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

doi:10.1016/j.cemconres.2019.105791

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

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

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	https://doi.org/10.1016/j.cemconres.2019.105791
Publication status	Published - 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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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.",

author = "Kyoungsoo Park and Chung, {Chul Woo} and Lee, {Chang Joon} and Kwon, {Tae Hyun}",

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: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = sep,

doi = "10.1016/j.cemconres.2019.105791",

language = "English",

volume = "123",

journal = "Cement and Concrete Research",

issn = "0008-8846",

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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

N1 - 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

PY - 2019/9

Y1 - 2019/9

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.

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JO - Cement and Concrete Research

JF - Cement and Concrete Research

SN - 0008-8846

M1 - 105791

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

Abstract

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