Addressing safety and durability requirements of architectural heritage by developing functional conservation mortars

Author(s): Ioannis Karatasios, Zoi S. Metaxa, Stavros K. Kourkoulis, Nikolaos D. Alexopoulos, Vassilis Kilikoglou
Paper category: Proceedings
Book title: Proceedings of the 5th Historic Mortars Conference
Editor(s): José Ignacio Álvarez, José María Fernández, Íńigo 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: 307-318
Total Pages: 12
Language : English

Abstract: In this work the development of novel conservation mortars, reinforced at the nano-scale by the incorporation of carbon nanostructures was investigated. The above technology was tested for the first time in lime-pozzolan-cement ternary conservation mixtures, by incorporating multiwall carbon nanotubes (MWCNTs) in three different amounts: 0.05, 0.1 and 0.2 % wt. The electrical properties of the nanocomposites were studied. Additionally, their mechanical properties under compressive and flexural loading conditions were investigated, after curing for 28 days. The electrical resistance of the CNT-modified conservation mixtures was simultaneously recorded during monotonic compression tests and a correlation between mechanical loading and electrical measurements was established. The results clearly indicate the beneficial role of nano-reinforcement on the mechanical performance of nano-composite mixtures when compared to the reference ones. Moreover, the incorporation of CNTs modified the electrical performance of all the nanocomposites investigated, so as to follow the applied stress. Overall, this work highlights a new perspective on the design of conservation mortars, giving emphasis on the new functionalities and advantages that nanotechnology can provide to cultural heritage conservation.

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