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EURAXESS

MSCA-COFUND-CLEAR-Doc-PhD Position #CD22-19: Development of low carbon cement

13/10/2022

Job Information

Organisation/Company
Université Gustave Eiffel
Department
GERS-GIE
Research Field
Engineering
Engineering » Civil engineering
Engineering » Materials engineering
Researcher Profile
First Stage Researcher (R1)
Country
France
Application Deadline
Type of Contract
Temporary
Job Status
Full-time
Hours Per Week
35
Is the job funded through the EU Research Framework Programme?
H2020 / Marie Skłodowska-Curie Actions COFUND
Marie Curie Grant Agreement Number
101034248
Is the Job related to staff position within a Research Infrastructure?
No

Offer Description

Nowadays, building material industry faced to saving natural resources and mitigation to releases and nuisances. In that scope, cement industry is turned towards the development of news binders which could replace clinker, the main component of Portland cement, itself constituting the main component of concretes.

The cement demand has been increasing over the past few decades, mainly as a result of the population and economic growth. Countries and especially developing countries are rapidly building up industrial and transport infrastructures to cope with their economic development. It is estimated that the cement industry is responsible for 5 to 8% of the total anthropogenic CO2 emissions and 95% of this CO2 is emitted during the manufacturing process. In recent years, environmental legislation has become more drastic in order to reduce the amount of CO2 emission of cement production, and the cement industries have turned to research and development of new innovations that can reduce the environmental footprint of cement.

The use of Supplementary Cementitious Materials (SCMs) as a substitute for clinker is a well-known technology that can reduce the environmental cost of cement. Among the SCMs widely used today are fly ash, blast furnace slag and glass powder. However, blast furnace slag resources are not abundant enough to be used on a sustainable basis and the energetic transition rightly limits the availability of fly ash resources from coal combustion. In recent years, there has been a growing interest in the use of calcined clays as SCMs, particularly due to their high reactivity and availability. Indeed, the reserves of clays with potential for calcination are considerable and globally homogeneously distributed, making it a first-choice resource for use as an SCM. Numerous studies have been carried out in recent years on the reactivity of different types of calcined clays in cementitious system and metakaolin resulting from the calcination of kaolin appeared the most promising, whereas the calcined smectites and illites show much less encouraging results. In the same time the chemical treatment of some minerals like serpentine or spodumene to extract magnesium or lithium metals and up in a huge volume of amorphous silica that can be used as an SCM.

If the use of calcined clays as SCMs represents a strong interest in the mitigation of the CO2 release, their use at a global scale still requires the link between the clay composition of the natural sample, the calcination step and their reactivity in the cementitious media. Recent study demonstrates the strong difference between 1:1 and 2:1 clay type upon calcination and the distribution of 4-fold, 5-fold and 6-fold aluminum after calcination and their availability to produce C-S-H.

The objective is to compare silicon- and aluminum-based reactive systems and to bring new fundamental insights in the properties of SCMs in the production of green cement. The method will be based on the coupling multi-scale and multi-techniques approach assessing in detail, the cementitious phases microstructure in presence of additives and their evolution (Solid-state NMR, XRD, TGA, …) but also the link with mechanical properties, studying the poral structure of synthesized materials (SEM, porosimetry, indentation).

We are seeking a student with a master’s degree in one of the following topics: chemistry of materials, physico-chemistry of Materials or Materials Science. Strong skills in synthesis, structure and properties of materials, and strong interest for research work in the lab are necessary. The candidate will be competent in material characterization by using several techniques commonly used to characterize cement or clays. The student should be independent in his/her work and have a rigorous approach of scientific issues. Fluent English is necessary to publish his/her results in international publications.

References

G. Cardinaud, E. Roziere, O. Martinage, L. Barnes-Davin, M. Paris, D. Deneele. Calcined clay - Limestone cements: Hydration processes with high and low-grade kaolinite clays, Construction and Building Materials, 277, 122271. DOI: 10.1016/j.conbuildmat.2021.122271

M. Mejdi, W. Wilson, M. Saillio, T. Chaussadent, L. Divet, A .Tagnit-Hamou. Investigating the pozzolanic reaction of post-consumption glass powder and the role of portlandite in the formation of sodium-rich CSH, Cement and Concrete Research 123, 105790

V. Poussardin, M. Paris, A. Tagnit-Hamou, D. Deneele, Potential for calcination of a palygorskite-bearing argillaceous carbonate, Applied Clay Science. 198 (2020) 105846. DOI:10.1016/j.clay.2020.105846

