Filler Effect in Shotcrete

Isabel Galan, Lukas Briendl, Maria Thumann, Florian Steindl, Rudolf Röck, Wolfgang Kusterle, Florian Mittermayr

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

The effects of fine limestone powder on the early hydration of cementitious systems accelerated by means of alkali-free aluminum sulfate based products, commonly used for shotcrete applications, were investigated in the course of laboratory and real scale tests. In binary (CEM I + limestone) and ternary (CEM I + limestone + slag) systems the addition of fine limestone led to an enhancement of the hydration degree and strength development at early times (<24 h). The formation of ettringite, aluminate hydrates, and C-S-H is affected by the joint action of the setting accelerator and the fine limestone. Accelerator and limestone, in combination with the cement, can be optimized to enhance ettringite and silicate reaction, in some cases coupled with aluminate reaction inhibition, to produce mixes suitable for sprayed concrete applications. Such optimization can help to reduce the cement content in the mixes without compromising the early strength development of the shotcrete.

Originalspracheenglisch
Aufsatznummer3221
Seitenumfang24
FachzeitschriftMaterials
Jahrgang12
Ausgabenummer19
DOIs
PublikationsstatusVeröffentlicht - 1 Okt 2019

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Calcium Carbonate
Limestone
Fillers
Hydration
Particle accelerators
Cements
Silicates
Alkalies
Hydrates
Powders
Slags
Concretes
Aluminum

Fields of Expertise

  • Advanced Materials Science
  • Sustainable Systems

Dies zitieren

Galan, I., Briendl, L., Thumann, M., Steindl, F., Röck, R., Kusterle, W., & Mittermayr, F. (2019). Filler Effect in Shotcrete. Materials, 12(19), [3221]. https://doi.org/10.3390/ma12193221

Filler Effect in Shotcrete. / Galan, Isabel; Briendl, Lukas; Thumann, Maria; Steindl, Florian; Röck, Rudolf; Kusterle, Wolfgang; Mittermayr, Florian.

in: Materials, Jahrgang 12, Nr. 19, 3221, 01.10.2019.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Galan, I, Briendl, L, Thumann, M, Steindl, F, Röck, R, Kusterle, W & Mittermayr, F 2019, 'Filler Effect in Shotcrete' Materials, Jg. 12, Nr. 19, 3221. https://doi.org/10.3390/ma12193221
Galan I, Briendl L, Thumann M, Steindl F, Röck R, Kusterle W et al. Filler Effect in Shotcrete. Materials. 2019 Okt 1;12(19). 3221. https://doi.org/10.3390/ma12193221
Galan, Isabel ; Briendl, Lukas ; Thumann, Maria ; Steindl, Florian ; Röck, Rudolf ; Kusterle, Wolfgang ; Mittermayr, Florian. / Filler Effect in Shotcrete. in: Materials. 2019 ; Jahrgang 12, Nr. 19.
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