Investigation of corrosion protection properties of concrete containing ground granulated blast-furnace slag for massive coastal concrete structures in Korea

Title: Investigation of corrosion protection properties of concrete containing ground granulated blast-furnace slag for massive coastal concrete structures in Korea
Author(s): J.-K. Yoo, S.-J Park, S.-S. Lee, Y.-J. Kim
Paper category : conference
Book title: International Conference on Advances in Concrete and Structures
Editor(s): Ying-shu Yuan, Surendra P. Shah and Heng-lin Lü
Print-ISBN: 2-912143-41-1
e-ISBN: 2351580176
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 818 - 826
Total Pages: 9
Nb references: 7
Language: English

Abstract: 
The corrosion inhibition and the reduction of hydration heat properties of Ground Granulated Blast-Furnace Slag (GGBFS) added to concrete were investigated. Since the massive concrete structures are vulnerable to the thermal crack by hydration, adiabatic temperature rising tests were performed for water-binder ratios (water to cement + GGBFS) from 43.2% to 47.3%, while replacing 15% to 50% of cement with the same weight of GGBFS. In addition, the corrosion protection performance was evaluated using cylindrical specimens embedded with steel reinforcement. The specimens were cast using type portland cement and GGBFS for the combination of 3 water-binder ratios and 2 levels of chloride ion quantity. The corrosion area of the embedded steel bars was determined by the high pressure steam curing method specified in Korea Standards (KS F 2561 : Corrosion inhibitor for reinforcing steel in concrete).
The results showed that the replacement of GGBFS was effective in reducing the hydration heat. The corrosion area of the embedded steel bars decreased as the replacement of GGBFS increased. However, the corrosion area of the steel bar was proportional to the auto-clave cycle and the chloride ion quantity. Among the tested specimens, compressive strength, reduction of hydration heat, and corrosion inhibition performance were excellent when 50% of cement was replaced with the same weight of GGBFS.

Online publication: 2003-08-10
Publication type : full_text
Public price (Euros): 0.00