Abstract
This paper presents a pixel-based modeling approach of concrete which combines an experimental characterization of concrete and the Fast-Fourier transform simulations. High-resolution phase maps created from experimental characterization by micro X-ray fluorescence, energy dispersive X-ray analysis, and X-ray diffraction contain 9 different phases, including 22.17 vol.% of hydrated cement paste, 54.21 vol.% of minerals, and 23.62 vol.% of interfaces. These phases provide the input for determining the effective elastic properties, coupled with Fast-Fourier transform-based simulation. The simulation results show that the effective range of Young's modulus of concrete is comparable with the range of experimental values ∼37±4 GPa with the assumption of realistic properties of interfaces.
| Original language | English |
|---|---|
| Article number | 119500 |
| Journal | Construction and Building Materials |
| Volume | 257 |
| DOIs | |
| State | Published - Oct 10 2020 |
Funding
This work is supported by the US Department of Energy Office of Nuclear Energy Light Water Reactor Sustainability Program under contract number DE-AC05-00OR22725 and Effects of Irradiation on Bond Strength in Concrete Structures project (31310018S0021) of the US Nuclear Regulatory Commission. The authors would like to thank the Japan Concrete Aging Management Program-related researchers, Prof. I. Maruyama (Nagoya University), Dr. Takizawa (Mitsubishi Research Institute) and Dr. Kontani (Kajima Corp.) for sharing the unirradiated concrete specimens that made this research possible. This research was supported in part by an appointment to the Oak Ridge National Laboratory ASTRO Program, sponsored by the US Department of Energy and administered by the Oak Ridge Institute for Science and Education. This work is supported by the US Department of Energy Office of Nuclear Energy Light Water Reactor Sustainability Program under contract number DE-AC05-00OR22725 and Effects of Irradiation on Bond Strength in Concrete Structures project (31310018S0021) of the US Nuclear Regulatory Commission. The authors would like to thank the Japan Concrete Aging Management Program-related researchers, Prof. I. Maruyama (Nagoya University), Dr. Takizawa (Mitsubishi Research Institute) and Dr. Kontani (Kajima Corp.) for sharing the unirradiated concrete specimens that made this research possible. This research was supported in part by an appointment to the Oak Ridge National Laboratory ASTRO Program, sponsored by the US Department of Energy and administered by the Oak Ridge Institute for Science and Education. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).
Keywords
- Concrete elastic properties
- Energy-dispersive X-ray spectroscopy
- Fast-Fourier transform
- Image-based simulation
- Micro X-ray fluorescence