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ID 51871
FullText URL
Author
JARIYATHITIPONG, Paweena
HOSOTANI, Kazuyoshi
Abstract
The deterioration of concrete by sulfuric acid attack in sewage environments has become a serious problem. In this study, it was shown that the resistance to sulfuric acid of mortar and concrete can be improved by using a blast-furnace slag fine aggregate to the total amount of fine aggregate. When mortar or concrete reacts to sulfuric acid, dihydrated gypsum film is formed around the particulate of the fine aggregate. This dihydrated gypsum film could retard the penetration of sulfuric acid, thus improving the resistance to sulfuric acid. However, the resistance to sulfuric acid depends on the hardness of the dihydrated gypsum film.
Keywords
sulfuric acid attack
blast furnace slag sand
ground granulated blast furnace slag
gypsum
sewerage
Published Date
2013-05
Publication Title
Proceeding of First International Conference on Concrete Sustainability (ICCS13)
Start Page
581
End Page
586
Content Type
Conference Paper
language
英語
Refereed
Unknown