Investigation of irradiation effects on microstructure of cement paste using small-angle neutron scattering

Kyoungsoo Park, Chul Woo Chung, Chang Joon Lee, Tae Hyun Kwon

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1 Citation (Scopus)

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 languageEnglish
Article number105791
JournalCement and Concrete Research
Volume123
DOIs
Publication statusPublished - 2019 Sep

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning ( 2013M2B2A4041330 , 2017K1A3A1A67015884 ). The information presented in this paper is the sole opinion of the authors and does not necessarily reflect the views of the sponsoring agency.

Publisher Copyright:
© 2019 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Materials Science(all)

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