Cement based composites for thin building elements: Fracture and fatigue parameters

Seitl, Stanislav; Bílek, Vlastimil; Keršner, Zbyněk; Veselý, Jiří

doi:10.1016/j.proeng.2010.03.098

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…Modern mortars are becoming more and more complex. Using waste materials for their production (especially replacing significant amounts of sand) is a challenge requiring a new technological approach and attitude change in the construction industry [52]. Modern mortar is as complex as modern concrete and should be treated in the same technological, design, and production regime.…”

Section: Discussionmentioning

confidence: 99%

Strength and Durability Characteristics of Cement-lime Mortars with Fly Ash and Slag as Aggregate Substitutes

Katzer

Kończalski

2021

Period. Polytech. Civil Eng.

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The global consumption of sand by the concrete industry has increased significantly over the years. Natural sand has become a desired commodity in numerous regions of the world. To protect both the existing resources of natural sand and utilize waste materials, drastic actions are urgently needed. The production of cement mortars, which are solely based on fine aggregate, is responsible for the large consumption of natural sand. In the described research program, we proposed to substitute 50 % of the natural sand in mortars with fly ash and slag. The strength properties and durability characteristics of the new mortars were tested. It was proved that mortars with fly ash and slag can be used for specific applications in civil engineering. Areas for future research associated with the mortars in question were also pointed out.

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Section: Discussionmentioning

confidence: 99%

Strength and Durability Characteristics of Cement-lime Mortars with Fly Ash and Slag as Aggregate Substitutes

Katzer

Kończalski

2021

Period. Polytech. Civil Eng.

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“…For example, worldwide there are numerous concrete bridges that suffered excessive multi-decade deflections, some of which have already collapsed [2]. Fatigue behaviour in concrete is a complex process, and even though a tremendous effort has been made by the international scientific community, no universally accepted strategy suitable to efficiently perform the fatigue assessment of concrete has been agreed yet [4,25,27,28]. This article aims to evaluate and compare the fatigue crack propagation rate in VC for different stress ratios using the ParisErdogan law [22].…”

Section: Introductionmentioning

confidence: 99%

Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law

Seitl¹,

Thienpont²,

Corte³

2016

Frattura Ed Integrità Strutturale

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ABSTRACT. The fatigue behaviour of concrete has become more important for the design of constructions due to the desire to build slimmer structures, which are more sensitive to fatigue loading. This article aims to evaluate and compare the fatigue crack propagation rate in vibrated concrete for four different stress ratios using the Paris-Erdogan law. The data evaluation in this article is based on crack mouth opening displacement (CMOD) measurements from cyclic three-point bending tests on single edge notched beams and from wedge splitting tests on notched cubes, obtained from experiments at Ghent University. For this study, finite element analysis is used to obtain a mathematical relationship between the CMOD and the relative crack length a/W, as well as a relationship between the stress intensity ratio ∆K and a/W. The obtained mathematical relationships were then combined with the measured CMOD values to correlate the test data to the ParisErdogan law. Herein, the crack propagation rate da/dN is plotted against the corresponding stress intensity range ∆K in a log-log graph. In a final step, the Paris-Erdogan law parameters C and m were obtained through linear curve fitting on the data points from the obtained graphs. The parameters C and m are then used to compare and evaluate the fatigue crack behavior in vibrated Citation: Seitl, S., Thienpont, T., De Corte, W., Fatigue crack behaviour: comparing threepoint bend test and wedge splitting test data on vibrated concrete using Paris' law, Frattura ed Integrità Strutturale, 39 (2017) 110-117.

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“…The limited knowledge about the long-term behavior or the effects of repeated loading on the properties of these materials caused a growing interest in the fatigue performance of concrete [10][11][12][13][14][15]. Furthermore, reliable data are needed for calibration of accurate models capable to predict the fatigue behavior of Alkali-Activated composites.…”

Section: Introductionmentioning

confidence: 99%

“…In general, parameters such as loading conditions, load frequency, boundary conditions, stress level (stress ratio), number of cycles, matrix composition, environmental conditions and mechanical properties will influence the fatigue performance of concrete [10][11][12][13]).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Fatigue Parameters of Alkali-Activated and Ordinary Portland Cement Based Concretes

.¹

2014

IJRET

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Concretes used in civil structures are usually made on ordinary Portland cement (OPC) base. Alkali activated concretes (AAC) are considered as a perspective building materials. They show high strength, good durability, and good resistance to aggressive agents etc. This paper introduces the values of the basic fatigue parameters of both types of concrete; the alkali-activated concrete is prepared as a new material for the potential production of concrete elements developed by ZPSV, a.s. company. The concrete mixtures have a similar utilization and therefore the fatigue parameters can be compared. The specimens were prepared and tested under static (compressive strength) and cyclic loading (fatigue parameters Wöhler curve). The experimentally obtained results (mechanical and fatigue) of both types of concrete are compared and the suitability of these types of composites for their application is discussed.

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Cement based composites for thin building elements: Fracture and fatigue parameters

Cited by 7 publications

References 8 publications

Strength and Durability Characteristics of Cement-lime Mortars with Fly Ash and Slag as Aggregate Substitutes

Strength and Durability Characteristics of Cement-lime Mortars with Fly Ash and Slag as Aggregate Substitutes

Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law

Comparison of Fatigue Parameters of Alkali-Activated and Ordinary Portland Cement Based Concretes

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