Numerical and experimental investigation of mode I cracking of asphalt concrete using semi-circular bending test

Somé, Sâannibè Ciryle; Feeser, Arnaud; Pavoine, Alexandre

doi:10.1016/j.conbuildmat.2018.02.161

Cited by 31 publications

(9 citation statements)

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“…studied the effect of moderate temperature and void ratio on the fracture energy. Ozer Hasan studied that the use of recycle materials in the construction of bituminous concrete pavement improves the sustainability of pavement [6][7]. However, literature study shows that mixed mode failure of plastic modified bituminous concrete at intermediate temperature rarely investigated.…”

Section: Stress Intensity Factormentioning

confidence: 99%

Evaluation of Crack Potency in the Bituminous Concrete using Fracture Mechanics Parameters

2020

CERJ

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Fatigue cracking is very critical among all types of distresses in pavements once the fatigue crack start in pavement it led to fast pavement deterioration and thus reduced the life of pavement and quality of riding on pavement. Thus, to control such distress it is necessary to understand the mechanics behind such crack initiation and propagation and to find the fracture parameters to choose best mixture to resist the failure. There are various methods to understand the fracture properties of the bituminous concrete (BC) mix. This paper describes the semi-circular bending test for BC mix, which was designed to be very effective, and user friendly. This method is adopted because it simulates the field conditions and its availability. Semi-circular samples of forty-eight were prepared out of which half was made of unmodified bitumen and the rest were made of plastic modified bitumen. These all samples were then tested at different loading rates and value of load at each deflection is measured. Two fracture parameters like fracture energy and stress intensity factor are evaluated. The plastic modified bituminous concrete shows that the value of energy is increased 2 to 3 times than the unmodified bituminous concrete at intermediate temperature. Hence, plastic modified bituminous concrete has the greater cracking resistance potential.

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Section: Stress Intensity Factormentioning

confidence: 99%

Evaluation of Crack Potency in the Bituminous Concrete using Fracture Mechanics Parameters

2020

CERJ

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“…[12][13][14][15][16][17][18] Table 1 presents the mechanical properties of coarse aggregates and mastic utilized in this research for modelling the two-phase (aggregate-mastic) asphalt mixture. Mastic behaves as a visco-elastic material at high temperatures and rutting is the most important deterioration mode of asphalt pavement.…”

Section: The Finite Element Model and Numerical Simulationmentioning

confidence: 99%

“…This assumption has been used in AASHTO TP 105-13 and many other research works for determining the critical stress intensity factor of cracked asphalt specimens. [12][13][14][15][16][17][18] Table 1 presents the mechanical properties of coarse aggregates and mastic utilized in this research for modelling the two-phase (aggregate-mastic) asphalt mixture. [44][45][46] The aggregates and mastic were assumed to be perfectly bounded.…”

Section: The Finite Element Model and Numerical Simulationmentioning

confidence: 99%

“…Annually, a lot of money is spent for the design, construction, maintenance and rehabilitation of roads. [7][8][9][10][11][12][13][14][15][16][17] In some of the aforementioned experimental studies, the researchers have tried to obtain the critical stress intensity factors of asphalt mixtures using the SCB specimen. [4][5][6] Cracking mostly occurs in cold climates, where asphalt behaves as a linear elastic material.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, a large number of experiments have been conducted on asphalt mixtures to evaluate the effect of mechanical properties of different subsets of asphalt layer on the critical stress intensity factors. [7][8][9][10][11][12][13][14][15][16][17] In some of the aforementioned experimental studies, the researchers have tried to obtain the critical stress intensity factors of asphalt mixtures using the SCB specimen. Accordingly, the following relations have been used for calculating the fracture toughness (K Ic and K IIc ) of SCB specimen.…”

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Heterogeneity effects on mixed‐mode I/II stress intensity factors and fracture path of laboratory asphalt mixtures in the shape of SCB specimen

Aliha

Ziari

Mojaradi

et al. 2019

Fatigue Fract Eng Mat Struct

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Edge cracked semi-circular shape specimen subjected to three point bend loading is a favourite test specimen for determining fracture toughness of asphalt mixtures. However, in the vast majority of previous experimental works, the homogeneous medium assumption has been considered for determining the stress intensity factor and geometry factors of asphalt mixtures tested with this test configuration. As a more realistic model and in order to consider the effects of heterogeneity on corresponding values of stress intensity factors, the asphalt mixture was modelled as a two-phase aggregate/mastic heterogeneous mixture and its fracture behaviour was investigated using numerical models of asymmetric semi-circular bend (ASCB) specimens. The generation and packing algorithm was employed to randomly distribute the aggregates with different shapes and sizes inside the mastic part. The effect of the mechanical properties of asphalt mixture (elastic modulus and the Poisson's ratios of aggregates and mastic), coarse aggregates distribution and crack length were studied on modes I and II geometry factors by means of extensive twodimensional finite element analyses. Moreover, the effect of the elastic modulus of asphalt mixture components was evaluated on the fracture path using the maximum tangential stress criterion. It was shown that crack tip location, elastic modulus of aggregates and mastic are the most important affecting parameters on the magnitude of modes I and II geometry factors. It was also shown that the geometry factors are not sensitive to the Poisson's ratios of aggregates and mastic. In addition, fracture cracking path is affected by the elastic modulus of the asphalt mixture components such that, depending on the difference between the stiffness of stiffer coarse aggregates and softer NOMENCLATURE: K I , K II , stress intensity factors of modes I and II; K Ic , K IIc , critical stress intensity factors of modes I and II; Y I , Y II , geometry factors of modes I and II; P, applied load; P c , critical fracture load; R, radius of the SCB specimen; t, thickness of the SCB specimen; E, Young's modulus; E agg , Young's modulus of aggregates; E mastic , Young's modulus of mastic; E interface , Young's modulus of interface; D, distribution of aggregates in the SCB sample; Xi, Yi, Cartesian coordinate of new generated aggregate; R i , radius of new generated aggregate; X j , Y j , Cartesian coordinate of generated aggregate in the previous steps; R j , radius of generated aggregate in the previous steps; a, crack length; S 1 , S 2 , bottom support distances; S 1 /R, S 2 /R, bottom support distances over the radius ratios; A ij , area of aggregate j in group i; A i max , maximum summation area of aggregates in group i; A i min , minimum summation area of aggregates in group i; SCB, semicircular bending sample; MTS, maximum tangential stress; HMA, hot mix asphalt; SIF, stress intensity factor

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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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Numerical and experimental investigation of mode I cracking of asphalt concrete using semi-circular bending test

Cited by 31 publications

References 31 publications

Evaluation of Crack Potency in the Bituminous Concrete using Fracture Mechanics Parameters

Evaluation of Crack Potency in the Bituminous Concrete using Fracture Mechanics Parameters

Heterogeneity effects on mixed‐mode I/II stress intensity factors and fracture path of laboratory asphalt mixtures in the shape of SCB specimen

The Influential Factors of Semi-Flexible Pavement Cracking Performance

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