Resistance of concrete with granulated blast furnace slag sand to sulphuric acid attack

Toshiki Ayano, Hisahiro Matsunaga, Takashi Fujii, Kenji Sakata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper explains that granulated blast furnace slag sand can improve the resistance of concrete to sulphuric acid attack. When a part of cement is replaced with ground granulated blast furnace slag, and the granulated blast furnace slag sand is used for sand, the resistance of concrete to sulphuric acid attack can be improved because a coating of gypsum (calcium sulfate dihydrate) is formed on the mortar or concrete. A coating of gypsum is strong enough to prevent the corrosion caused by sulphuric acid attack. The relationships between the immersed depth of mortar or concrete by sulphuric acid attack and the product of soaking time and concentration of sulphuric acid are liner. This paper will show that the resistance to sulphuric acid attack of concrete with granulated blast furnace slag sand is 6 times higher than that of ordinary concrete. The exposure test on sulphuric acid in the sewer for one year has been done, and the superiority of concrete with granulated blast furnace slag sand has been confirmed.

Original languageEnglish
Title of host publication2nd International Conference on Sustainable Construction Materials and Technologies
Pages1355-1363
Number of pages9
Publication statusPublished - Dec 1 2010
Event2nd International Conference on Sustainable Construction Materials and Technologies - Ancona, Italy
Duration: Jun 28 2010Jun 30 2010

Publication series

Name2nd International Conference on Sustainable Construction Materials and Technologies

Other

Other2nd International Conference on Sustainable Construction Materials and Technologies
CountryItaly
CityAncona
Period6/28/106/30/10

ASJC Scopus subject areas

  • Building and Construction

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  • Cite this

    Ayano, T., Matsunaga, H., Fujii, T., & Sakata, K. (2010). Resistance of concrete with granulated blast furnace slag sand to sulphuric acid attack. In 2nd International Conference on Sustainable Construction Materials and Technologies (pp. 1355-1363). (2nd International Conference on Sustainable Construction Materials and Technologies).