A Weibull distribution-based method for the analysis of concrete fracture

Li, Lielie; Guan, Junfeng; Yuan, Pingzhi; Yin, Yanan; Li, Yue

doi:10.1016/j.engfracmech.2021.107964

Cited by 31 publications

(10 citation statements)

References 33 publications

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“…The answer to the original question, as to whether the specimen size for the compression strength can be The mean values of the fracture toughness tests were found to be similar for both specimen thicknesses. The values 3.2 MPa m 0.5 and 4.5 MPa m 0.5 fall within a realistic range when compared to values from literature [12,17]. However, the results are not yet significant enough to rule out a size effect in fracture toughness.…”

Section: Resultssupporting

confidence: 65%

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Fracture toughness on compact tension specimen as a quality parameter for cement stone

Gierth,

Syring,

Mielke

et al. 2023

ce papers

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A series of tests of compression strength and fracture toughness of hardened cement paste (cement stone) was carried out. The compression strength was tested on cubes with side lengths of 10, 20, 30 and 40 mm. Fracture toughness was measured on compact tension (CT) specimens with dimensions commonly used in metallurgy; two different thicknesses were used (h x l x b: 50 x 48 x 3 mm3 and 50 x 48 x 8 mm3). A particularly stiff piezo‐controlled test frame was used as testing device. The different thicknesses of the specimens allow the investigation of a possible size effect in toughness. In a Weibull statistical evaluation, the scatter of the strength results is compared with the scatter of the measured toughnesses. It could be shown that the fracture toughness results are as reliable as the strength results and the method is a useful addition to the research on fracture of binders.

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Section: Resultssupporting

confidence: 65%

“…It is a common tool in concrete fracture as well to analyze both, fracture toughness and strength. Li et al were able to predict peak loads of concrete strength and toughness with a 95 % reliability using the three-parameter Weibull model [12]. There are many other examples, especially for the analysis of strength.…”

Section: Introductionmentioning

confidence: 99%

Fracture toughness on compact tension specimen as a quality parameter for cement stone

Gierth,

Syring,

Mielke

et al. 2023

ce papers

View full text Add to dashboard Cite

show abstract

“…The results of the mechanical tests at 45 d were analysed according to Weibull statistics, which is often used to study the failure of brittle materials and that can also describe accurately the failure occurring in concrete [27]. To extrapolate the desired parameters the Weibull function was linearised:…”

Section: Mechanical Testsmentioning

confidence: 99%

Effect of Fibrillated Cellulose on Lime Pastes and Mortars

2022

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The use of nanocellulose in traditional lime-based mortars is a promising solution for green buildings in the frame of limiting the CO2 emissions resulting from Portland Cement production. The influence of the fibrillated cellulose (FC) on lime pastes and lime-based mortars was studied incorporating FC at dosages of 0%, 0.1%, 0.2% and 0.3wt% by weight of binder. The lime pastes were subjected to thermal and nitrogen gas sorption analyses to understand if FC affects the formation of hydraulic compounds and the mesoporosities volume and distribution. The setting and early hydration of the mortars were studied with isothermal calorimetry. The mechanical performances were investigated with compressive and three-point-bending tests. Furthermore, fragments resulting from the mechanical tests were microscopically studied to understand the reinforcement mechanism of the fibres. It was found that 0.3wt% of FC enhances the flexural and compressive strengths respectively by 57% and 44% while the crack propagation after the material failure is not affected.

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“…Concrete is a typical quasi-brittle material. Like a rock, the strength distribution of concrete can be described by the Weibull distribution [55]. It is assumed that the basic parameters (i.e., N, N * , stress: σ, strain: ε, and damage variable: D) of the material follows the Weibull distribution.…”

Section: Derivation Of the Damage Stress-strain Curvementioning

confidence: 99%

Compressive Toughness Loss Rate and Softening Characteristic Analysis of Pasture Fiber-Rubber Powder Concrete

Wang

Yang

2022

Advances in Materials Science and Engineering

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To develop the utilization of pasture fibers and waste tire rubber powder, the effect of different blending levels of modified pasture fibers (2 kg/m3, 3 kg/m3, and 4 kg/m3) on the loss rate of compressive toughness and softening characteristics of rubber powder concrete was studied. In addition, RapidAir457 system imaging analysis and microscopic electron microscope photo analysis were carried out to analyze the distribution pattern of modified pasture fibers and rubber powder in concrete. The results show that the peak load of concrete is higher than other pasture fiber dosing test groups when 3 kg/m3 is incorporated in 20 mesh and 60 mesh rubber powder. With the increase of pasture fiber content, the compressive toughness loss of MC60 group and MC80 group increased first and then decreased. The softening curve analysis showed that MC-3 was more capable of absorbing damage energy in the strain range of 0.0005–0.0009 than the MC-2 group. According to the RapidAir457 system imaging analysis, the pasture fibers form a web-like organization inside the concrete when the pasture fiber is mixed at 3 kg/m3.

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A Weibull distribution-based method for the analysis of concrete fracture

Cited by 31 publications

References 33 publications

Fracture toughness on compact tension specimen as a quality parameter for cement stone

Fracture toughness on compact tension specimen as a quality parameter for cement stone

Effect of Fibrillated Cellulose on Lime Pastes and Mortars

Compressive Toughness Loss Rate and Softening Characteristic Analysis of Pasture Fiber-Rubber Powder Concrete

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