xScxO3. Journal of Crystal Growth 505, S. 38-43.
    • P. Sikora, M. A. Elrahman, S.-Y. Chung, K. Cendrowski, E. Mijowska, D. Stephan: Mechanical and microstructural properties of cement pastes containing carbon nanotubes and carbon nanotube-silica core-shell structures, exposed to elevated temperature. Cement and Concrete Composites 95, S. 193-204. Link

    2018

    • K. Shafiei, C. Lehmann, D. Stephan: Study of the binder hydration based on pretreated calcareous fly ash. Cement Wapno Beton 4 (2018) S. 277-289.
    • A. Mezhov, U. Pott, D. Stephan, K. Kovler: Aspects of activated fly ash: a comparative study of different mechanical treatment. SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete, 2018, pp. 105–110.
    • S. Weigel, D. Stephan: Relationships between the chemistry and the physical properties of bitumen. Road Materials and Pavement Design 19 (7), S. 1636-1650.
    • R. Firdous, D. Stephan, J. N. Y. Djobo: Natural pozzolan based geopolymers: A review on mechanical, microstructural and durability characteristics. Construction and Building Materials 190, S. 1251-1263. Link
    • S.-Y. Chung, M. Abd Elrahman, P. H. Kamm, D. Stephan: The influence of different concrete additions on the properties of lightweight concrete evaluated using experimental and numerical approaches. Construction and Building Materials 189, S. 314-322. Link
    • S. Weigel, D. Stephan: Differentiation of bitumen according to the refinery and ageing state based on FTIR spectroscopy and multivariate analysis methods. Materials and Structures 15 (5). S. 130.

    • T. Hirsch, D. Stephan: Modification of Properties of Cement at Early Age for Application in 3D Printing. Ibausil 2018. Buch 1, S. 1273-1280.

    • M. Abd Elrahman, S.-Y. Chung, P. Sikora, D. Stephan: Investigation on the effect of filler type on the properties of ultra-lightweight foamed concrete. Ibausil 2018. Buch 2, S. 241-249

    • S.-Y. Chung, M. Abd Elrahman, D. Stephan: The effect of homogenity of solid phases on the mechanical properties of foamed concrete evaluated using numerical approaches. Ibausil 2018. Buch 1, S. 1001-1008.

    • J. Binde, U. Ahlers, D. Stephan: C-S-H-Keime zur Erhöhung der Frühfestigkeit flugaschehaltiger Zemente. Ibausil 2018. Buch 1, S. 633-640.

    • E. John, D. Stephan: C-S-H-Keime zur Beschleunigung der Zementhydratation. Ibausil 2018. Buch 1, S. 323-334.

    • F. Tajra, M. Abd Elrahman, D. Stephan: Cold-bonded lightweight aggregate with core-shell structure: production, curing and utilization in concrete. Ibausil 2018. Buch 2, S. 279-288.
    • R. Firdous, D. Stephan, Y. Jin: Investigation of Rhenish and Bavarian Trass as Geopolymer Precursor. 20th International Conference of Building Materials - Ibausil 2018. Buch 2, S. 617-624.
    • S. Weigel, D. Stephan: Bitumen characterization with FTIR spectroscopy and multivariate evaluation: Prediction of various physical and chemical parameters. Energy and Fuels, 2018.
    • S. Weigel, D. Stephan: Relationships between the chemistry and the physical properties of bitumen, Road Materials and Pavement Design 19 (7), S. 1636-1650.

    • F. Tajra, M. Abd-Elrahman, S.-Y. Chung, D. Stephan: Performance Assessment of core-shell structured lightweight aggregate produced by cold bonding pelletization process, Construction and Building Materials 179 (2018), S. 220-231.

    • E. John, T. Matschei, D. Stephan: Nucleation seeding with calcium silicate hydrate- A review, Cement and Concrete Research. (2018)

    • S.-Y. Chung, M. Abd Elrahman, D. Stephan: Effects of expanded polystyrene (EPS) sizes and arrangements on the properties of lightweight concrete. Materials and Structures 51 (3), S. 57
    • S.-Y. Chung, P. Sikora, T.-S. Han, D. Stephan: Development of advanced insulating materials for innovative and sustainable structures, Proceedings of the ICSEFCM (2018) S. 7-14. 

    • E. John, D. Stephan: Properties of calcium silicate hydrates with varying stoichiometry, Proceedings of the ICSEFCM (2018) S. 15-22.

    • R. Firdous, D. Stephan: Properties of geopolymers based on volcanic ashes, Proceedings of the ICSEFCM (2018), S. 23-28.

    • T. Hirsch, D. Stephan: Vicat and ultrasonic velocity measurements on sulfate source varied Portland cements for 3D printing, Proceedings of the ICSEFCM (2018) S. 29-34.

    • F. Tajra, M. Abd Elrahman, D. Stephan: An experimental study of using core-shell structured lightweight aggregate in producing lightweight concrete, Proceedings of the ICSEFCM (2018) S. 35-40.

    • R. Firdous: Investigation of mechanical properties of concrete incorporating Pakistani sugarcane ash as secondary cementitious material, Proceedings of the ICSEFCM (2018) S. 41-45.

