Development of the indirect ring tension fracture test for hot-mix asphalt

Zeinali, Alireza; Mahboub, Kamyar C.; Blankenship, Phillip B

doi:10.1080/14680629.2014.927051

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…Afterwards, some experimental testing methods and test samples including the edge cracked rectangular beam specimen subjected to four-point bend loading and the semi-circular bend (SCB) specimen were employed by Molennar et al [11,12] for investigating the mode I fracture of the asphalt mixtures. Other test configurations such as the modified indirect tensile disc (MITD) specimen [13], disc-shape compact-tension specimen [14], single edge notch beam (SENB) subjected to three-point bend [9,15], wedge splitting disc (WSD) [16], edge notch disc bend (ENDB) [17][18][19][20][21][22][23][24], edge notch disc diametral compression (ENDC) [25][26][27], center cracked Brazilian disc subjected to diametral compression [28], semi-circular bend (SCB) specimen [29][30][31][32][33][34], and hollow disc (or ring shape) specimen containing center crack and loaded diametrically [35] are some of the test configurations employed in the literature for investigating the fracture resistance of asphalt mixtures. Any of these test samples are suitable for simulating and conducting specific modes of fracture.…”

Section: Introductionmentioning

confidence: 99%

Contribution of Interface Fracture Mechanism on Fracture Propagation Trajectory of Heterogeneous Asphalt Composites

Liang

Yang

et al. 2021

Applied Sciences

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Asphalt mixture is a type of textured composite material made of aggregates and mastic part. Overall strength and failure behavior in such materials depends on the texture or heterogeneity of the mixture. In particular, the crack growth mechanism from the tip of the pre-crack is significantly affected by the texture of the asphalt composite and environmental conditions. The crack can extend through the soft mastic, tight aggregates or interface of the mastic/aggregates. In this research, by performing some fracture tests on a typical asphalt mixture with different test specimens under mode I, mixed mode I/II and mixed mode I/III, the fracture resistance and trajectory of propagating crack is studied at two low and medium temperatures (i.e., −15 and +15 °C). The load bearing capacity and the fracture resistance of the tested asphalt samples increases by decreasing the temperature. It is also shown that a significant part of fracture plane passes through the soft mastic and boundary of aggregates (i.e., the interface of aggregates and mastic) and only about 10–15% of the fracture surface of the propagating crack passes via the tight aggregates by breaking them. This percentage decreases for mode II and III loading conditions and higher testing temperatures. Compared to brittle and isotropic materials, the fracture path of the asphalt mixture shows more deviation, and this deviation increases for those mixtures containing coarser aggregates in the ligament and tested under medium temperature conditions.

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Section: Introductionmentioning

confidence: 99%

Contribution of Interface Fracture Mechanism on Fracture Propagation Trajectory of Heterogeneous Asphalt Composites

Liang

Yang

et al. 2021

Applied Sciences

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“…These approaches do not take into account the evolution of cracks with time and are not sensitive to polymer modification type or level [27][28][29][30]; thus, testing on a prenotched sample was proposed. Seven common and representative asphalt mixture fracture characterization methods on notched samples include the single-edge notched beam [31], semi-circular bending [32], the semi-circular tensile [33], the disk-shaped compact tensile [34], the indirect ring tensile [35], the double-edge notched tensile [36], and the restrained notched ring tests [37]. The advantages and disadvantages of these fracture mechanical-based test methods on notched samples are listed in Table 2.…”

Section: Cracking Characterization Of Asphalt Mixturementioning

confidence: 99%

Effects of Geometry and Loading Mode on the Stress State in Asphalt Mixture Cracking Tests

Li¹,

Xuan

Rahman

et al. 2022

Materials

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Currently, a variety of asphalt mixture cracking characterization tests are available as screening tools for the better selection of high-quality raw materials and also for the optimization of mixture design for different applications. However, for a same evaluation index, using different sample geometries and loading modes might lead to obtaining different values, which prevents the application of the evaluation index as a fundamental parameter in pavement design. In this paper, the effects of geometry and loading mode on the stress state in the experimental characterization of asphalt mixture cracking were discussed using numerical simulation. The results showed that applying thermally-induced load in restrained uniaxial test configuration should be considered when performing an asphalt mixture cracking test. Compared with direct tensile configuration, compressive stress clearly existed in other common test configurations, which may prevent the initiation and propagation of cracks. Moreover, it was revealed that nonuniform stress state exists in the dog-bone geometry, which makes it possible to know the failure plane in advance and place gauges at the failure plane for measuring fundamental deformation-related properties.

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“…31 In fact, these two test samples are among the most commonly used geometries for fracture toughness determination of asphalt concrete materials that have been employed by many researchers. [32][33][34][35][36][37][38][39][40][41][42][43][44][45] Other circular type samples, such as edge-notched disk bend (ENDB) specimen, 25,26,[46][47][48][49][50][51][52][53][54][55][56][57] center-cracked Brazilian disk (CCBD) loaded with two-diametral compressive forces, [58][59][60][61][62] edge-notched diametrally compressed disk (ENDC) specimen, 63,64 modified indirect tension disk (IDT) specimen, [65][66][67] V-notched disk wedge splitting (VWS) specimen, 68 and center-cracked ring (CCR) specimen loaded by diametral compression 69,70 are also most preferred test configurations for measuring the K Ic value in asphalt mixtures because they can be prepared from Marshall and Gyratory compacted cylindrical samples made of hot or warm mix asphalt mixtures or can be cored from the field and real pavements and overlays.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical framework for illustrating the dependency of fracture toughness with tensile, bending, and compression loading in asphaltic samples

Tan

Zhang

et al. 2023

Fatigue Fract Eng Mat Struct

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Opening mode fracture behavior of asphalt mixture is studied experimentally and theoretically using three full disk‐shaped specimens, namely, edge‐notched disk bend (ENDB), disk‐shaped compact tension (DCT), and center‐cracked Brazilian disk (CCBD). While the ENDB sample is subjected to pure bending, the BD and DCT specimens are loaded by diametral compression and pin loading tension, respectively. The experimental results showed the noticeable role of loading type on the cracking resistance of asphaltic mixtures such that the specimen loaded in diametral compression showed significantly smaller fracture toughness than the DCT specimen (that is loaded under tension). The KIc results determined from the ENDB also lie between the KIc of DCT and CCBD testing methods. The discrepancies observed between the experimental results of the three specimen types were related to different signs and magnitudes of T‐stress in these test samples. Accordingly, by taking into account the effect of such stress term via employing modified maximum normal strain theory, the mode I test data were predicted theoretically. Finally, the test data obtained from the CCBD and DCT samples were estimated in terms of the KIc of the ENDB specimen (as the reference sample).

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Development of the indirect ring tension fracture test for hot-mix asphalt

Cited by 6 publications

References 13 publications

Contribution of Interface Fracture Mechanism on Fracture Propagation Trajectory of Heterogeneous Asphalt Composites

Contribution of Interface Fracture Mechanism on Fracture Propagation Trajectory of Heterogeneous Asphalt Composites

Effects of Geometry and Loading Mode on the Stress State in Asphalt Mixture Cracking Tests

Experimental and theoretical framework for illustrating the dependency of fracture toughness with tensile, bending, and compression loading in asphaltic samples

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