BROWSE

Related Researcher

Author's Photo

Pyo, Sukhoon
IMCT (Innovative Materials for Construction and Transportation) Lab
Research Interests

ITEM VIEW & DOWNLOAD

On the expansive cracking of a cement matrix containing atomized basic oxygen furnace slag with a metallic iron

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
On the expansive cracking of a cement matrix containing atomized basic oxygen furnace slag with a metallic iron
Author
Tafesse, MillionLee, Hyo KyoungAlemu, Abel ShiferawKim, Hyeong-KiPyo, Sukhoon
Issue Date
2020-12
Publisher
Elsevier Ltd
Citation
CONSTRUCTION AND BUILDING MATERIALS, v.264, pp.119806
Abstract
A series of experiments was conducted to investigate the crack-expansion of a cement matrix containing atomized basic oxygen furnace slag with a metallic iron. The BOF slag particles were dispersed in supersaturated Ca(OH)2 solution mimicking the pore solution in a cement matrix and the changes in these particles were visually observed. X-ray diffraction, thermogravimetry, and X-ray photoelectron spectroscopy were conducted on different slag powders and cement paste in the slag. Our major observations indicated that 1) cracks in the BOF slag-containing cement matrix were initiated from the slag particles, 2) the BOF slag contained metallic Fe and free MgO, and 3) Fe oxides, portlandite, and brucite were formed at slag crack points. Therefore, corrosion of metallic Fe is proposed as the main reason for the cracking of a cement matrix with atomized BOF slag; further, hydration of free MgO helps in crack growth and propagation. © 2020 Elsevier Ltd
URI
https://scholarworks.unist.ac.kr/handle/201301/48763
URL
https://www.sciencedirect.com/science/article/pii/S0950061820318110
DOI
10.1016/j.conbuildmat.2020.119806
ISSN
0950-0618
Appears in Collections:
UEE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU