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Sujet de stage / Master 2 Internship

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smart concretes incorporating carbon nanotubes

Contact: PINAULT Mathieu, , mathieu.pinault@cea.fr, +33 1 69 08 91 87
The subject of the proposed internship is in the context of the development of 'smart' concretes, with the objective of developing methods for the preparation of original grades of concretes incorporating multi-layer carbon nanotubes, and then analyzing these materials in order to achieve first measurements of electrical and mechanical properties of the materials developed.
Possibility of continuation in PhD: Non
Deadline for application:19/06/2019

Full description:
The development of smart materials, born in the early 80's in the aerospace sector, today concerns all areas of activity, including concretes that become adaptive and evolving. "Smart concrete" is a concrete whose functions are written in the material. They allow it to behave like a sensor (signal detection) or as an actuator (action on their environment). They are thus able to modify their physical properties in response to an internal or external stress. These properties are obtained thanks to the incorporation of new elements: classically metal or polypropylene wires, or even carbon nanotubes, nanoparticles, ...
The subject of the proposed internship fits into this context and relies on the skills of two laboratories: LECBA, which has expertise in the preparation and study of concrete properties, and LEDNA whose expertise is based on knowledge -to do the synthesis and characterization of carbon nanotubes and composite materials integrating nanotubes. Its objective is to develop methods for the preparation of original grades of concretes integrating multi-layer carbon nanotubes, then to analyze these materials in order to determine the distribution of the nanotubes, the density, the viscosity, the setting time (needle Vicat, TGA). First measurements of electrical and mechanical properties will be carried out during this internship. The adaptation of mechanical characterization techniques (Impluse Excitation Technique, nanoindentation, conventional compression) to unusual small specimens will have to be taken into account.
In parallel with this experimental work, a bibliographic research work will be conducted in order to identify the latest advances in the field and to consider the prospects of applications.
Tutor of the internship


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