Abstract
Lime based restoration mortars reinforced with multi-walled carbon nanotubes (MWCNTs) exhibit advanced mechanical strength, piezo-resistive properties and probably their main advantage is that they can be used as self-sensors for on-site health monitoring purposes of the restoration areas of traditional / historic structures. The present study assesses their economic viability via a comparison of innovative vs. conventional restoration treatments, based on Activity Based Cost (ABC) modeling and evaluation. ABC was applied to a hypothetical restoration scenario, which includes three restoration intervention ratio sub-cases (expected, optimistic and pessimistic), in relation to the structural part that will require re-treatment in more than 20 years life cycle time frame. The advantages of the application of the innovative material are portrayed in all investigated three-service life intervention sub-cases. In particular, the innovative approach method presents economic risk–benefit advantages from 1 % up to 14.6 % (depending on the sub-case) in comparison to the conventional approach.
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