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 1 |
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All Science Journal Classification (ASJC) codes
- Building and Construction
- Materials Science(all)
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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 journal › Article
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
N2 - 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.
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.
UR - http://www.scopus.com/inward/record.url?scp=85068119485&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068119485&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2019.105791
DO - 10.1016/j.cemconres.2019.105791
M3 - Article
AN - SCOPUS:85068119485
VL - 123
JO - Cement and Concrete Research
JF - Cement and Concrete Research
SN - 0008-8846
M1 - 105791
ER -