Characterisation of bending cracks in R/FRC using image analysis
Artikel i vetenskaplig tidskrift, 2016

In this study, experiments were conducted to induce bending cracks of specific surface crack width to reinforced concrete beams made of plain concrete (RC) and reinforced concrete beams made of fibre reinforced concrete (R/FRC). After injecting and impregnating the cracks with dyed epoxy resin, image processing and analysis were employed to investigate the internal crack morphology. Several crack features including crack width (accumulated, effective and maximum), branching and tortuosity were defined and quantified. The results showed that in addition to arrested crack development, the presence of fibres yielded a distinctive change in the internal crack pattern, including increased branching and tortuosity, both of which have positive implications regarding concrete permeation. Likewise, specimens with fibres exhibited reduced maximum individual crack widths near the rebar, potentially increasing the ability of autogenous crack healing and reducing the risk of corrosion initiation.

Durability

Crack detection

Fibre reinforcement

Image analysis

Författare

Carlos Gil Berrocal

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Ingemar Lövgren

Karin Lundgren

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Niclas Görander

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Christopher Halldén

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Cement and Concrete Research

0008-8846 (ISSN)

Vol. 90 104-116

Styrkeområden

Building Futures

Materialvetenskap

Ämneskategorier

Annan materialteknik

Infrastruktur

Chalmers materialanalyslaboratorium

DOI

10.1016/j.cemconres.2016.09.016

Mer information

Skapat

2017-10-08