Study of the role of different nanoparticles in lime pastes

Author(s): Eirini-Chrysanthi Tsardaka, Maria Stefanidou
Paper category: Proceedings
Book title: Proceedings of the 5th Historic Mortars Conference
Editor(s): José Ignacio Álvarez, José María Fernández, Íñigo Navarro, Adrián Durán, Rafael Sirera
ISBN: 978-2-35158-221-3
e-ISBN: 978-2-35158-222-0
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 144-154
Total Pages: 11
Language : English

Abstract: This study is an effort to evaluate the contribution of different nanoparticles in the properties of lime pastes. The use of nano-silica (NS), nano-alumina (NA) and nano-calcium oxide (NC) can contribute differently in physico-mechanical properties and microstructure. Nanoparticles enhance compressive strength and open porosity, whilst do not affect significantly the capillarity. Compressive strength at 28 days was improved by 52.4% and 90%, when 3% NS and 3% NA was incorporated, respectively. NC leads to denser structure, according to SEM observation. Moreover, it was proved that the different mechanisms of nanoparticles’ action lead to different carbonation degrees of nano-modified hydrated lime. The observation of microstructure clarified the physico-mechanical results and revealed nano-scale differences in lime pastes.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00