Characterization of fatigue damage mechanism of asphalt mixtures with acoustic emission

Qiu, Xin; Xu, Jingxian; Xu, Wenqiang; Xiao, Shanglin; Wang, Feng; Yuan, Jie

doi:10.1016/j.conbuildmat.2019.117961

Cited by 34 publications

(12 citation statements)

References 31 publications

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“…From the perspective of energy failure, when the locally stored strain energy exceeded the allowable local strain energy of the materials, the local fractures of material occurred. Then, the instantaneous stress waves could be captured by the AE sensor (piezoelectric transducer) on the surface of the material and then were transformed into electrical signals [ 32 ]. As AE energy was the integration along amplitude and time, not the integration along load and displacement in the traditional sense, cumulative AE energy and fracture energy were two different physical concepts, but they presented similar changing trends in low-temperature splitting test.…”

Section: Resultsmentioning

confidence: 99%

“…When the specimens are subjected to external loads, some fracture modes, including shear cracks and tensile cracks, occur. The shapes of AE waveforms are associated with the fracture modes of shear and tensile cracks [ 32 ]. The tensile cracks can excite energy in the form of longitudinal wave and cause the volume change of material.…”

Section: Methodsmentioning

confidence: 99%

“…The spatial evolution process of internal micro-cracks was tracked by the AE localization technique. Qiu et al [ 32 , 33 ] utilized AE energy and b -value to monitor and evaluate the fatigue damage behavior of asphalt mixtures. Then, the fractal dimension of the AE waveform after wavelet transform was used to identify the damage critical state.…”

Section: Introductionmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…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. Qiu et al [11,12] studied the continuous damage evolution behavior of an asphalt mixture and located the damage position using AE location technology. The results indicate that acoustic emission technology can characterize the fracture behavior of asphalt mixtures.…”

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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“…Qiu studied the variation characteristics of AE parameters during the beam bending test of asphalt concrete; in addition, the scale invariance of AE and the abrupt change of AE under damage were studied. The results showed that the abrupt rise of waveform fractal dimension from the minimum value was related to the critical fracture condition of asphalt concrete, and the recommended sampling frequency of AE test for asphalt concrete is 1 MHz [ 19 , 20 , 21 ]. Cai used Weibull distribution to characterize the damage evolution of asphalt concrete, in which the cumulative energy was selected as the damage variable.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Basalt Fiber Crack Resistance of Asphalt Concrete Based on Acoustic Emission

Yang

et al. 2021

Materials

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In this study, the semicircle three-point bending tests of ordinary asphalt concrete and basalt fiber asphalt concrete were carried out and acoustic emission parameters were collected during the test. The differences of the characteristics of acoustic emission parameters between basalt fiber asphalt concrete and ordinary asphalt concrete were analyzed, and the damage stages were divided based on the variation of acoustic emission parameters; Rise Angle and Average Frequency were introduced to study the cracking mode and crack resistance mechanism of asphalt concrete with basalt fiber. The results show that the acoustic emission parameters can well represent the toughening and crack resistance effect of basalt fiber in asphalt concrete, and the damage stages can be divided into three stages: microcrack initiation stage, fracture stage, and residual stage. The duration of the fracture stage and the load resistance time of the specimen were greatly prolonged. The proportion of shear events in the whole failure process increased greatly after the basalt fibers were added, especially in the fracture stage, which reduced the tensile failure tendency of the specimens, and thus improved the bending and tensile performance of the specimens and played a toughening and crack resistance role in the fracture stage.

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Characterization of fatigue damage mechanism of asphalt mixtures with acoustic emission

Cited by 34 publications

References 31 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

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

Experimental Study on Basalt Fiber Crack Resistance of Asphalt Concrete Based on Acoustic Emission

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