63 0

Steel Corrosion in Calcium Aluminate Cement Mortar against Chloride

Title
Steel Corrosion in Calcium Aluminate Cement Mortar against Chloride
Author
조원정
Keywords
binding; buffering; calcium aluminate cement; chloride; corrosion; transport
Issue Date
2021-01
Publisher
AMER CONCRETE INST
Citation
ACI MATERIALS JOURNAL, v. 118, NO 1, Page. 1-10
Abstract
Three different types of calcium aluminate cement (CAC) were investigated about their resistance to chloride-induced corrosion of steel. CAC imposed higher corrosion resistance compared with ordinary portland cement (OPC). The corrosion current density in CAC was nearly indicative of the passivity, ranging below 1.0 mA/m2 (6.45 × 10–4 mA/in.2 ) during the entire duration of monitoring. Some rust was slightly formed on the steel surface in a CAC mixture in the visual examination, while the steel reinforcing bars in OPC were severely corroded along the entire surface, with a corrosion current density up to 56.3 mA/m2 (3.63 × 10–2 mA/in.2 ). Additionally, chloride transport was delayed in CAC by a reduction in the surface chloride, accounting for 1.34 to 1.84% by weight of the binder. The chloride binding capacity of CAC was lower but buffering against a pH fall was higher to keep bound chlorides unreactive in the CAC matrix to enhance the corrosion resistance.
URI
https://www.proquest.com/docview/2492713279?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/172303
ISSN
0889325X; 1944737X
DOI
10.14359/51728279
Appears in Collections:
RESEARCH INSTITUTE[E](부설연구소) > RESEARCH INSTITUTE OF ENGINEERING & TECHNOLOGY(공학기술연구소) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE