Bildbasierte Frischbetonprüfung: Teil 3: Homogenität des Frischbetons

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Details

OriginalspracheDeutsch
Seiten (von - bis)716-724
Seitenumfang9
FachzeitschriftBeton- und Stahlbetonbau
Jahrgang118
Ausgabenummer10
PublikationsstatusVeröffentlicht - 19 Okt. 2023

Abstract

Image-based quality conctrol – part 3: homogeneity of fresh concrete. Homogeneity – i.e. the uniformity of the composition and properties of concrete in its fresh and hardened state – is a central requirement for concrete as a building material. Variations in homogeneity usually expressed in local changes, e.g. in the modulus of elasticity, strength or durability. Especially in the case of highly flowable (≥ F5) and self-compacting concretes (SCC) but also, for example, in the case of air entrained concretes, homogeneity is a time-dependent variable and changes due to segregation processes such as sedimentation and bleeding or as a result of unsuitable processing. An evaluation of the homogeneity of the fresh concrete is only possible visualy with the current testing methods on construction site. Building on the assessable properties already presented in the first two parts of this article, the range of properties of image-based quality control is extended to include the homogeneity of the fresh concrete. For this purpose, visually detectable properties of the fresh concrete are used within the scope of the flow table test – paste separation in the edge area and geometric distribution of the aggregate on the surface.

Schlagwörter

    digital quality control, flow table test, homogeneity, image-based method, segregation

ASJC Scopus Sachgebiete

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Bildbasierte Frischbetonprüfung: Teil 3: Homogenität des Frischbetons. / Schack, Tobias; Coenen, Max; Haist, Michael.
in: Beton- und Stahlbetonbau, Jahrgang 118, Nr. 10, 19.10.2023, S. 716-724.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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