Abstract
Nano-structural changes of cement paste due to neutron and gamma irradiation are investigated by using small-angle neutron scattering (SANS). Disk specimens were prepared with the w/c ratios of 0.4 and 0.5, and they were exposed to the neutron fluence of 2.57 × 1014 n/cm2 and the gamma radiation does dosage of 38.4 Gy. Based on SANS data and a microstructural model of C-S-H gel, one observed that the size of C-S-H globules increased after irradiation. The change of C-S-H globule size may be associated with the change of surface morphology and chemical bonding of C-S-H, and thus further research on the irradiation effects on cement paste is necessary.
| Original language | English |
|---|---|
| Article number | 105791 |
| Journal | Cement and Concrete Research |
| Volume | 123 |
| DOIs | |
| Publication status | Published - 2019 Sep |
All Science Journal Classification (ASJC) codes
- Building and Construction
- Materials Science(all)
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Park, K., Chung, C. W., Lee, C. J., & Kwon, T. H. (2019). Investigation of irradiation effects on microstructure of cement paste using small-angle neutron scattering. Cement and Concrete Research, 123, [105791]. https://doi.org/10.1016/j.cemconres.2019.105791