Modified Disk-Shaped Compact Tension Test for Measuring Concrete Fracture Properties

Cifuentes, Héctor; Lozano, Miguel Ángel; Holušová, Táňa; Medina, Fernando R. Contreras; Seitl, Stanislav; Fernández‐Canteli, Alfonso

doi:10.1007/s40069-017-0189-4

Cited by 25 publications

(9 citation statements)

References 38 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 4 shows the results (mean values and COV) of the total work of fracture and the size-independent fracture energy for the different SCC mixes considering the correction to fit the tail of the P-δ curve. The results are similar to those found by other authors for similar strength SCC mixes [22][23][24]. It should be noted that results showed in Table 4 are those obtained for a value of δ 0 corresponding to the 5% of the peak load.…”

Section: Resultssupporting

confidence: 91%

Fitting the fracture curve of concrete as a density function pertaining to the generalized extreme value family

Canteli¹,

Castanon-Jano²,

Cifuentes³

et al. 2017

Materials & Design

Self Cite

View full text Add to dashboard Cite

The load-displacement (P-δ) curve, recorded during the fracture process of concrete in three-point bending tests, is supposed to depict a fracture phenomenon of statistical character that can be suitably described by a density function pertaining to the generalized extreme value family, which proves to be maximal Fréchet, as a particular case of heavy tail distributions. Since the proposed analytical function fits the test record throughout, the nonmeasured fracture work, corresponding to the upper asymptotic tail of the fracture curve P-δ, is expected to be measured in a more reliable and accurate way than using other methods currently recommended to evaluate the total fracture energy of concrete. The general scale parameter Ω, identified as the area under the fracture curve, and the three parameters of the Fréchet density function are estimated by fitting the recorded data to the experimental P-δ curve using a specific Matlab program. The model is applied to fit experimental fracture curves from an ample 3-PB test program on notched specimens for different self-compacting concrete mixes. The results obtained for the size-independent specific fracture energy are compared with those provided by other wellestablished conventional approaches. In both instances, the suitability of the proposal is confirmed.

show abstract

Section: Resultssupporting

confidence: 91%

Fitting the fracture curve of concrete as a density function pertaining to the generalized extreme value family

Canteli¹,

Castanon-Jano²,

Cifuentes³

et al. 2017

Materials & Design

Self Cite

View full text Add to dashboard Cite

show abstract

“…(1) and (4) and MCT3D Eqs. (3) and (6). Evaluation of MCT data for HSC is done by using two different calibration curves, the first one for CT specimen Eqs.…”

Section: Evaluation Of Measured Datamentioning

confidence: 99%

“…The results were determined from the aforementioned model for 2D and 3D simulations and discussed the obtained values. In this paper, experimental measured data from tests performed by Cifuentes et al [5,6] to assess the use of MCT test for measuring the fracture energy (GF) on normal-strength concrete (NSC) and high-strength concrete (HSC) will be processed and analyzed for various crack length to width ratios and the values of fracture mechanics parameters (K I and T-stress) will be evaluated and discussed using the outputs-calibration curves-from previous performed numerical simulations. Afterwards, an assessment of all procedures used to calculate fracture parameters will be performed.…”

Section: Introductionmentioning

confidence: 99%

Comparison of fracture toughness values of normal and high strength concrete determined by three point bend and modified disk-shaped compact tension specimens

Seitl

Ríos

Cifuentes

2017

Frattura Ed Integrità Strutturale

Self Cite

View full text Add to dashboard Cite

ABSTRACT. The modified disk shaped compact tension test is a configuration derived from standard compact tension test that is used for measuring fracture mechanical properties of primarily metallic materials. The compact tension configuration is commonly used for measurement fracture mechanical properties as e.g. fracture toughness, Young's modulus, work of fracture etc. The modified compact tension tests imply significant modifications of the specimen morphology in order to avoid premature failure. The modified compact tension test is not proper for quasi-brittle materials due to its complicated shape (steel-concrete interface), but it is easily extracted from drill core and we do not need large amount of material for obtaining fracture properties as we need for e.g. three-or four-point bend test. Since it is a new test method, a wide range of tests is needed to be done before it can be applied. In the paper the selected outputs of the experiments performed on normal and high strength concrete will be processed and the values of fracture mechanical parameters will be discussed.

show abstract

“…Polypropylene fibers are chemically inert, fiber molecules do not contain reaction groups. In this regard, these fibers are not subject to chemical corrosion [12,17]. This type of fiber is hydrophobic, which positively affects the water resistance of products reinforced with polypropylene fibers.…”

Section: Introductionmentioning

confidence: 99%

Water-resistant fiber-reinforced gypsum cement-pozzolanic composites

et al. 2019

View full text Add to dashboard Cite

Gypsum and gypsum-cement-pozzolanic composites are of significant interest as materials and products for building decoration. The current tendency to reduce the consumption of gypsum-based materials and products in the context of growth and development of the finishing materials market depends on the decrease in their competitiveness compared to peers. This leads to significant interest in improving the quality of products based on gypsum and gypsum-cement-pozzolanic binder. Dispersed reinforcement is one of the ways of improving performance characteristics. The role of the type of reinforcing fibers in the formation of the gypsum-cement-pozzolanic composites structure and properties is studied in article. The influence relations of the cellulose fibers content with varying grinding degrees on the relative flexural and compressive strength of a gypsum-cement-pozzolanic matrix are obtained. It was found that the optimal content of cellulose fibers in the modified gypsum-cement-pozzolanic matrix is 0.5-1% by weight of the binder, the best indicators of flexural and compressive strength are achieved by grinding cellulose fibers to 30°SR. Using scanning electron microscopy, it was found that the microstructure of a disperse-reinforced gypsum-cementpozzolanic matrix is characterized by a uniform cellulose fibers distribution, the predominance of directionally frame reinforcement with a fibers linear orientation in the sheet plane. In this way the right choice of the type, crushing degree and cellulose fibers content can improve the quality and expand the application area of the produced gypsum-cementpozzolanic composites.

show abstract

Modified Disk-Shaped Compact Tension Test for Measuring Concrete Fracture Properties

Cited by 25 publications

References 38 publications

Fitting the fracture curve of concrete as a density function pertaining to the generalized extreme value family

Fitting the fracture curve of concrete as a density function pertaining to the generalized extreme value family

Comparison of fracture toughness values of normal and high strength concrete determined by three point bend and modified disk-shaped compact tension specimens

Water-resistant fiber-reinforced gypsum cement-pozzolanic composites

Contact Info

Product

Resources

About