Education
02/2018 Degree of Philosophiae Doctor (PhD) in Structural Engineering Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Title of the PhD thesis: “Dolomite calcined clay composite cement – hydration and durability”, available at https://ntnuopen.ntnu.no
10/2014 Master of Science (M.Sc.) in Geosciences Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Title of the master thesis: “Influence of calcium hydroxides with different reactivities on the hydration of alite”
07/2012 Bachelor of Science (B.Sc.) in Geosciences Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Title of the bachelor thesis: “Influence of lithium carbonate and sodium polyphosphate on the hydration of CA2”
Working Experience
09/2020 - current Assistant Professor (TT) at TUM Tenure Track Assistant Professor for Mineral Construction Materials at the Technical University Munich
05/2018 – 06/2020 Post Doctoral Fellow at NTNU within the Horizon 2020 project “EnDurCrete” (www.endurcrete.eu) Task and Subtask leader in the hydration, durability and modelling related work packages
11/2017 – 04/2018 Researcher position at NTNU Involvement in ongoing research activities and responsibility of the cement chemistry laboratories
11/2014 – 10/2017 Industrial PhD position at the R&D Department of Norcem AS
As part of the Industrial PhD programme of the Norwegian Research Council. Project name: “Dolomite calcined clay composite cement” (NCR project number: 241637)
04/2001 - 10/2014 Student assistant at the Department of Applied Mineralogy (FAU Erlangen-Nürnberg)
Independent execution of laboratory experiments including XRD and calorimetry
08/2013 - 09/2013 Kerneos Aluminate Technologies, Technical and R&D Centre, Vaulx-Milieu, France
Participation in a research project, involving calorimetry, XRD, TGA, ICP-MS, pH, and conductivity measurements
09/2011 Internship at Wolfgang Endress, Lime and gravel quarry GmbH & Co KG
Working in the construction materials testing department, CaO/MgO content determination with acid/base titration, sieve analysis of aggregates
Scientific Journal Publications
Machner, A., Zajac, M., Ben Haha, M., Kjellsen, K.O., Geiker, M.R., De Weerdt, K., 2017: Portland metakaolin cement containing dolomite or limestone – Similarities and differences in phase assemblage and compressive strength, Construction and Building Materials, 157, 214-225.
Machner, A., Zajac, M., Ben Haha, M., Kjellsen, K.O., Geiker, M.R., De Weerdt, K., 2018: Limitations of the hydrotalcite formation in Portland composite cement pastes containing dolomite and metakaolin, Cement and Concrete Research, 105, 1-17.
Machner, A., Zajac, M., Ben Haha, M., Kjellsen, K.O., Geiker, M.R., De Weerdt, K., 2018: Stability of the hydrate phase assemblage in Portland composite cements containing dolomite and metakaolin after leaching, carbonation, and chloride exposure, Cement and Concrete Composites, 89, 89-106.
Machner, A., Zajac, M., Ben Haha, M., Kjellsen, K.O., Geiker, M.R., De Weerdt, K., 2018: Chloride-binding capacity of hydrotalcite in cement pastes containing dolomite and metakaolin, Cement and Concrete Research, 107, 163-181.
Machner, A., Hemstad, P., De Weerdt, K., 2018: Towards the Understanding of the pH Dependency of the Chloride Binding of Portland Cement Pastes, Nordic Concrete Research, 58 (1), 143-162.
Hemstad, P., Machner, A., De Weerdt, K., 2020: The effect of artificial leaching with HCl on chloride binding in ordinary Portland cement paste, Cement and Concrete Research, 130, 105976.
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Conference Contributions
23. – 28.02.2020
Gordon Research Conference on Advanced Materials for Sustainable Infrastructure Development Ventura, CA, USA
Conference presentation: “How does partial replacement of Portland cement with supplementary cementitious materials affect reinforcement corrosion?”
22.- 24.10.2019
Norsk Betongdag 2019 Trondheim, Norway
Conference presentation: “Utvikling av en ny miljøvennlig komposittsement for framtidens bestandige betongkonstruksjoner”
16. – 20.09.2019
15th International Congress on the Chemistry of Cement Prague, Czech Republic
Poster contribution: “Effect of the addition of dolomite on the stability of the hydrate phase assemblage in Portland composite cement pastes”
19. - 22.08.2018
Conference in honour of the Centennial of laboratory of construction materials and the 60th birthday of Prof. Karen Scrivener, Lausanne, Switzerland
Poster contribution: “The influence of metakaolin on the reaction of dolomite in Portland composite cement pastes“
18. - 20.10.2017
SINTEF – NTNU Concrete Information Day, Trondheim, Norway
Conference presentation: “Dolomitt i sement – hvordan påvirker det fasthet og bestandighet“
21. - 23.08.2017
23th Nordic Concrete Research Symposium, Aalborg, Denmark
Conference presentation: “Investigation of the products of the dolomite reaction in Portland cement pastes”
26. - 28.08.2015
35th Cement & Concrete Science Conference (CCSC35), Aberdeen, Scotland
Conference presentation: “Critical investigation of TGA sample preparation for composite cements”
07. - 09.10.2014
1st International Conference on the Chemistry of Construction Materials, Society of German Chemists e.V. (GDCh), Division of Chemistry of Construction Chemicals, Berlin, Germany
Poster contribution: “Influence of portlandite with different reactivity on alite hydration”
06. - 08.10.2013
Building chemistry congress of the Society of German Chemists e.V. (GDCh), Division of Chemistry of Construction Chemicals, Kassel, Germany
Poster contribution: “Influence of lithium carbonate and sodium polyphosphate on CA2 hydration”
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Scholarships and prizes
05/2013 - 05/2014
Germany Scholarship
Ilse and Dr. Alexander Mayer-Foundation
10/2019
Research prize of the Norwegian Concrete Association
25 000 NOK (approx. 2 500€) travel stipend for a scientific travel to the Gordon Research Conference on Advanced Materials for Sustainable Infrastructure Development (23.-28.02.2020, Ventura, CA, USA).
Major collaborations with other institutions
Prof. Dr. Klaartje De Weerdt and Prof. Dr. Mette Geiker
Department of structural Engineering, NTNU, Trondheim, Norway
Hydration and durability of cementitious materials
Dr. Mohsen Ben Haha, Dr. Maciej Zajac, Dr. Arnaud Muller
HeidelbergCement Global R&D, Germany
Hydration and durability of novel cementitious materials
Dr. Knut Kjellsen Norcem AS, Norway
Hydration and durability of novel cementitious materials
Dr. Ruben Snellings and Dr. Hadi Kazemi Kamyab VITO, Belgium
Hydration of novel cementitious materials
Prof. II Dr. Barbara Lothenbach
Empa, Switzerland and NTNU
Thermodynamic modelling
Dr. Gilles Plusquellec and Dr. Arezou Baba Ahmadi
RISE, Sweden
Interactions between C-S-H phase and chlorides
Prof. II Dr. Harald Justnes and Dr. Tobias Danner
Sintef, Norway
Hydration and durability of cementitious materials
Dr. Benoit Bary, Dr. Yushan Gu
CEA, France
Modelling of various deterioration mechanisms of concrete
Dr. Aljosa Sajna
ZAG, Slovenia
Performance testing of cementitious materials
