NSUF 17-1066: Changes on viscoelastic behavior, morphology and chemical structure of gamma irradiated calcium silicate hydrates to 1.94 MGy with respect to non-irradiated samples
The proposed project objectives are to study the changes in viscoelastic behavior and chemical structure and morphology of calcium silicate hydrates after gamma irradiation. The chemical structural changes will be studied with x-ray diffraction. Morphology and compositional changes will be examined with TEM. Viscoelastic properties will be obtained through stress relaxation nanoindentation experiments. Calcium silicate hydrates are considered the glue of cement and hence are important for the stability of the concrete bio-shield in nuclear power plants. The impact of high gamma doses on the viscoelastic properties of calcium silicate hydrates is not known. These experiments will be a first approach to study this impact at a medium dose (1.94 MGy) to inform mechanical models that predict the degradation of cement and concrete with irradiation. The expected scientific outcome lies in the understanding of possible changes on viscous behavior of cement paste after irradiation, which have some implications in irradiation damage predictive numerical models.The samples will be available in 4 months, and the experiments will be finished in 2 sessions of 5 days each.
Дополнительная информация
| Поле | Величина |
|---|---|
| Awarded Institution | Oak Ridge National Laboratory |
| Embargo End Date | 2026-02-27 |
| Facility Tech Lead | Kory Linton |
| NSUF Call | FY 2017 RTE 3rd Call |
| PI | Elena Tajuelo Rodriguez |
| Project Member | Ms. Elena Tajuelo Rodriguez, R&D Staff Member - Oak Ridge National Laboratory (https://orcid.org/0000-0003-2152-0067) |
| Project Member | William Hunnicutt - University of Illinois |
| Project Member | Paramita Mondal - University of Illinois |
| Project Member | Yann Le Pape - Oak Ridge National Laboratory |
| Project Notes | Awarded on 09/20/2017 |
| Project Type | RTE |
| Publication | Elastic, Viscous and Creep response of Gamma irradiated C-S-H Elena Tajuelo Rodriguez, William Hunnicutt, Paramita Mondal, Yann Le Pape Triennial International Symposium of Nanotechnology in construction 2018-12-02 - 2018-12-05 |
| Publication | Assessing the effects of gamma irradiation in concrete Elena Tajuelo Rodriguez, William Hunnicutt, Paramita Mondal, Yann Le Pape American Nuclear Society meeting 2018-06-17 - 2018-06-21 |
| Publication | Assessing the effects of gamma irradiation in concrete Elena Tajuelo Rodriguez, William Hunnicutt, Paramita Mondal, Yann Le Pape Transactions of the American Nuclear Society 118 2018-06-17 http://ansannual.org/wp-content/2018/Data/pdfs/651-24992.pdf |
| Publication | Effect of gamma irradiation on creep properties of cement paste analogues Elena Tajuelo Rodriguez 19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019-08-18 - 2019-08-22 |
| Publication | The effect of gamma irradiation on C-S-H Elena Tajuelo Rodriguez ICIC Virtual Workshop on Effects of gamma irradiation of cement systems 2020-11-20 - 2020-11-20 |
| Publication | What does irradiation do to concrete? Insights on effects at the paste and aggregate levels Elena Tajuelo Rodriguez EMI 2022-05-31 - 2022-06-03 |
| Publication | Irradiation impact in concrete: Gamma effects on cement paste constituents (calcium silicate hydrates) and neutron effects on minerals present in aggregates Elena Tajuelo Rodriguez Goldschmidt 2022-07-10 - 2022-07-16 |
| Publication | Examination of Gamma-irradiated Calcium Silicate Hydrates. Part II: Mechanical Properties Elena Tajuelo Rodriguez Journal of Advanced Concrete Technology 18 2020-10-09 https://www.researchgate.net/publication/346144688_Examination_of_Gamma-irradiated_Calcium_Silicate_Hydrates_Part_II_Mechanical_Properties |
| Publication | Ultra-high gamma irradiation of calcium silicate hydrates: Impact on mechanical properties, nanostructure, and atomic environments Elena Tajuelo Rodriguez Cement and Concrete Research 158 2022-05-28 https://doi.org/10.1016/j.cemconres.2022.106855 |
| RTE Number | 1066 |