Comparative Study on the Bond Strength between Direct Tensile Test and Indirect Tensile Test for Bonded Concrete Overlay

Kim, Young Kyu; Lee, Seung Woo

doi:10.12652/ksce.2013.33.3.1153

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…The main factors determining its fatigue properties are the cohesion of the asphalt mortar (the adhesion of the aggregate with the asphalt and its internal friction based on the aggregate gradation). The effect of intrusion between aggregates is relatively weak [30]. During the indirect tensile tests, the transverse tensile fatigue properties mainly depend on the adhesion (between asphalt mortar and aggregates) and the internal frictional resistance.…”

Section: Analysis Of the Fitting Results Of Fatigue Tests Under Diffementioning

confidence: 99%

Characteristics of Moduli Decay for the Asphalt Mixture under Different Loading Conditions

Fan

Xia

et al. 2018

Applied Sciences

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In order to explore the moduli decay patterns of asphalt mixtures under different loading conditions, the nonlinear fatigue damage model was implemented in order to simulate the moduli decay patterns. Then, the direct tensile, indirect tensile, and uniaxial compression fatigue tests were employed under four kinds of stress levels with four parallel tests. The specimens of AC-13C Styrene-butadiene-styrene (SBS) modified mixtures were manufactured. Based on the test results, the decay patterns of the moduli during fatigue tests under different stress states were revealed, and the parameters of the damage model under different test conditions were obtained. By changing the values of the model parameters under a certain loading condition, fatigue curves were obtained. Then, the fatigue properties of asphalt mixtures under different stress states could be compared and analyzed directly. The result indicated that the evolution curves of fatigue damage for the direct tensile test, the indirect tensile test, and the uniaxial compression test all experienced three stages, which indicates that the fatigue damage characteristic of asphalt mixtures is non-linear. The decay patterns of the direct tensile moduli and the tensile moduli measured by the indirect tensile test are similar. The decay patterns of the uniaxial compression and the compression moduli measured by indirect tensile test are similar. The decay patterns of tensile and compressive moduli are obviously different. At the same cycle ratio state, the position of the decay curve for the compression moduli is higher than that of the tensile moduli. It indicates that the tensile failure is the main reason of the fatigue damage for asphalt mixture. The new analysis method of fatigue damage was proposed, which provides a possibility to compare the fatigue results that were obtained from different loading conditions and different specimen sizes. traffic and environmental conditions have been conducted [12,13]. In order to ensure the durability and usability of asphalt pavement, many researchers have been conducting the works of evaluation of fatigue characteristics via varied fatigue test methods in different specimen's size and different stress levels.Xie Jun suggested that the direct tension strength got larger at higher strain loading rate [14]. Hyung Suk Lee conducted an indirect tensile test and determined the fundamental viscoelastic material property, which means that the strength of asphalt mixture were related to the temperature and loading time [15]. Waleed A. Zeiada employed the uniaxial compression test and observed that the fatigue endurance limit value increases by the increasing of temperature, asphalt content, and rest periods, whereas it decreased when the volume of air voids increases [16]. Different test methods produce different results. So far, three traditional test methods have been employed extensively: the direct tensile test, the indirect tensile test, and the uniaxial compression test. The direct tensile test refers to the test of a material ...

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Section: Analysis Of the Fitting Results Of Fatigue Tests Under Diffementioning

confidence: 99%

Characteristics of Moduli Decay for the Asphalt Mixture under Different Loading Conditions

Fan

Xia

et al. 2018

Applied Sciences

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Field study on understanding effects of micro-trenching on structural performance of asphaltic pavement

Singh

Rajan

2019

Int. J. Pavement Res. Technol.

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Bond-Fatigue Behavior of Bonded Concrete Overlay

Kim

Lee

2016

Journal of Testing and Evaluation

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Bonded concrete overlays have a structural advantage over unbonded concrete overlays when the overlay and the existing pavement layer behave as a monolithic layer. Therefore, it is important to ensure suitable bond strength between the two layers. Many studies have specified the bond-strength criteria for the construction of bonded concrete overlays based on a monotonic load as pull off test. However, cyclic stress at the interface of bonded concrete overlay layer occurs by the repetition of traffic loading and environmental loading caused by daily temperature changes. In this study, a strategic test procedure is developed to investigate potential bond failures caused by cyclic loading, and a bond-fatigue equation for a bonded concrete overlay was suggested. The test results indicate that early distress in bonded concrete overlay may arise because of a bond failure if the bond stress at the interface exceeds 90 % of the bond strength.

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Comparative Study on the Bond Strength between Direct Tensile Test and Indirect Tensile Test for Bonded Concrete Overlay

Cited by 4 publications

References 5 publications

Characteristics of Moduli Decay for the Asphalt Mixture under Different Loading Conditions

Characteristics of Moduli Decay for the Asphalt Mixture under Different Loading Conditions

Field study on understanding effects of micro-trenching on structural performance of asphaltic pavement

Bond-Fatigue Behavior of Bonded Concrete Overlay

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