Investigation of fracture modes in pervious asphalt under splitting and compression based on acoustic emission monitoring

Jiao, Yanpeng; Zhang, Yao; Zhang, Mengsu; Fu, Liuxu; Zhang, Youmin

doi:10.1016/j.engfracmech.2019.02.025

Cited by 47 publications

(11 citation statements)

References 28 publications

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“…Rise angle (RA) and average frequency (AF), as well-known features, have been proved to be the key parameters to characterize the tensile and shear modes [ 38 ]. RA and AF are obtained from the AE basic parameters, which can be expressed as follows:

…”

Section: Methodsmentioning

confidence: 99%

“…However, the slope of the general boundary line has not been given owing to the differences in geometry, structure, and material of the specimens. In this paper, a new method, similar to the k -medoids clustering algorithm, was proposed to determine the slope [ 38 ]. The objective function was described as the dissimilarity of all objects in the clusters and calculated by giving the specific slopes (from 0.1 to 1, 0.1 increment; from 1.0 to 10.0, 1.0 increment).…”

Section: Methodsmentioning

confidence: 99%

“…Nowadays, some studies demonstrated the feasibility of the AE technique in PAM with heterogeneity and stone-on-stone interlocked structure, and reported that AE possesses great potential in real-time crack monitoring and fracture characterization of PAM, especially in complicated environments. Jiao et al [ 37 , 38 ] investigated the damage evolution and fracture modes of PAM under low-temperature splitting with the aid of the AE technique. Cai et al [ 39 ] found that the incorporation of lignin fiber can significantly delay the growth of shear cracks along the interface under uniaxial compression by employing the AE technique, and stated that AE can effectively compensate for the deficiency of mechanical experiments and theoretical models.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Zhu

Liu

et al. 2020

Sensors

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Acoustic emission (AE), as a nondestructive testing (NDT) and real-time monitoring technique, could characterize the damage evolution and fracture behavior of materials. The primary objective of this paper was to investigate the improvement mechanism of steel slag on the low-temperature fracture behavior of permeable asphalt mixtures (PAM). Firstly, steel slag coarse aggregates were used to replace basalt coarse aggregates with equal volume at different levels (0%, 25%, 50%, 75%, and 100%). Then, the low-temperature splitting test with slow loading was used to obtain steady crack growth, and the crack initiation and propagation of specimens were monitored by AE technique in real time. From the low-temperature splitting test results, SS-100 (permeable asphalt mixtures with 100% steel slag) has the optimal low-temperature cracking resistance. Therefore, the difference of fracture behavior between the control group (permeable asphalt mixtures without steel slag) and SS-100 was mainly discussed. From the AE test results, a slight bottom-up trend of sentinel function was founded in the 0.6–0.9 displacement level for SS-100, which is different from the control group. Furthermore, the fracture stages of the control group and SS-100 could be divided based on cumulative RA and cumulative AF curves. The incorporation of 100% steel slag reduced the shear events and restrained the growth of shear cracking of the specimen in the macro-crack stage. Finally, the considerable drops of three kinds of b-values in the final phase were found in the control group, but significant repeated fluctuations in SS-100. In short, the fracture behavior of PAM under low temperature was significantly improved after adding 100% steel slag.

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…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Zhu

Liu

et al. 2020

Sensors

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show abstract

“…Normally, there exist two typical waveforms: one exhibits high amplitude, short rise time and high energy (correspond to the mode I tensile cracking); another is less burst and shows longer rise time and duration time, but lower frequency (related to the mode II shear (or mixed mode) cracking). 39 Based on the parameters proposed for the waveform description (RA = rise time/peak amplitude; AF = counts/duration), the released AE signals of S-C and S-TC are divided into two categories. The proportions of tensile cracking occurring at each loading cycle are shown in Figure 12B.…”

Section: Damage Accumulation During Mechanical Cyclic Loadingmentioning

confidence: 99%

Fracture behavior of magnesia refractory materials under combined cyclic thermal shock and mechanical loading conditions

Dai

Jin

et al. 2019

J Am Ceram Soc

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To investigate the effect of cyclic thermal shock and mechanical loading on the fracture behavior of magnesia refractories showing different brittleness, the as‐received and cyclic thermally shocked specimens are subjected to monotonic and cyclic wedge splitting test. The whole duration of test is monitored by digital image correlation and acoustic emission. Both thermal and mechanical fatigue resistance increase with the reduction of brittleness. Repetitive thermal shock results in pronounced reduction of strength. However, the specific fracture energy and nonlinearity increase after exposure to thermal shock due to the expanded micro‐crack network inducing the development of a significant fracture process zone. Periodic loading mainly leads to the decrease of strain bearing capacity, as the fatigue loads favor the extension of crack tip instead of fracture process zone expansion. The combined application of periodic thermal shock and mechanical loads gives a new insight into the progressive damage behavior of refractory under critical conditions.

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“…However, although the application of AE technology to asphalt concrete started late, much attention has been paid to the characterization of the fracture behavior of asphalt concrete through variation in AE parameters and research on the AE source location of fracture points. Jiao et al [8][9][10] carried out compression and splitting tests on permeable asphalt mixtures, and obtained the evolution law of each AE parameter. The results showed that the variation characteristics of each parameter had a certain relationship with the macro damage of the asphalt mixture, and thus AE technology has great potential in the damage characterization of asphalt concrete.…”

Section: Introductionmentioning

confidence: 99%

Study on Acoustic Emission Characteristics of Low-Temperature Asphalt Concrete Cracking Damage

Yang

et al. 2021

Materials

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In this study, asphalt concrete specimens were subjected to a semicircle bending test at −10 °C to simulate the process of the development of cracks in asphalt concrete at low temperature. The acoustic emission parameters were collected during the test, the variation characteristics of acoustic emission parameters were analyzed, and the peakedness value was introduced to evaluate the damage of asphalt concrete. The dynamic evolution of fracture development was analyzed by periods with acoustic emission source location. The results indicate that the damage of asphalt mixtures shows an obvious brittle characteristic at low temperature, acoustic emission signals mainly originate from the crack damage caused by tensile stress, and the strength and number of signals can reflect the degree of crack development. Based on acoustic emission parameters and load curves, the cracking damage of asphalt concrete at low temperature in this study can be divided into three periods: a calm period, a stable development period, and a rapid fracture period. The crack point occurred and propagated upward rapidly in the rapid fracture period. During this period, acoustic emission parameters such as ringing count, acoustic emission energy, and amplitude increased suddenly; furthermore, the peakedness value reached its peak in this period and corresponded well with the low-temperature damage of asphalt concrete. Acoustic emission source location technology can track position of crack points and the propagation path of cracks, reflecting the dynamic evolution process of asphalt concrete crack damage at low temperature.

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Investigation of fracture modes in pervious asphalt under splitting and compression based on acoustic emission monitoring

Cited by 47 publications

References 28 publications

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Fracture Behavior of Permeable Asphalt Mixtures with Steel Slag under Low Temperature Based on Acoustic Emission Technique

Fracture behavior of magnesia refractory materials under combined cyclic thermal shock and mechanical loading conditions

Study on Acoustic Emission Characteristics of Low-Temperature Asphalt Concrete Cracking Damage

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