Comparative Study on the Fatigue Behaviour of SCC and VC

Korte, Sara; Boel, Veerle; Corte, Wouter De; Schutter, Geert De

doi:10.4028/www.scientific.net/kem.627.333

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…The fatigue tests results are shown in the Fig. 2 and 3, where the maximum bending stress (σ, [MPa]) applied during the fatigue experiments is plotted against the logarithm of the number of cycles to failure (N, [−]) or 2×10 6 cycles, limit number of cycles, for run-outs i.e. for…”

Section: Resultsmentioning

confidence: 99%

Mechanical and Fatigue Parameters of Two Types of Alkali-Activated Concrete

Seitl

Bílek

Šimonová

et al. 2015

KEM

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The alkali-activated concrete is prepared as a new potential material for the production of concrete elements developed by ZPSV, a. s. company. Note that civil engineering structures are usually made of ordinary Portland cement (OPC) based concrete but today, the cement industry is responsible for emitting between 6% and 7% of all the CO2 emission into the atmosphere. Therefore, it is essential to seek different binders to provide environmental friendly materials. One possible alternative is the application of alkali-activated concrete. The optimal design of concrete mixture was studied in this investigation. Two types of concrete have a similar application and therefore the fatigue parameters can be compared. To this aim, specimens were prepared and tested under static (compressive cube strength) and cyclic loading (fatigue parameters − Wöhler curve). The experimentally obtained results (both mechanical and fatigue) of both types of concrete are compared and the suitability of these types of composites for its application is discussed.

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Section: Resultsmentioning

confidence: 99%

Mechanical and Fatigue Parameters of Two Types of Alkali-Activated Concrete

Seitl

Bílek

Šimonová

et al. 2015

KEM

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“…The limit of 2×10 6 cycles to fracture was used to consider the applied stress amplitude as safe for loading during the whole component lifetime. The testing procedure based on applying cyclic loading with a defined stress amplitude to determine the number of cycles to the fracture was described by multiple researchers [10][11][12][13][14][15][16][17]. The formula for fitting the experimentally obtained data from the fatigue test used in this paper is based on empirically derived S-N diagrams known as Wöhler curves:…”

Section: Experimental Data Processing Proceduresmentioning

confidence: 99%

Fatigue and fracture mechanical properties of selected concrete for subtle precast structural elements

2020

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Precast concrete elements used as a civil structure are usually made of a cement-based matrix and natural aggregates (such as sand, gravel, crushed stone, etc.). These structures are usually exposed not only to a static load but also to a cyclic load if they load the bearing part of a bridge (traffic etc.). The knowledge of fatigue and fracture mechanical characteristics is important in designing and modelling new structures. This paper introduces and compares fracture mechanical properties obtained from static and fatigue tests for three kinds of concrete. The focus was set on the bulk density, flexural and compressive cube strength, fracture toughness and fatigue properties (S−N − Wöhler curve). All of these tests are important for a practical application in the design of precast concrete structures. The experimental results were statistically analysed and they showed that the fatigue and mechanical fracture properties improved with improved mechanical parameters of concrete.

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“…The test is nowadays widely used by researchers see e.g. Zimmerman and Lehký [4] -for two classes of cement based concrete C 40/50 and C 50/60, Seitl et al [5] -for foam concrete, Merta et al [6]concrete with natural fibers, Walter [7] -for concrete-steel interface, Korte et al for self-compacting concrete [8][9] [10] and for vibrated concrete [9] [11], ASTM 1221-96 [12] -for steel, etc.…”

Section: Introductionmentioning

confidence: 99%

Wedge Splitting Test: Displacement Field Analysis by Multi-parameter Fracture Mechanics

Seitl¹,

Miarka²,

Ruzicka³

et al. 2019

TCES

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Multi-parameter fracture mechanics is nowadays quite extensively applied when cracked structures/specimens are investigated. The reason was that it has been shown that it can be helpful and bring results that are more accurate when for describing of fracture processes a larger region around the crack tip is used. This can be typical for material like concrete or other materials with quasi-brittle behaviour. Various relative crack length configurations were chosen in order to investigate the importance of the higher-order terms of the Williams expansion (WE) on the crack-tip stress field distribution in Wedge splitting test specimen. The higher-order terms were calculated by means of the over-deterministic method from displacements of nodes around the crack tip obtained by a finite element analysis in different radial distances from the crack tip. The effect of the constraint level (second member of WE) was investigated. Although the third and higher terms of the Williams series are very often neglected, their influence on the opening stress values was investigated and discussed.

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Comparative Study on the Fatigue Behaviour of SCC and VC

Cited by 5 publications

References 6 publications

Mechanical and Fatigue Parameters of Two Types of Alkali-Activated Concrete

Mechanical and Fatigue Parameters of Two Types of Alkali-Activated Concrete

Fatigue and fracture mechanical properties of selected concrete for subtle precast structural elements

Wedge Splitting Test: Displacement Field Analysis by Multi-parameter Fracture Mechanics

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