Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The accelerating mechanism of alkali free liquid accelerator based on fluoroaluminate for shotcrete
Highlights The effect of AAF on setting time and mechanical properties of cement paste and mortar were studied. The composition and morphology of C3A and C3S with AAF hydration products were investigated. Early hydration conceptual models of C3A and C3S with AAF were established.
Abstract In this paper, the alkali free liquid accelerator based on fluoroaluminate (AAF) was prepared, and its effect on the setting time of cement paste and compressive strength of mortar was studied. The influences of the AAF on hydration process of cement paste, the composition and morphology of the C3A and C3S early hydration products were investigated by isothermal calorimetry, XRD and SEM analysis. The results show that the increase of the AAF dosage could greatly shorten the setting time of cement paste, but it also caused the 1d compressive strength of mortar to decrease. In addition, the early hydration conceptual models of the C3A and C3S in presence of AAF were established based on the experimental results.
The accelerating mechanism of alkali free liquid accelerator based on fluoroaluminate for shotcrete
Highlights The effect of AAF on setting time and mechanical properties of cement paste and mortar were studied. The composition and morphology of C3A and C3S with AAF hydration products were investigated. Early hydration conceptual models of C3A and C3S with AAF were established.
Abstract In this paper, the alkali free liquid accelerator based on fluoroaluminate (AAF) was prepared, and its effect on the setting time of cement paste and compressive strength of mortar was studied. The influences of the AAF on hydration process of cement paste, the composition and morphology of the C3A and C3S early hydration products were investigated by isothermal calorimetry, XRD and SEM analysis. The results show that the increase of the AAF dosage could greatly shorten the setting time of cement paste, but it also caused the 1d compressive strength of mortar to decrease. In addition, the early hydration conceptual models of the C3A and C3S in presence of AAF were established based on the experimental results.
The accelerating mechanism of alkali free liquid accelerator based on fluoroaluminate for shotcrete
Yang, Renhe (Autor:in) / He, Tingshu (Autor:in)
21.11.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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