Development of an index to evaluate the cracking potential of asphalt mixtures using the semi-circular bending test

Kaseer, Fawaz; Yin, Fan; Arámbula-Mercado, Edith; Martin, Amy Epps; Daniel, Jo Sias; Salari, Saman

doi:10.1016/j.conbuildmat.2018.02.014

Cited by 158 publications

(49 citation statements)

References 5 publications

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“…The CRI index was recently developed by Kaseer et al For mid‐temperature 66 ; which, while simple, can be calculated by dividing the fracture energy by the peak load (Equation 8):

italicCRI = \frac{G_{f}}{P_{italicmax}}

According to this, a higher CRI magnitude means a more reliable asphalt mixture in terms of resistance to cracking for flexible mixtures and Vic versa for brittle mixtures.…”

Section: Methodsmentioning

confidence: 99%

Pure mode I and pure mode II fracture resistance of modified hot mix asphalt at low and intermediate temperatures

Zarei

Kordani

Zahedi

2021

Fatigue Fract Eng Mat Struct

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Angular cracks are one of the types of cracks in asphalt mixtures that can be created due to the location of coarse aggregates as well as the weakness of the soft asphalt matrix (SAM). In this study, pure mode I was modeled to simulate the fracture behavior of hot mix asphalt (HMA) mixture containing angular cracks using the extended finite element method (XFEM). To improve HMA performance, calcium lignosulfonates (CL) additive and polyester fiber (PE), which were both environmentally and economically justifiable, were used. Numerical and experimental results showed that the proposed samples in both pure mode I (angular crack) and pure mode II (vertical crack) were able to model the fracture behavior of HMA; therefore, it can be used as suitable samples to study the pure mode crack deformation of HMA at low and intermediate temperatures. Also, the presence of coarse aggregate in the ligament section of the samples turned out to be an important factor in increasing fracture energy, fracture toughness, and reducing brittleness.

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“…The CRI index was recently developed by Kaseer et al For mid‐temperature 66 ; which, while simple, can be calculated by dividing the fracture energy by the peak load (Equation 8):

italicCRI = \frac{G_{f}}{P_{italicmax}}

According to this, a higher CRI magnitude means a more reliable asphalt mixture in terms of resistance to cracking for flexible mixtures and Vic versa for brittle mixtures.…”

Section: Methodsmentioning

confidence: 99%

Pure mode I and pure mode II fracture resistance of modified hot mix asphalt at low and intermediate temperatures

Zarei

Kordani

Zahedi

2021

Fatigue Fract Eng Mat Struct

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“…In which: FI 50 = corrected index value using 50 mm as the reference thickness; FI t = calculated FI value for specimen with average thickness; and t = average specimen thickness (mm). Further investigations evaluated the effect of air void content on the I-FIT parameters (3)(4)(5). Barry reported a consistent decrease in peak load with increased air void content (5).…”

Section: Cri =mentioning

confidence: 99%

“…Generally, the higher the fracture energy, the better the cracking resistance. However, it has been observed that mixtures that exhibit the opposite behavior may present similar fracture energy values ( 3 ). For instance, in the I-FIT, a brittle material, usually manifested by a high peak load and low ductility, may have a similar fracture energy to a material with high ductility and a lower peak load ( 3 ).…”

Section: Introductionmentioning

confidence: 99%

“…However, it has been observed that mixtures that exhibit the opposite behavior may present similar fracture energy values ( 3 ). For instance, in the I-FIT, a brittle material, usually manifested by a high peak load and low ductility, may have a similar fracture energy to a material with high ductility and a lower peak load ( 3 ). To differentiate between the materials, additional characteristics from the I-FIT are used to more accurately assess the cracking resistance of asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have shown that I-FIT can be used to distinguish differences in asphalt mixture properties ( 1 – 4 ). For example, it has been reported that the FI has an excellent discrimination potential when analyzing laboratory-produced asphalt mixtures that contain high levels of recycled materials and long aging times ( 5 , 6 ).…”

Section: Introductionmentioning

confidence: 99%

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Understanding the Illinois Flexibility Index Test (I-FIT) using Indiana Asphalt Mixtures

Batioja-Alvarez

Lee

Haddock

2019

Transportation Research Record

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Asphalt mixture cracking has become the dominant type of asphalt pavement distress in Indiana. In recent years, efforts have shifted away from the standard Superpave mixture design method in search of methods to improve the resistance of asphalt pavements to cracking-related distress. This paper presents a review of the applicability of the Illinois Flexibility Index Test (I-FIT) to evaluate the cracking potential of Indiana asphalt mixtures. In this study, two cracking indices were compared: the flexibility index (FI) and the cracking resistance index (CRI), both derived from the load-displacement curve. The applicability of quality assurance (QA) tests of laboratory-compacted and field-compacted samples was also explored to evaluate the cracking potential, and I-FIT was investigated for its applicability as a performance-related quality control (QC)/QA test. The results show that the FI values obtained from field-compacted samples were consistently higher than those of the lab-compacted samples. Both the FI and CRI values were significantly affected by variations in specimen thickness and air void content, with higher FI values observed with an increase in the air void content and a decrease in specimen thickness. The CRI values were less sensitive to I-FIT variability and more repeatable compared to the FI values. Finally, as an illustrative example, the cumulative distribution function of the FI values for a population of asphalt concrete (AC) mixtures was used to establish the different ranges for the quality thresholds of the materials.

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The Influential Factors of Semi-Flexible Pavement Cracking Performance

Xiong

Gong

Hong

et al. 2022

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Development of an index to evaluate the cracking potential of asphalt mixtures using the semi-circular bending test

Cited by 158 publications

References 5 publications

Pure mode I and pure mode II fracture resistance of modified hot mix asphalt at low and intermediate temperatures

Pure mode I and pure mode II fracture resistance of modified hot mix asphalt at low and intermediate temperatures

Understanding the Illinois Flexibility Index Test (I-FIT) using Indiana Asphalt Mixtures

The Influential Factors of Semi-Flexible Pavement Cracking Performance

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