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The WST-method for fracture testing of fibre-reinforced concrete

Ingemar Löfgren (Institutionen för bygg- och miljöteknik, Konstruktionsteknik) ; John Forbes Olesen ; Mathias Flansbjer
Nordic Concret Research 34, (2005)
[Artikel, refereegranskad vetenskaplig]

To evaluate the reproducibility of the wedge-splitting test method (WST-method) and to provide guidelines, a round robin study was conducted - financed by NORDTEST - in which three labs participated; see Löfgren et al. [1]. The test results from each lab were analysed and a study of the variation was performed. From the study of the intra-lab variations, it is evident that the variations of the steel fibre-reinforced concrete properties are significant. The investigation of the inter-lab variation, based on an analysis of variance (ANOVA), indicated no inter-lab variation. Furthermore, the tensile fracture properties were interpreted from the test results as a bi-linear stress-crack opening relationship using inverse analysis.

Nyckelord: Fibre-reinforced concrete, fracture testing, wedge-splitting test method, round-robin study



Denna post skapades 2006-08-25. Senast ändrad 2016-09-14.
CPL Pubid: 9235

 

Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Konstruktionsteknik

Ämnesområden

Samhällsbyggnadsteknik

Chalmers infrastruktur