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Formulation, use and durability of concrete with low clinker cements

English title Formulation, use and durability of concrete with low clinker cements
Applicant Flatt Robert J.
Number 154062
Funding scheme NRP 70 Energy Turnaround
Research institution Institut für Baustoffe ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Civil Engineering
Start/End 01.01.2015 - 31.12.2018
Approved amount 625'787.00
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All Disciplines (2)

Discipline
Civil Engineering
Material Sciences

Keywords (5)

corrosion; CO2; Supplementary Cementitious Materials; Steel; durability

Lay Summary (French)

Lead
La production de ciment représente la plus importante source industrielle d’émanation de CO2 et consomme également beaucoup d’énergie. Cela provient de la production du clinker, son composant principal. Ce projet vise à développer une nouvelle génération de ciment à basse teneur en clinker, utilisant des matériaux de substitution disponibles en Suisse. Nous étudierons des ciments composites contenant du calcaire et du schiste calciné à des taux élevés de substitution du clinker autorisés par une récente norme SIA. Nous chercherons à obtenir des résistances mécaniques suffisantes tout en garantissant une bonne durabilité en site, en particulier par rapport à la corrosion des armatures métalliques du béton.
Lay summary

Contenu et objectifs du travail de recherche

Contenu et objectifs du travail de recherche
Afin d’augmenter la réactivité de ces nouveaux ciments, nous ajouterons de faibles quantités d’alcalins. Dans une première partie, nous définirons les structures moléculaires d’adjuvants compatibles avec cette activation alcaline modérée et en étudierons les conséquences sur la réaction alcali-agrégat. Dans une deuxième partie, nous étudierons les conséquences sur la résistance à la carbonatation. Finalement, nous étudierons la cinétique de corrosion des armatures métalliques dans des bétons produits avec ces nouveaux ciments et soumis à la carbonatation.

Contexte scientifique et social du projet de recherche

Contexte scientifique et social du projet de recherche

Contexte scientifique et social du projet de recherche

Contexte scientifique et social du projet de recherche

Contexte scientifique et social du projet de recherche
Cette recherche doit définir comment formuler et utiliser des bétons contenant ces nouveaux ciments sans compromettre ni leur comportement mécanique ni leur durabilité. Elle doit également permettre de quantifier leurs cycles de vie  et leur impact environnemental, ce qui, en cas de succès, devrait grandement faciliter leur acceptation dans le marché suisse. Au vu des énormes quantités de ciment produites, ce projet peut donc rapidement avoir un impact majeur tant au niveau national qu’international.

 

