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Alkali-silica reactivity resistance of high-volume fly ash cementitious systems Shon, Chang-Seon ; Zollinger, Dan G ; Sarkar, Shondeep L

By: Shon, Chang-SeonContributor(s): Zollinger, Dan G | Sarkar, Shondeep LPublication details: Transportation Research Record, 2002Description: nr 1798, s. 17-21Subject(s): USA | Fly ash | | Alkali silica reaction | | Variability | Cement | Alternative | Test | Concrete | 52Bibl.nr: VTI P8169:2002 RefLocation: Abstract: The role of high-volume ASTM Class F fly ash (58% by mass of cement) in reducing expansion caused by alkali-silica reaction was investigated. A series of modified ASTM C1260 tests were performed with three different concentrations of NaOH solution and over an extended test period of 28 days; a reactive siliceous fine aggregate was used. Test results confirm that replacing 58% of portland cement (by mass) with high-volume fly ash in a cementitious system significantly helps control expansion caused by alkali-silica reaction.
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The role of high-volume ASTM Class F fly ash (58% by mass of cement) in reducing expansion caused by alkali-silica reaction was investigated. A series of modified ASTM C1260 tests were performed with three different concentrations of NaOH solution and over an extended test period of 28 days; a reactive siliceous fine aggregate was used. Test results confirm that replacing 58% of portland cement (by mass) with high-volume fly ash in a cementitious system significantly helps control expansion caused by alkali-silica reaction.

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