Fatigue behavior of a multi-scale cement composite

Parant, Édouard; Rossi, Pierre; Boulay, Claude

doi:10.1016/j.cemconres.2006.04.006

Cited by 46 publications

(28 citation statements)

References 4 publications

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“…This increase in flexural strength was believed to be dependent on the maximum flexural fatigue stress (S max ). This observation confirms previously noted results in the literature, that prior cycling may lead to an improvement in strength (Naaman and Hammoud, 1998;Naaman and Harajli, 1990;Parant et al, 2007;Ramakrishnan et al, 1996;Rossi and Parant, 2008). It was suggested that this increase in strength is due to densification of the material, caused by stress cycling.…”

Section: Fatiguesupporting

confidence: 81%

Fatigue life and self-induced volumetric changes of CARDIFRC

Nicolaides

Kanellopoulos

Karihaloo

2010

Magazine of Concrete Research

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A class of ultra-high-performance fibre-reinforced cementitious composites (UHPFRCC) has been developed at Cardiff university and registered under the trade name CARDIFRC. The method of its production and its mechanical and fracture properties were reported previously in a series of papers in Magazine of Concrete Research. Here the results of recent fatigue and shrinkage tests on this material are reported. As with the mechanical and fracture properties, it is shown that an even and uniform distribution of fibres throughout the bulk of the material is crucial to its superior fatigue performance and to the reduction in the shrinkage strains.

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Section: Fatiguesupporting

confidence: 81%

Fatigue life and self-induced volumetric changes of CARDIFRC

Nicolaides

Kanellopoulos

Karihaloo

2010

Magazine of Concrete Research

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“…This threshold strain value of 0.25 % was justified from results of the preliminary tensile fatigue test. The idea of a threshold strain value for the endurance limit was also taken from findings of Parant et al [8].…”

Section: S1 Series: Tensile Fatigue Behaviour Within the Elastic Domainmentioning

confidence: 99%

“…Parant et al [8] carried out four-point bending fatigue tests on UHPFRC of the CEMTEC multiscale Ò type including three different types of fibres. The endurance limit was evaluated as 65 % of bending tensile stress for 2 million cycles.…”

Section: Literature Reviewmentioning

confidence: 99%

Tensile fatigue behaviour of ultra-high performance fibre reinforced concrete (UHPFRC)

2013

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The tensile fatigue behaviour of ultra-high performance fibre reinforced concrete (UHPFRC) under constant amplitude fatigue cycles is presented. Three series of uniaxial tensile fatigue tests up to a maximum of 10 million cycles were conducted with the objective to determine the endurance limit of UHPFRC that was supposed to exist for this material. The fatigue tests reveal that an endurance limit exists in all three domains of UHPFRC tensile behaviour at S-ratios ranging from 0.70 to 0.45 with S being the ratio of the maximum fatigue stress to the elastic limit strength of UHPFRC. Rather large variation in local specimen deformations indicates significant stress and deformation redistribution capacity of the UHPFRC bulk material enhancing the fatigue behaviour. The fatigue fracture surface of UHPFRC shows features of the fatigue fracture surfaces of steel, i.e. fatigue crack propagation is identified by a smooth surface while final fracture leads to rather rough surface. Various fatigue damaging mechanisms due to fretting and grinding as well as tribocorrosion are identified.

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“…There are several papers about the fatigue behaviour of UHPFRC ( [8][9][10][11][12]) and steel rebar respectively ( [13][14][15]). To some extent the fatigue behaviour of R-UHPFRC might be understood as a simple superposition of the fatigue behaviour of UHPFRC and steel rebar.…”

Section: Introductionmentioning

confidence: 99%

Tensile fatigue behaviour of Ultra-High Performance Fibre Reinforced Concrete combined with steel rebars (R-UHPFRC)

Makita

Brühwiler

2014

International Journal of Fatigue

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a b s t r a c tUltra-High Performance Fibre Reinforced Concrete (UHPFRC) combined with steel rebars, subsequently called R-UHPFRC, is a promising building material implying a novel technology for the improvement of concrete structures. Steel rebars enhance effectively the resistance of UHPFRC while reducing variability in the tensile behaviour of monolithic UHPFRC due to variation in fibre distribution and orientation. When a thin layer of R-UHPFRC is overlaid on top of a concrete bridge deck slab, it is subjected to repeating wheel loads and fatigue limit state needs to be considered. This paper presents the results of tensile fatigue tests on R-UHPFRC elements for the determination of its fatigue behaviour. Experimental results show a fatigue endurance limit at 10 million cycles at a solicitation level of S = 0.54 for S being the ratio between the maximum fatigue force and the ultimate strength. Over the fatigue life of the specimens, stress was transferred from UHPFRC to steel rebars. Fatigue resistance of R-UHPFRC shows that it has a significant potential for fatigue strengthening of reinforced concrete structural elements like bridge deck slabs.

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Fatigue behavior of a multi-scale cement composite

Cited by 46 publications

References 4 publications

Fatigue life and self-induced volumetric changes of CARDIFRC

Fatigue life and self-induced volumetric changes of CARDIFRC

Tensile fatigue behaviour of ultra-high performance fibre reinforced concrete (UHPFRC)

Tensile fatigue behaviour of Ultra-High Performance Fibre Reinforced Concrete combined with steel rebars (R-UHPFRC)

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