THE ROLE OF NANO-PARTICLES IN SELF-HEALING PROCESS OF CEMENTITIOUS MATERIALS

Author(s): Maria Stefanidou (1), Eirini-Chrysanthi Tsardaka (1), Evangelia Tsampali (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 1133-1138
Total Pages: 6
Language : English

Abstract: The importance of producing materials that can heal their flaws is easily understood as the performance of those materials is high in terms of durable structures with low maintenance cost. The construction section, the last decades, is characterized by efforts to produce high performance rather than high strength materials. To that direction, self-healed concrete has an important role.
On the other hand, the addition of nano-particles in cement-based materials has been proved beneficiary in terms of pozzolanic reaction and early strength gain. The possibility to explore the role of nano-particles to heal the cracks in cement pastes is presented in this article. For that purpose, nano-SiO2 and nano-CaO were incorporated in cement pastes in different proportions. The produced pastes were tested in terms of mechanical, physical and
microstructure properties. The formation of secondary crystals into the nano-modified structure resulted in: porosity refinement, strength increase and the most important, dense structure by the presence of fully compatible products that reinforce the material’s structure.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00