    • P. Sikora, M. Abd Elrahman, D. Stephan: The Influence of Nanomaterials on the Thermal Resistance of Cement-based Composites- A review. Nanomaterials 8 (465), S. 1-33.

    • T. Ballweg, H. v. Daake, D. Hanselmann, D. Stephan, K. Mandel, G. Sextl: Versatile triggered substance release systems via a highly flexible high throughput encapsulation technique, Applied Materials Today 11, S. 231-237. (2018), Link

    • Y. Jin, D. Stephan: Hydration kinetics of Portland cement in the presence of vinyl acetate ethylene latex stabilized with polyvinyl alcohol, Journal of Materials Science Volumen 53, Springer US, S. 7417-7430.

    • S.-Y. Chung, C. Lehmann, M. Abd Elrahman, D. Stephan: Microstructural characterization of foamed concrete with different densities using microscopic techniques. Cement Wapno Beton 23 (3), S. 216.
    • E. John, D. Stephan: The impact of the calcium to silicon ratio of CSH crystal seeds. Calcium-Silicate Hydrates Containing Aluminium: CASH II. Seite 15. Link
    • G. Land, D. Stephan: The effect of synthesis conditions on the efficiency of CSH seeds to accelerate cement hydration, Cement and Concrete Composites Band 87 (2018), S. 73-78.

    • S.-Y. Chung, M. Abd Elrahman, D. Stephan: Effect of different expanded aggregates on the lightweight concrete properties, Magazine of Concrete Research, Thomas Telford Ltd. S. 1-44.

    • C. Ehm, D. Stephan: Site resolved optical detection of photocatalysis on building materials, Journal of Photochemistry and Photobiology A: Chemistry (2018), Link
    • S. Weigel, D. Stephan: Bindemitteldesign für Asphaltstraßen. ISBN: 978-3-95606-397-3.
    • S.-Y. Chung, C. Lehmann, M. Abd Elrahman, D. Stephan: Charakterystyka mikrostruktury pianobetonu o różnych gęstościach przy zastosowaniu technik mikroskopowych. Cement Wapno Beton 21 (2018).
    • S. Weigel, A. Babiak, S. Czaja, D. Stephan: Nachhaltiger Hightech-Asphalt: Schadstoff- und lärmmindernd mit neuer Verarbeitung und Überwachung. Konferenz für Neue Mterialien im Bauwesen, 2018.
    • M. Sielaff, D. Stephan: Comparative study on acid resistance tests for cementitious material applied in sewer systems. Final Conference of RILEM TC 253-MCI: Microorganisms-Cementitious Materials Interactions. S. 153-162.

     

    2017

    • R. Firdous, U. Ilyas, A. Akram, M. Adnan: Evaluation of Mechanical Properties of Concrete Containing Silica Fume from a Local Source in Pakistan. Proceeding of the Pakistan Academy of Sciences: A Physical and Computational Sciences 54 (2), S. 119-125 (2017)

    • S.-Y. Chung, M. Abd Elrahmann, D. Stephan: The effects of anisotropic insulations with different spatial distributions on material properties of mortar specimens, International Journal of Concrete and Structures and Materials, 11 (2017), S. 573-584.

    • H. v. Daake, D. Stephan: Adsorption kinetics of retarding admixtures on cement with time controlled addition, Cement and Concrete Research, Volume 102, S.119-126. (2017)
    • S.-Y. Chung, M. Abd Elrahman, P. Sikora, T. Rucinska, E. Horszczaruk, D. Stephan: Evaluation of the effects of crushed and expanded waste glass aggregates on the material properties of lightweight concrete using image-based approaches, Materials, 10 (2017), 1354:1-16
    • V. Märkl, J. Stenzel, A. Reichert, D. Stephan: Investigation of the Leaching Behaviour of a Novel Cement-Polyurethane Hybrid Material for Waterproofing Purpose, Water, Air, & Soil Pollution, Springer 228, 350 (2017), Link
    • S. Weigel, D. Stephan: The prediction of bitumen properties based on FTIR and multivariate analysis methods Article reference, Fuel 208 (2017), S. 655-661
    • V. Märkl, S. Pflugmacher, A. Reichert, D. Stephan: Leaching of Polyurethane Systems for Waterproofing Purposes Whilest Curing, Water, Air, & Soil Pollution, Springer 228, 1 (2017), Link
      • V. Märkl, S. Pflugmacher, D. Stephan: Leaching of PCE-based Superplasticiser from Microfine Cement: a Chemical and Ecotoxicological Point of View, Water, Air, & Soil Pollution, Springer, 228, 1 (2017), Link
      • S. Weigel, D. Stephan: Relationships between the chemistry and the physical properties of bitumen, Road Materials and Pavement Design 2017
      • S.-Y. Chung, M. Abd Elrahman, D. Stephan: Effect of different gradings of lightweight aggregates on the properties of concrete, Applied Sciences 7, S. 585 (2017)
      • S.-Y. Chung, C. Lehmann, M. Abd Elrahman, D. Stephan: Pore characteristics and their effects on the material properties of foamed concrete evaluated using micro-CT images and numerical approaches, Applied Sciences 7,  S. 550 (2017)
      • R. Tänzer, Y. Jin, D. Stephan: Effect of the inherent alkalis of alkali activated slag on the risk of alkali silica reaction, Cement and Concrete Research, Volume 98, S. 82-90 (2017)

