Title:
Multiscale Characterization and Modeling of Electron Kinetics in Concrete Engineered with Multidimensional Carbon-Based Nanomaterial Networks
Author(s):
Danoglidis
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/29/2023
Abstract:
In this presentation, we demonstrate an effective control and tuning of the carrier transport properties to impart new functionalities in concrete with functionalized 1D carbon nano-tubes (CNTs), nanofibers (CNFs) and 2D graphene nanoplatelets (GNPs) using nanoscale experiment-modelling coupled methods. We measured for the first time the electron mobili-ty and dielectric permittivity at the sub-10 nm interfaces between nanomaterials and C-S-H; and 5 – 50 µm Interfacial Transition Zone (ITZ) using Tunneling Electron Atomic Force Microscopy system (TUNA-AFM) with nanometer current signal. The readings were integrated as input data in a micromechanical modelling for the determination of the bulk dielectric permittivity and interfacial resistance of nanocomposites. The results were used for the assessment of engineered concrete’s new functionalities such as strain sensing capacity at the elastic and post-elastic stages, and electrical energy storage and dissipation efficiency.