From lab scale spraying to real scale shotcreting and back to the lab

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

Publikation: KonferenzbeitragPaperForschungBegutachtung

Abstract

Before new mixes are sprayed in real scale applications, lab experiments have to be carried out to provide a basis for predicting a good performance in real scale. In many cases, to understand the correlations between the behavior in the lab and in real scale spraying, a further set of experiments after the real spraying is required. In this paper we present such a two way process for two new wet mixes, one with a very low tricalcium aluminate Portland cement and the other one with a CEM I with addition of ultra-fine calcite. Calorimetry and Shear-Modulus measurements were used in the lab to monitor hydration evolution. In the real scale spraying compressive strength was measured at periodic intervals up to 24 hours. The hydration of the sprayed samples was stopped at 3, 6 and 24 hours and samples were scanned with X-ray for the identification and quantification of the phases present. The results presented are used to discuss the extent to which lab experiments can predict the behavior of mixes in real scale and how small changes in the raw materials and the mixes can lead to quite different results.
Originalspracheenglisch
Seiten139-153
PublikationsstatusVeröffentlicht - 2018
Veranstaltung2018 8th International Symposium on Sprayed Concrete - Trondheim, Norwegen
Dauer: 11 Jun 201814 Jun 2018

Konferenz

Konferenz2018 8th International Symposium on Sprayed Concrete
LandNorwegen
OrtTrondheim
Zeitraum11/06/1814/06/18

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Shotcreting
Spraying
Hydration
Experiments
Calcite
Calorimetry
Portland cement
Compressive strength
Raw materials
Elastic moduli
X rays

Dies zitieren

Galan, I., Thumann, M., Briendl, L., Röck, R., Steindl, F. R., Juhart, J., ... Kusterle, W. (2018). From lab scale spraying to real scale shotcreting and back to the lab. 139-153. Beitrag in 2018 8th International Symposium on Sprayed Concrete, Trondheim, Norwegen.

From lab scale spraying to real scale shotcreting and back to the lab. / Galan, Isabel; Thumann, Maria; Briendl, Lukas; Röck, Rudolf; Steindl, Florian Roman; Juhart, Joachim; Mittermayr, Florian; Kusterle, Wolfgang.

2018. 139-153 Beitrag in 2018 8th International Symposium on Sprayed Concrete, Trondheim, Norwegen.

Publikation: KonferenzbeitragPaperForschungBegutachtung

Galan, I, Thumann, M, Briendl, L, Röck, R, Steindl, FR, Juhart, J, Mittermayr, F & Kusterle, W 2018, 'From lab scale spraying to real scale shotcreting and back to the lab' Beitrag in 2018 8th International Symposium on Sprayed Concrete, Trondheim, Norwegen, 11/06/18 - 14/06/18, S. 139-153.
Galan I, Thumann M, Briendl L, Röck R, Steindl FR, Juhart J et al. From lab scale spraying to real scale shotcreting and back to the lab. 2018. Beitrag in 2018 8th International Symposium on Sprayed Concrete, Trondheim, Norwegen.
Galan, Isabel ; Thumann, Maria ; Briendl, Lukas ; Röck, Rudolf ; Steindl, Florian Roman ; Juhart, Joachim ; Mittermayr, Florian ; Kusterle, Wolfgang. / From lab scale spraying to real scale shotcreting and back to the lab. Beitrag in 2018 8th International Symposium on Sprayed Concrete, Trondheim, Norwegen.
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AU - Juhart, Joachim

AU - Mittermayr, Florian

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