      • H. v. Daake, D. Stephan: Performance Enhancement of Polycondensate-Based Superplasticizers by Encapsulation, Chemical Engineering and Technology, 40 (3), S. 608-615 (2017)
      • B. Körber, D. Stephan, U. Wiens: WiTraBau: New materials developments for concrete pipes: Opportunities and obstacles for industrial application, Betonwerk und Fertigteil-Technik/Concrete Plant and Precast Technology, 83 (2), S. 36 (2017)
      • S. Weigel, D. Stephan: Modelling of rheological and ageing properties of bitumen based on its chemical structure, Materials and Structures, 50:83 (2017)
      • V. Märkl, S. Pflugmacher, D. Stephan: Effect of leached cement paste samples with different superplasticiser content on germination and initial root growth of white mustard (Sinapis alba) and cress (Lepidium sativum), Water, Air, & Soil Pollution, Springer Nature, 228 (2017) Link
      • R. Tänzer, Y. Jin, D. Stephan: Alkali activated slag binder: effect of cations from silicate activators, Materials and Structures 50:91 (2017), Link

       

      2016

      • V. Märkl, D. Stephan: Influence of cement paste eluates on primary root growth of cress (Lipidium Sativum) and white mustard (Sinapis Alba), Gesellschaft Deutscher Chemiker e.V. (ed) 2nd International Conference on the Chemistry of Construction Materials, Gesellschaft Dt. Chemiker, Frankfurt am Main (2016), Link
      • N. Schneider, D. Stephan: Studying the hydration of a retarded suspension of ground granulated blast-furnace slag after reactivation, Materials 9(11): 933 (2016), Link

      • N. Schneider, D. Stephan: Performance increase by a combination of retarder and activator in a suspension of ground granulated blast-furnace slag, Gesellschaft Deutscher Chemiker e.V. (ed) 2nd International Conference on the Chemistry of Construction Materials, Gesellschaft Dt. Chemiker, Frankfurt am Main (2016), S. 256–259

      • N. Schneider, D. Stephan: The effect of D-gluconic acid as a retarder of ground granulated blast-furnace slag pastes, Construction and Building Materials 123 (2016), Link

      • H. v. Daake: Möglichkeiten zur Optimierung der Wirkungsweise bauchemischer Zusatzmittel durch Mechanismen der kontrollierten Werkstofffreisetzung, kassel university press, Kassel (2016), Link
      • S.-Y. Chung, M.A. Elrahman, D. Stephan, P.H. Kamm: Investigation of characteristics and responses of insulating cement paste specimens with Aer solids using X-ray micro-computed tomography, Construction and Building Materials, 118 (2016), S. 204-215
      • S.-Y. Chung, M.A. Elrahman, D. Stephan: Investigation of the effects of anisotropic pores on material properties of insulating concrete using computed tomography and probabilistic methods, Energy and Buildings, 125 (2016), S. 122-129

      • N. Schneider, D. Stephan: Reactivation of a Retarded Suspension of Ground Granulated Blast-Furnace Slag, Materials Volume 9, Issue 3, 2016, Link
      • H. v. Daake, T. Ballweg, D. Stephan: Controlled Release of Construction Chemicals by Encapsulation. Journal of Encapsulation and Adsorption Science 6 (2016), S. 9–21., Link
      • H. v. Daake, D. Stephan: Setting of cement with controlled superplasticizer addition monitored by ultrasonic measurements and calorimetry, Cement and Concrete Composites, Volume 66, 2016, S. 24-37, Link

      • H. v. Daake, R. Stascheit, D. Stephan: Matrix based encapsulation of construction chemicals using high shear agglomeration, Chemical Engineering and Technology (2016), DOI: 10.1002/ceat.201500598, Link

      • H. v. Daake, D. Stephan: Impact of retarders by controlled addition on the setting, early hydration and microstructural development of different cements, Magazine of Concrete Research, 2016, DOI: 10.1680/jmacr.15.00374, Link
      • H. v. Daake, D. Stephan: Combination of isothermal heat flow calorimetry and in situ ultrasonic testing to monitor the early cement hydration in presence of chemical admixtures. in: W. Schmidt, N. S. Msinjili: 2nd International Conference on Advances in Cement and Concrete Technology in Africa, 2016, S. 171–180. Link

      • V. Märkl, D. Stephan: Release Behaviour of Major Elements and Superplasticiser from Cement Suspensions, Water, Air, & Soil Pollution (Nr. 227), Springer, 2016
      • S.-Y. Chung, D. Stephan, M.A. Elrahman, T.-S. Han: Effects of anisotropic voids on thermal properties of insulating media investigated using 3D printed samples, Construction and Building Materials, 111 (2016), S.529-542. 

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