CONFERENCE PROCEEDINGS
8th INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN CIVIL ENGINEERING 2021 , 2021.y., pp. 329-336
SHORT CRACK PROPAGATION OF CONCRETE USING RHEOLOGICAL-DYNAMICAL THEORY| |
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| DOI: 10.14415/konferencijaGFS2021.31 |
| UDC: 666.972:539.421 |
| CC-BY-SA 4.0 license |
| Author : Pančić, Aleksandar; Milašinović, Dragan |
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| | Summary: |
| | The Paris law equation can be used only for describing the growth of long
cracks. The region of application is defined between threshold energy release rate and
fracture energy. The short crack growth occurs under the threshold energy release rate
value. Many authors are modified the Paris law for its application on this region. The
growth of short cracks of concrete is more complicated than for metals and it is not enough
researched. In this paper a novel method for describing a short cracks of concrete is
proposed using rheological-dynamical analogy (RDA). This method presents the
modification of previously determined RDA method for long crack propagation, where
stress range in the crack tip is increased using Kitagawa and Takahashi diagram. Cyclic
tensile under three-point bending tests on notched beams are considered. The test results
for the verification of RDA method are taken from literature. |
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| | Keywords: |
| | fatigue, RDA method, crack propagation, three-point bending tests, short cracks |
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