Investigation of Selected Physical Parameters of Cementitious Composite during Sequential Fracture Test

Petr Konečný; Václav Veselý; Petr Lehner; Daniel Pieszka; Libor Žídek

doi:10.4028/www.scientific.net/AMR.969.228

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Impact of Seismicity on Stability of Earthen Dam Slopes
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Investigation of Selected Physical Parameters of Cementitious Composite during Sequential Fracture Test
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 969Investigation of Selected Physical Parameters of...

Investigation of Selected Physical Parameters of Cementitious Composite during Sequential Fracture Test

Abstract:

The paper is focusing on the investigation of the effective crack length obtained from bending test on concrete notched beams with the complementary measurements of ultrasound passing time through the tested concrete specimen. The ultrasound passing time measurements are performed on several stages of the fracture process along the specimen ligament for each tested notched beam. Gained results of the time of ultrasound pulse needed to pass through specimens' failure zone, i.e. its dependence on the crack length or opening, provide information which may help to identify the process of crack formation without the visible indications. The fracture tests are conducted for a set of specimens differing in the notch length. Changes of the ultrasound passing times with increasing effective crack length are observed and discussed.

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Periodical:

Advanced Materials Research (Volume 969)

Pages:

228-233

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.969.228

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Online since:

June 2014

Authors:

Petr Konečný*, Václav Veselý, Petr Lehner, Daniel Pieszka, Libor Žídek

Keywords:

Cementitious Composite, Compliance, Effective Crack, Electrical Resistivity, Fracture Process Zone, Three-Point Bending Test, Ultrasound Passing Time

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