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

Research output: Contribution to journalArticle

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 1

Fingerprint

Ointments
Neutron scattering
Cements
Irradiation
Microstructure
Neutrons
Gamma rays
Surface morphology
Gels

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Materials Science(all)

Cite this

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title = "Investigation of irradiation effects on microstructure of cement paste using small-angle neutron scattering",
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.",
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Investigation of irradiation effects on microstructure of cement paste using small-angle neutron scattering. / Park, Kyoungsoo; Chung, Chul Woo; Lee, Chang Joon; Kwon, Tae Hyun.

In: Cement and Concrete Research, Vol. 123, 105791, 01.09.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigation of irradiation effects on microstructure of cement paste using small-angle neutron scattering

AU - Park, Kyoungsoo

AU - Chung, Chul Woo

AU - Lee, Chang Joon

AU - Kwon, Tae Hyun

PY - 2019/9/1

Y1 - 2019/9/1

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AB - 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.

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