Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Distribution of fibers in SFRC segments for tunnel linings
Highlights Distribution of steel fibers is determined from real-size tunnel lining segment. The size effect of core in scatter of results was determined. The minimum number of samples needed to control the fiber content is proposed.
Abstract This paper presents research results regarding the distribution of steel fibers in concrete used to build precast tunnel segments for Line 9 of the Barcelona Metro. The fiber distribution was studied using the actual fiber contents obtained by means of crushed cores drilled from different points of three full-scale tunnel lining segments. A statistical analysis determined that the fiber content in the ends of segments tends to be greater than in the central zone. The way of transporting, pouring and compacting concrete influences the fiber content and the fiber distribution across the thickness of the segment. In addition, cores with a diameter of 150mm were found to have a lower scatter in the fiber content than smaller diameter specimens. Finally, based on probabilistic approaches, a minimum of 11 cores is proposed to control the fiber content in FRC segments.
Distribution of fibers in SFRC segments for tunnel linings
Highlights Distribution of steel fibers is determined from real-size tunnel lining segment. The size effect of core in scatter of results was determined. The minimum number of samples needed to control the fiber content is proposed.
Abstract This paper presents research results regarding the distribution of steel fibers in concrete used to build precast tunnel segments for Line 9 of the Barcelona Metro. The fiber distribution was studied using the actual fiber contents obtained by means of crushed cores drilled from different points of three full-scale tunnel lining segments. A statistical analysis determined that the fiber content in the ends of segments tends to be greater than in the central zone. The way of transporting, pouring and compacting concrete influences the fiber content and the fiber distribution across the thickness of the segment. In addition, cores with a diameter of 150mm were found to have a lower scatter in the fiber content than smaller diameter specimens. Finally, based on probabilistic approaches, a minimum of 11 cores is proposed to control the fiber content in FRC segments.
Distribution of fibers in SFRC segments for tunnel linings
Carmona, Sergio (Autor:in) / Molins, Climent (Autor:in) / Aguado, Antonio (Autor:in) / Mora, Felipe (Autor:in)
Tunnelling and Underground Space Technology ; 51 ; 238-249
24.10.2015
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Distribution of fibers in SFRC segments for tunnel linings
| British Library Online Contents | 2016
Distribution of fibers in SFRC segments for tunnel linings
| Online Contents | 2016
Distribution of fibers in SFRC segments for tunnel linings
| British Library Online Contents | 2016
Distribution of fibers in SFRC segments for tunnel linings
| British Library Online Contents | 2016