Ultrasonic wave propagation and digital image correlation measurements of polyolefin fibre-reinforced concrete beams under 3-point bending (beam B-006)

Description

The DataSet contains the results of the mechanical behaviour of a concrete beam under a 3-point bending test. The beams had dimensions 15 x 15 x 70 cm³. The beam B-Con was made of concrete without fibres (as the reference beam), while beams B-002, B-004, and B-006 were manufactured from the concrete mix containing 2 kg/m³, 4 kg/m³ and 6 kg/m³ of fibres, respectively. The elements were notched to induce crack formation in a specific area of the beams. The notch had a width of 4 mm and a depth of 15 mm (10 % of the beam height) and was cut on the bottom of the beam in the middle of its span.

The 3-point bending tests were performed using the universal testing machine (UTM) Instron 5569 equipped with a CMOD (crack mouth opening displacement) gauge extensometer 2670-130 with a base of a length of 5 mm. The distance between supports was 45 cm. The parameters of the test were: a preload of 10 N, a constant mid-span displacement increment of 0.3 mm/min (in the initial stage of loading) and then with a constant strain increment of 0.3%/min (after the force value reached 5 kN). The tests were stopped when the CMOD achieved 0.5 mm.

During the 3-point bending test, integrated ultrasonic testing (UT) and digital image correlation (DIC) measurements were carried out. The excitation was a five-cycle wave packet with a central frequency of 80 kHz. Photographs of the front surface of the beam were taken every 5 s by Canon EOS 5D III digital camera. Wave propagation signals were registered every 5 s with a sampling frequency of 8 MHz by a digital oscilloscope PicoScope 4824.

More detailed information on this study may be found in the paper:

Rucka, M.; Wojtczak, E.; Knak, M.; Kurpińska, M. Characterization of fracture process in polyolefin fibre-reinforced concrete using ultrasonic waves and digital image correlation. Constr. Build. Mater. 2021, 280, 122522, doi:10.1016/j.conbuildmat.2021.122522

The dataset consists of wave propagation signals and photographs for beam B-006 (concrete with 6 kg/m³ of fibres)

The photographs (.jpg) presenting the front surface of the beam were taken every 5 s. The UT files utilize a comma-separated values (.csv) format and contain wave propagation signals of a length of 5 ms, recorded every 5 s. In a single file, the time vector (in ms) and the signals from channels A (in V), B (in V) and D (in V) can be found. The UTM file has (.csv) extension and contains the time of the test (1st column), force (5th column), displacement of traverse (2nd column) and strain (6th column).

Dataset file

p4 (beam B-006).zip

4.0 GB, S3 ETag a70f94de8fbb46b22adcb51b397f4926-9, downloads: 84

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Attribution
Raw data:: Data contained in dataset was not processed.

Details

Year of publication:

2021

Verification date:

2021-09-09

Dataset language:

English

Fields of science:

Civil engineering and transport (Engineering and Technology)
mechanical engineering (Engineering and Technology)

DOI:

10.34808/thd2-8h89

Funding:

Complex investigations of the development of micro- and macro-cracks in concrete members: experiments and discrete element method modelling

Series:

Ultrasonic wave propagation and digital image correlation measurements of polyolefin fibre-reinforced concrete beams under 3-point bending

Verified by:

Gdańsk University of Technology

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