Studying the strain field distribution of asphalt mixture with the digital speckle correlation method

Tan, Yiqiu; Hou, Minghao; Zhang, Lei; Zhang, Kui

doi:10.1080/14680629.2013.863159

Cited by 16 publications

(9 citation statements)

References 13 publications

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“…For LVDT deformation test, the gauge length is 25.4 mm which cannot cover all the deformation, it will cause measurement error. Previous study [8] show that the strain change out of the centre 30 mm area is minimal, this value is enough for AC, however, it cannot satisfy the measurement area requirement, especially for mixture with larger NMAS. Because of the aggregate movement in the failure process, the strain at the edge of sample is compression strain which can be found in Fig.8, therefore, larger measuring length will cause error due to compression strain.…”

Section: Peak Strain Position and Failure Regionmentioning

confidence: 91%

“…Seo [6] first used DIC technique as a possible displacement/strain measurement method for asphalt mixture. Tan [7][8] compared DIC method with LVDT and determined the minimum calculation gauge length of the indirect tensile (IDT) test, according to the strain field obtained by DIC, it was found that the Poisson ratio was not a constant. Many researchers [9][10][11][12] investigated fracture phenomena in asphalt material based on DIC method.…”

Section: Introductionmentioning

confidence: 99%

“…(a) Horizontal strain field (b) Local strain field Fig.7 Strain field of IDT testTan[8] investigated the horizontal tensile deformation by DIC, the results showed that the tensile strain was small beyond the centre 30 mm area, 30 mm area in the centre of the specimen was suggested as the minimum calculation (gauge) length. The centre 30mm area include most deformation, however, large aggregate will make the deformation concentration area uncertain.…”

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confidence: 99%

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Research on local deformation property of asphalt mixture using digital image correlation

Xing

Tan

Liu

et al. 2017

Construction and Building Materials

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Failure behavior of asphalt mixture is the process of local deformation accumulation, therefore, local deformation investigation is the base work of failure behavior. Digital image correlation (DIC) method is an optical method which can calculate the local deformation in the failure process. This paper aims to evaluate the precision, select the optimal test parameters for DIC deformation measurement based on natural speckle image, and investigate the local deformation characteristic in the failure process for different mixtures. The results show the image quality of AC with smaller normal maximum aggregate size (NMAS) is better for DIC deformation calculation, the relative deviation of virtual translation and shear test can satisfy the precision requirement, the optimal subset size is 31. Based on the strain distribution, the optimal local deformation measure length for indirect tensile test is set as 50mm, the critical steady strain is proposed based on R 2 obtained by the least squares fitting method, according to local deformation characteristic, the results show SMA can bear more deformation before unstable deformation stage and failure.

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Section: Peak Strain Position and Failure Regionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Research on local deformation property of asphalt mixture using digital image correlation

Xing

Tan

Liu

et al. 2017

Construction and Building Materials

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“…A series of water conditioning devices were developed [59][60][61][62] to simulate the environment of dynamic pore water pressure and evaluate the service life of asphalt materials. Multi-scale experiments were correspondingly conducted to investigate moisture damage issues [59,63,64]. Service properties of asphalt mixture such as mechanical strength, high temperature stability, low temperature cracking resistance and fatigue resistance were affected by environmental parameters of dynamic pore water pressure, which included magnitude, frequency, water temperature and duration [65].…”

Section: Influence Of Intense Rainfall On Service Life Of Asphalt Pavmentioning

confidence: 99%

A survey on the influence of intense rainfall induced by climate warming on operation safety and service life of urban asphalt pavement

Wang

Miao

et al. 2020

J Infrastruct Preserv Resil

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Intense rainfall induced by climate warming is causing more common extreme meteorological events such as urban waterlogging in recent years. The urban waterlogging often has a wide-ranged severe impact on urban traffic. General intense rainfall weather makes urban transportation frequently be served in an environment with abundant water, which not only affects its operation safety but also challenges the service life of urban asphalt pavement. This paper presents a comprehensive survey on the influence of intense rainfall on urban transportation. The characteristics of meteorological phenomena such as climate warming, intense typhoon and rainfall, and urban waterlogging are firstly discussed. Then, Shenzhen, the city in south China, is chosen to analyze its historical meteorological variation in recent years, which was recently affected by a typhoon name Ewiniar in 2018 and caused severe waterlogging throughout entire city. Further, the operation safety of urban traffic is investigated with an increasing depth of surface runoff in intense rainfall weather, followed by the service life of asphalt pavement related to the moisture damage induced by dynamic pore water pressure. Finally, a series of measures to alleviate the effects of intense rainfall induced by climate warming on urban waterlogging and long service life of asphalt pavement are recommended.

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“…To solve these issues, two-dimensional digital image correlation (2D-DIC) has been introduced to conduct mechanical testing on asphalt mixtures [20][21][22]. One of the applications of this method is to investigate the crack formation and propagation in asphalt pavements [23,24]. For instance, the cracking mechanism of different asphalt mixtures during three common fracture tests: the indirect tensile (IDT) test, the semi-circular bending (SCB) test, and the three-point bending (3PB) test have been investigated using the DIC technique [25].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Crack Propagation and Healing of Asphalt Concrete Using Digital Image Correlation

et al. 2019

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The fatigue performance and healing ability of asphalt pavements are important for mixture design, rehabilitation, and maintenance of the roads. By analyzing these parameters in an asphalt mixture, it is possible to predict the crack formation and propagation in asphalt pavements and healing of these cracks during the rest periods. The healing effect in asphalt mixtures has been observed and verified by many researchers and different methods exist to evaluate this phenomenon. However, current methods are still inadequate to fully observe and quantify the healing phenomenon in asphalt mixtures. In this study, a digital image correlation (DIC) method is used to calculate the strain map on the surface of cylindrical asphalt specimens during the indirect tensile fatigue test. This strain map is used to detect the location of crack initiations and development of the microcracks during the experiments. Next, the specimens are unloaded and the temperature of the climate chamber is increased to 60 °C for 18 h to investigate the healing phenomenon on the surface of the specimens. It is observed that the strain reduces near the microcrack areas especially at the tip of the microcracks. Furthermore, using DIC it is possible to observe the healing rate and the minimum time required to heal the microcracks on the surface of the specimens.

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Studying the strain field distribution of asphalt mixture with the digital speckle correlation method

Cited by 16 publications

References 13 publications

Research on local deformation property of asphalt mixture using digital image correlation

Research on local deformation property of asphalt mixture using digital image correlation

A survey on the influence of intense rainfall induced by climate warming on operation safety and service life of urban asphalt pavement

Investigation of Crack Propagation and Healing of Asphalt Concrete Using Digital Image Correlation

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