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- W4214508742 abstract "Delayed ettringite formation in concrete structures can develop long after they are placed into service; this deleterious reaction is particularly difficult to predict because of the extended time before becoming symptomatic. However, once discovered, it is known to impact durability and drastically reduce service life. This research presents a novel test method developed for mortars to represent concretes that experience high early-age temperature profiles to determine the potential for delayed ettringite formation in mass concrete. To more accurately replicate exposure conditions of typical mass concrete placements, this novel method exposes specimens to a rapid heat acceleration and soaking period at 95 °C and 95 % relative humidity for an extended period of time followed by storage in a calcium hydroxide solution at room temperature. This results in a reduction of the dormancy period before onset of delayed ettringite formation while minimizing laboratory resources. A further benefit of the test is the reduction of the induction period typically associated with delayed ettringite formation. The method has proved to be valuable, as it allows for the rapid determination the potential of supplementary cementitious materials to mitigate delayed ettringite formation." @default.
- W4214508742 created "2022-03-02" @default.
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- W4214508742 date "2022-03-03" @default.
- W4214508742 modified "2023-10-16" @default.
- W4214508742 title "A Novel Test Method for the Determination of Delayed Ettringite Formation in Mass Concrete" @default.
- W4214508742 doi "https://doi.org/10.1520/acem20210071" @default.
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