Low-Temperature Fracture Testing of Asphalt Binders: Regular and Modified Systems

Hoare, Todd; Hesp, Simon A.M.

doi:10.3141/1728-06

Cited by 96 publications

(45 citation statements)

References 4 publications

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“…This approach has been applied to explore the mechanism of fracture in asphalt mixtures as early as in 1960s [6] and has become increasingly popular in the research community after 1990s [7][8][9][10][11][12][13][14][15]. There are many methods of fracture testing in hot mix asphalt (HMA), including the Single-Edge Notched Beam [12,14,16,17], the Semi-Circular Bend (SCB) [13,18,19], the IDT fracture parameter [20,21], and the Disc-Shaped Compact Tension Test (DCT) [15,22,23]. All of these mixture fracture tests have advantages and disadvantages [15].…”

Section: Introductionmentioning

confidence: 99%

Using Semi Circular Bending Test to Evaluate Low Temperature Fracture Resistance for Asphalt Concrete

Marasteanu

2009

Exp Mech

223

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This work presents a repeatable semi circular bending (SCB) fracture test to evaluate the low temperature fracture resistance of asphalt mixture. The fracture resistance of six asphalt mixtures, which represent a combination of factors such as binder type, binder modifier, aggregate type, and air voids, and two testing conditions of loading rate and initial notch length, was evaluated by performing SCB fracture tests at three low temperatures. Fracture energy was calculated from the experimental data. Experimental results indicated strong dependence of the low temperature fracture resistance on the test temperature. Experimental plots and low coefficient of variation (COV) values from three replicates show a satisfactory repeatability from the test. The results of the analysis showed that fracture resistance of asphalt mixtures is significantly affected by type of aggregate and air void content. Experimental results also confirmed the significance of binder grade and modifier type with relation to cracking resistance of asphalt mixtures. Analysis of result also indicated that both the loading rate and initial notch length had significant effect on the fracture energy at the highest test temperature, whereas the effect was strongly diluted at the two lower temperatures. No clear trend was found with the fracture peak load from either the effect of loading rate or notch length.

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Section: Introductionmentioning

confidence: 99%

Using Semi Circular Bending Test to Evaluate Low Temperature Fracture Resistance for Asphalt Concrete

Marasteanu

2009

Exp Mech

223

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“…introduced the force ductility test, followed by a high number of researchers that utilized this method to evaluate the tensile properties of asphalt [29][30][31]. The results [7,8,31,32] reported that the force extension test was a reliable and effective method.…”

Section: Force Ductility Test In 1976 Anderson and Wileymentioning

confidence: 99%

Laboratory Study on Properties of Diatomite and Basalt Fiber Compound Modified Asphalt Mastic

Cheng

Zhu

Tan

et al. 2017

Advances in Materials Science and Engineering

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In order to improve the performance of asphalt mastic, some researchers have added diatomite or basalt fiber as a modifier to the asphalt mastic, and the results show that some properties of the asphalt mastic were improved. For the simultaneous addition of diatomite and basalt fiber, two kinds of modifier, compound modified asphalt mastic had not been reported; in this paper, thirteen groups of diatomite and basalt fiber (DBFCMAM) compound modified asphalt mastic with different content were prepared to study the performance. Softening point, cone penetration, viscosity, and DSR tests were conducted, for the high temperature performance evaluation of DBFCMAM, whereas force ductility and BBR tests were used in the low temperature performance study of the DBFCMAM. The results demonstrated that the high temperature performance of DBFCMAM was increased; moreover, the low temperature performance of DBFCMAM improved by diatomite and basalt fiber according to the results of the force ductility test; however, the conclusion of the BBR test data was inconsistent with the force ductility test. In summary, the high temperature and low temperature properties of DBFCMAM had been improved.

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“…These are: (i) single-edge notched beam, SE(B), specimen [2,15,16]; (ii) disc-shaped compact tension, DC(T), specimen [17][18][19]; (iii) semi-circular bending, SCB, specimen [11,[20][21][22][23]; and (iv) double-edged notched tension, DENT, specimen [12]. Among the various options, SCB testing was selected in this study because it has several benefits compared to other fracture test methods.…”

Section: Scb Tests For Fracture Propertiesmentioning

confidence: 99%

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

Kim

Ban

2013

Journal of Testing and Evaluation

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Cracking in asphaltic pavement layers causes primary failure of the roadway structure, and the fracture resistance and characteristics of asphalt mixtures significantly influence the service life of asphaltic roadways. A better understanding of the fracture process is considered a necessary step to the proper development of design-analysis procedures for asphaltic mixtures and pavement structures. However, such effort involves many challenges because of the complex nature of asphaltic materials. In this study, experiments were conducted using uniaxial compressive specimens to characterize the linear viscoelastic properties and semi-circular bending (SCB) specimens to characterize fracture behavior of a typical dense-graded asphalt paving mixture subjected to various loading rates and at different temperatures. The SCB fracture test was also incorporated with a digital image correlation (DIC) system and finite-element model simulations including material viscoelasticity and cohesive-zone fracture to effectively capture local fracture processes and resulting fracture properties. The test results and model simulations clearly demonstrate that: (1) the rate-and temperature-dependent fracture characteristics need to be identified at the local fracture process zone, and (2) the rate-and temperature-dependent fracture properties are necessary in the structural design of asphaltic pavements with which a wide range of strain rates and service temperatures is usually associated.

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Low-Temperature Fracture Testing of Asphalt Binders: Regular and Modified Systems

Cited by 96 publications

References 4 publications

Using Semi Circular Bending Test to Evaluate Low Temperature Fracture Resistance for Asphalt Concrete

Using Semi Circular Bending Test to Evaluate Low Temperature Fracture Resistance for Asphalt Concrete

Laboratory Study on Properties of Diatomite and Basalt Fiber Compound Modified Asphalt Mastic

Rate- and Temperature-Dependent Fracture Characteristics of Asphaltic Paving Mixtures

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