The effect of limestone mineral addition and cement kiln dust on the chloride ingress into mortar specimens made with cement, fly ash and slag
- Publication Type:
- Conference Proceeding
- Citation:
- fib Symposium, 2016, pp. 1-13
- Issue Date:
- 2016-01-01
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Following changes to the cement standard, AS 3972 General and blended cement, in 2010 the author commenced research into the effect of increased levels of limestone mineral addition plus cement kiln dust on the rate of chloride ingress though mortar and concrete. The research also incorporates the effect of replacing some of the cement with fly ash and ground granulated blastfurnace slag. This paper concentrates on the chloride ion ingress data that has been produced as part of the research. The mixes reported in this paper are based on mixes made with cement containing limestone mineral levels of 4%, 10% and 15% with and without 5% cement kiln dust additions and mixes where the cement was replaced with 20% fly ash or 30% slag again with and without 5% cement kiln dust. The chloride ingress of the mortar has been determined on specimens that have been subjected to standard water curing for up to one year and tested using a method based on Nord Test Build NT Build 492 (1999).
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