Sulfate resistance of mortars with and without silica fume and natural pozzolan

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dc.contributor.authorCanpolat F.
dc.contributor.authorYurdusev M.A.
dc.contributor.authorTargan S.
dc.contributor.authorYilmaz K.
dc.date.accessioned2024-07-22T08:22:34Z
dc.date.available2024-07-22T08:22:34Z
dc.date.issued2007
dc.description.abstractAn investigation was carried out on the effect of sulfate attack on the sulfate durability of mortars produced with natural zeolite and silica fume having pozzolanic character. Experiments were accomplished on the standard Rilem sand and portland cement mortars where the cement was replaced by various rates of natural zeolite (Z) and silica fume (SF) separately and together. 5% sodium sulfate solution and 5% magnesium sulfate solution were 5% sulfate exposures of mortars were initiated after 28 days of lime saturated water curing, compressive strength and density were determined at the beginning of exposure and at the 2nd, 7th, 28th, 90th days. Water and solutions were renewed after each period of experimental time, 14 days. Mass changes were determined at the time of renewing the solutions. The effects of sodium sulfate solutions on the properties of mortars were related to the zeolite and silica fume ratio. It is found that zeolite and silica fume replacement had caused significant increase in sulfate durability of mortars even at the highest sulfate concentration up to 90 days of exposure. The durability to sulfate attack was obtained with silica fume replacement 5-10%, but strength loss of 10-15% can be expected. Mortars with SF and Z were damaged in magnesium sulfate solution. The compressive strengths decreased with increasing SF and Z content. The test results showed that the use of Z and SF in concrete exposed to magnesium sulfate environment is not recommended. © 2007 Taylor & Francis Group, London.
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/19140
dc.language.isoEnglish
dc.subjectCompressive strength
dc.subjectDurability
dc.subjectMagnesium
dc.subjectMortar
dc.subjectPortland cement
dc.subjectSilica fume
dc.subjectMagnesium sulfate
dc.subjectMagnesium sulfate solution
dc.subjectMass change
dc.subjectNatural pozzolan
dc.subjectNatural zeolites
dc.subjectPozzolanic characters
dc.subjectSaturated water
dc.subjectSilica fume ratios
dc.subjectStrength loss
dc.subjectSulfate attack
dc.subjectSulfate concentrations
dc.subjectSulfate resistance
dc.subjectSulfate solutions
dc.subjectSulfur compounds
dc.titleSulfate resistance of mortars with and without silica fume and natural pozzolan
dc.typeConference paper

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