V. Poussardin, M. Paris, W. Wilson, A. Tagnit-Hamou, D. Deneele, Self-reactivity of a calcined palygorskite-bearing marlstone for potential use as supplementary cementitious material, Applied Clay Science. 216 (2022) 106372. DOI:10.1016/j.clay.2021.106372

V. Poussardin, M. Paris, W. Wilson, A. Tagnit-Hamou, D. Deneele. Calcined marlstones as supplementary cementitious materials: a comparison between palygorskite and smectite bearing marlstones, Materials and structures, accepted

W. Wilson, L. Sorelli, A. Tagnit-Hamou. Unveiling micro-chemo-mechanical properties of C–(A)–S–H and other phases in blended-cement pastes, Cement and Concrete Research 107, 317-336

Requirements

Research Field
Engineering
Education Level
Bachelor Degree or equivalent
Research Field
Chemistry
Education Level
Bachelor Degree or equivalent
Skills/Qualifications
  • At the time of the deadline, applicants must be in possession or finalizing their Master’s degree or equivalent/postgraduate degree
  • At the time of recruitment, applicants must be in possession of their Master’s degree or equivalent/postgraduate degree which would formally entitle to embark on a doctorate
Specific Requirements

We are seeking a student with a master’s degree in one of the following topics: chemistry of materials, physico-chemistry of Materials or Materials Science. Strong skills in synthesis, structure and properties of materials, and strong interest for research work in the lab are necessary. The candidate will be competent in material characterization by using several techniques commonly used to characterize cement or clays. The student should be independent in his/her work and have a rigorous approach of scientific issues. Fluent English is necessary to publish his/her results in international publications.

Languages
FRENCH
Level
Basic
Languages
ENGLISH
Level
Excellent

Additional Information

Benefits
  • High-quality doctoral training rewarded by a PhD degree, delivered by Université Gustave Eiffel
  • Access to cutting-edge infrastructures for research & innovation
  • Appointment for a period of 36 months based on a salary of 2 700 € (gross salary per month)
  • Job contract under the French labour legislation in force, respecting health and safety, and social security: 35 hours per week contract, 25 days of annual leave per year
  • International mobility will be mandatory
  • An international environment supported by the adherence to the European Charter & Code
  • Access to dedicated CLEAR-Doc trainings with a strong interdisciplinary focus, together with a Career development Plan
Eligibility criteria

Applicants must fulfil the following eligibility criteria :

  • At the time of the deadline, applicants must be in possession or finalizing their Master’s degree or equivalent/postgraduate degree
  • At the time of recruitment, applicants must be in possession of their Master’s degree or equivalent/postgraduate degree which would formally entitle to embark on a doctorate
  • At the time of the deadline, applicants must be in the first four years (full-time equivalent research experience) of their research career (career breaks excluded) and not yet been awarded a doctoral degree. Career breaks refer to periods of time where the candidate was not active in research, regardless of his/her employment status (sick leave, maternity leave etc). Short stays such as holidays and/or compulsory national service are not taken into account
  • At the time of the deadline, applicants must fulfil the transnational mobility rule: incoming applicants must not have resided or carried out their main activity (work, studies, etc.) in France for more than 12 months in the 3 previous years
  • One application per call per year is allowed
  • Applicants must be available full-time to start the programme on schedule (November 1st 2023)
  • Application rules are enforced by the French doctoral system which specifies a standard duration of 3 years for a full-time PhD together with the MSCA standards and the OTM-R European rules as follows
  • Citizens of any nationality may apply to the programme
  • There is no age limit
Selection process
Additional comments
  • The first step before applying is contacting the PhD supervisor. You will not be able to apply without an acceptation letter from the PhD supervisor.
  • International mobility : International mobility planned at the University of Sherbrooke.
  • Please contact the PhD supervisor for any additional detail on job offer
  • There are no restrictions concerning the age, gender or nationality of the candidates Applicants with career breaks or variations in the chronological sequence of their career, with mobility experience or with interdisciplinary background or private sector experience are welcome to apply
  • Support service is available during every step of the application process by email: clear-doc@univ-eiffel.fr
Website for additional job details

Work Location(s)

Number of offers available
1
Company/Institute
Université Gustave Eiffel
Country
France
City
Bouguenais
Postal Code
44340
Street
Allée des Ponts et Chaussées
Geofield

Contact

City
Marne-La-Vallée
Website
Street
5, Boulevard Descartes
Postal Code
77454
E-Mail
dimitri.deneele@univ-eiffel.fr