Direct link to Lay Summary Last update: 26.10.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018
Stefanoni M., Angst U., Elsener B. (2019), First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018, Springer International Publishing, Cham.
Influence of calcium nitrate and sodium hydroxide on carbonation induced steel corrosion in concrete
Stefanoni Matteo, Angst Ueli, Elsener Bernhard (2019), Influence of calcium nitrate and sodium hydroxide on carbonation induced steel corrosion in concrete, in Corrosion, 1-10.
Electrochemistry and capillary condensation theory reveal the mechanism of corrosion in dense porous media
Stefanoni Matteo, Angst Ueli M., Elsener Bernhard (2018), Electrochemistry and capillary condensation theory reveal the mechanism of corrosion in dense porous media, in Scientific Reports, 8(1), 7407-7407.
Changes of microstructure and diffusivity in blended cement pastes exposed to natural carbonation
Soja Wioletta, Maraghechi Hamed, Georget Fabien, Scrivener Karen (2018), Changes of microstructure and diffusivity in blended cement pastes exposed to natural carbonation, in MATEC Web of Conferences, 199, 02009-02009.
Corrosion rate of carbon steel in carbonated concrete – A critical review
Stefanoni M., Angst U., Elsener B. (2018), Corrosion rate of carbon steel in carbonated concrete – A critical review, in Cement and Concrete Research, 103, 35-48.
The corrosion of steele in near-neutral porous media - corrosion rate in carbonated concrete
StefanoniMatteo (2018), The corrosion of steele in near-neutral porous media - corrosion rate in carbonated concrete, ETH Zürich, Zürich.
The kinetic competition between transport and oxidation of ferrous ions governs precipitation of corrosion products in carbonated concrete
Stefanoni Matteo, Zhang Zhidong, Angst Ueli, Elsener Bernhard (2018), The kinetic competition between transport and oxidation of ferrous ions governs precipitation of corrosion products in carbonated concrete, in RILEM Technical Letters, 3, 8-16.
A new setup for rapid durability screening of new blended cements
StefanoniMatteo, AngstUeli, ElsenerBernhard (2017), A new setup for rapid durability screening of new blended cements, in CIC 2017, Tromso, NorwayConcrete Innovation Conference, Tromso.
Compatible admixtures for low clinker cement mortars and concrete
Boscaro Federica, PalaciosMarta, KruspanPeter, FlattRobert J. (2017), Compatible admixtures for low clinker cement mortars and concrete, 10th ACI/RILEM Int. Conf. on Cementitious Materials and Alternative Binders for Sustainable Concrete, Montreal.
Corrosion rates in carbonated low clinker cements: are the new binders really sustainable?
StefanoniMatteo, AngstUeli (2017), Corrosion rates in carbonated low clinker cements: are the new binders really sustainable?, in XIV DBMC 2017, Ghent, BelgiumRILEM Publications S.a.r.l., Paris, France.
Evolution of micro structure and phase assemblage in blended cement pastes exposed to natural carbonation
Soja Wioletta, Avet François, Maraghechi Hamed, Durdzinski Pawel, Scrivener Karen (2017), Evolution of micro structure and phase assemblage in blended cement pastes exposed to natural carbonation, in XIV DBMC 2017, Ghent, BelgiumRILEM Publications S.a.r.l., Paris, France.
Influence of comb-type superplasticizers on the properties of low clinker cementitious materials
PalaciosMarta, NaskarNilanjon, BoscaroFederica, FlattRobert J. (2017), Influence of comb-type superplasticizers on the properties of low clinker cementitious materials, in XIV DBMC 2017, Ghent, BelgiumRILEM Publications S.a.r.l., Paris, France.
Microstructural and phase assemblage changes in naturally carbonated cement paste with supplementary cementitious materials (SCMs)
Soja Wioletta, Maraghechi Hamed, Scrivener Karen (2017), Microstructural and phase assemblage changes in naturally carbonated cement paste with supplementary cementitious materials (SCMs), in Internation Conference on Advances in Construction Materials and Systems, ChennaiInternation Conference on Advances in Construction Materials and Systems, Chennai 2017.
Relative importance of corrosion rate and exposure condition on the practical use of new environmentally friendly binders
StefanoniMatteo, AngstUeli, ElsenerBernhard (2017), Relative importance of corrosion rate and exposure condition on the practical use of new environmentally friendly binders, in CoMS 2017, Zadar, CroatiaUniversity of Zagreb, Zagreb.
Investigation of the carbonation profiles of limestone calcined clay cement (LC3)
SojaWioletta, AvetFrançois, MaraghechiHamed, ScrivenerKaren (2016), Investigation of the carbonation profiles of limestone calcined clay cement (LC3), in 35th Cement and Concrete Science Conference, Aberdeen35th Cement and Concrete Science Conference, Aberdeen.
Innovative Sample Design for Corrosion Rate Measurements in Carbonated Blended Concrete
Stefanoni Matteo, Angst Ueli, Elsener Bernhard (2015), Innovative Sample Design for Corrosion Rate Measurements in Carbonated Blended Concrete, 11th annual International Concrete Sustainability Conference (2016 ICSC), Washington DC.
Compatible superplasticizers for low clinker cementitious materials
BoscaroFederica, PalaciosMarta, KruspanPeter, FrunzLukas, FlattRobert J., Compatible superplasticizers for low clinker cementitious materials, in 15th Int. Congress on the Chemistry of Cement, Prague15th Int. Congress on the Chemistry of Cement, Prague.
Reproducibility of new low clinker concrete from the laboratory scale to the concrete plant
BoscaroFederica, JuillandPatrick, FrunzLukas, KruspanPeter, FlattRobert J., Reproducibility of new low clinker concrete from the laboratory scale to the concrete plant, in 1st Int. Conf. on Innovation in Low-carbon Cement & Concrete Technology, London1st Int. Conf. on Innovation in Low-carbon Cement & Concrete Technology, London.

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
11th annual International Concrete Sustainability Conference (2016 ICSC) Talk given at a conference Innovative Sample Design for Corrosion Rate Measurements in Carbonated Blended Concrete 17.05.2016 Washington DC, United States of America Flatt Robert J.; Stefanoni Matteo;


Associated projects

Number Title Start Funding scheme
170721 Enabling infrastructure for digital fabrication in concrete 01.01.2017 R'EQUIP
154062 Formulation, use and durability of concrete with low clinker cements 01.01.2015 NRP 70 Energy Turnaround
172481 Molecular control of cement hydration through tailored chemical admixtures 01.09.2017 Project funding (Div. I-III)

Abstract

The non-renewable energy associated with building materials accounts for a large part of the energy consumed in modern, energy efficient buildings and a closer examination shows that a large part of this “grey energy” comes from structural materials, in particular reinforced concrete. To reduce the energy demand associated with the building sector different solutions have been considered in the umbrella project “Concrete Solutions”. In our project (WP1), we work for solutions that can be immediately implemented. Our research is specifically targeted at elaborating a new generation of low clinker cements that can realistically be produced in Switzerland, considering the locally available raw materials. On the one hand, we facilitate the use of cement with low clinker content, on the other hand we secure, the durability of reinforced concrete made with high cement substitution. In a first part of this project, we will find admixture chemical structures compatible these new cements. In a second part, we will develop predictive models for carbonation of low clinker concretes. Finally, we will examine the ability of these new cements to protect steel reinforcement against corrosion. In summary, this project addresses the key scientific challenges to enable both short and long term solutions to reduce "grey energy" in the building sector and secure a sufficient energy strategy for Switzerland. It also specifically targets efficient knowledge transfer by involving key players in an important implementation phase.
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