Investigation of ternary binder based systems in terms of Calorimetry, Shrinkage and In-Situ XRD

Qorllari, Anxhelina; Qoku, Elsa; Bier, Thomas; Dilo, Teuta

doi:10.33107/ubt-ic.2017.43

Cited by 1 publication

(2 citation statements)

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“…24). Changing limestone powder for quartz powder affects the length change as well as the heat flow evolution: quartz can decrease the heat flow and shrinkage during the first 24 h. Not only different aggregates can influence these properties, but also the presence of redispersible additive powder tends to reduce the plastic shrinkage and to increase the expansion [83]. Ternary system OPC-CAC-CaSO 4 expansion mechanism: the induced expansion mechanism occurs during the first hours of hydration through the controlled ettringite formation within the cementitious matrix.…”

Section: C-s-h Heat Flowmentioning

confidence: 99%

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Ternary system Portland cement-calcium aluminate cement-calcium sulfate applied to self-leveling mortar: a literature review

2021

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The modernization of building systems is increasingly demanding products that improve efficiency during their processing. The development of self-leveling mortars for the regularization of flooring is a consequence of this evolution. The high contents of binder and water to obtain self-flowing property, plus the application of thin layers over large areas, make this type of mortar susceptible to high shrinkage levels. Thus, the ternary system Portland cement-calcium aluminate cement-calcium sulfate (OPC-CAC-CaSO 4) is a viable solution for shrinkage compensation. The expansion mechanism based on ettringite formation aims to prevent the mortar from cracking. Considering its complexity and that international literature is still limited (while Brazilian is null), this article presents a literature review that covers diverse aspects related to the application of the system OPC-CAC-CaSO 4. The influence of raw materials and mix proportions on rheological behavior, reaction kinetics, development of strength, and length change are discussed.

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Section: C-s-h Heat Flowmentioning

confidence: 99%

“…Length change of self-leveling mortars with ternary system OPC/CAC/CaSO 4 in dosages of 85/10/5, 80/10/10, and 75/10/15 at a relative humidity of 95%, 22 °C up to 24 h (adapted from[9]). Heat flow and early length change of the ternary system with limestone or quartz powder during the first 24 h of hydration (adapted from[83]).…”

mentioning

confidence: 99%