Bitumen–stone adhesive zone damage model for the meso-mechanical mixture design of ravelling resistant porous asphalt concrete

Mo, Liantong; Huurman, M.; Wu, Shao Peng; Molenaar, A A A

doi:10.1016/j.ijfatigue.2011.06.003

Cited by 56 publications

(20 citation statements)

References 12 publications

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“…The idealized adhesive zone represented by two stone columns glued by a thin bitumen interlayer was appropriate to well explain the mechanical behavior of the interfacial adhesion, the transition phase from adhesion to cohesion and the completely cohesive failure. The research reveals that the bitumen film shows a peak strength value at 15-25 microns and thicker film will result in cohesive failure of bulk bitumen [17]. This may be due to the asphalt film thicknesses of two groups of analyzed specimens that were almost the same or possible with similar and random microstructures.…”

Section: Effect Of Asphalt Film Thicknessmentioning

confidence: 94%

“…Research efforts have been made to investigate the influence of interfacial bonding conditions on the mechanical properties of asphalt mixture. Interfacial bonding in the adhesive zone due to stone surface morphology and asphalt film thickness often have a significant influence on the failure mechanism [16][17][18]. Therefore, more comprehensive and accurate knowledge of the interface is necessary to better understand the asphalt-aggregate systems, and some significant work, such as shearing fracture mechanism, needs to be done.…”

Section: Introductionmentioning

confidence: 99%

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Failure mechanism analysis of asphalt–aggregate systems subjected to direct shear loading

et al. 2017

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In order to investigate the mechanical behavior of asphalt-aggregate systems subjected to direct shear loading and reveal the shear failure mechanism, four groups of direct shear tests were conducted on composite specimens under different experimental conditions with a self-manufactured direct shear test apparatus at 25°C. Comparative studies were conducted to evaluate the effects of stone surface treatment, asphalt film thickness and loading rate on the shear mechanical behavior of asphaltaggregate specimens. Results showed that two kinds of the complete stress-displacement curves, including the general single-peak curve and the first-known double-peak curve, were clearly observed for each condition. In addition, the internal failure mechanisms were analyzed based on qualitative and quantitative methods. It can be concluded that the potential failure modes of the direct shear test include adhesive failure at the asphalt-aggregate interface and cohesive failure within the asphalt film. The research results enhance understanding of the shear mechanical behavior and failure mechanism of asphalt mixture, and also provide a reference for the interfacial failure.

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Section: Effect Of Asphalt Film Thicknessmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Failure mechanism analysis of asphalt–aggregate systems subjected to direct shear loading

et al. 2017

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“…Cracking is essentially manifested by the following two types of failure: one is bitumen mastic adhesion failure, in which the bitumen mastic is stripped from the surface of large aggregates; the other is cohesive failure, in which the bitumen mastic cracks by itself under tensile or shear load. Two kinds of failure mode are common during the onset of low-temperature damage in mixtures [ 23 , 24 , 25 ]. From the perspective of interface failure of mixtures, two kinds of strength index exist in bitumen mastics, namely, adhesive strength and cohesive strength.…”

Section: Methodsmentioning

confidence: 99%

Effects of Filler–Bitumen Ratio and Mineral Filler Characteristics on the Low-Temperature Performance of Bitumen Mastics

Zheng

Zou

et al. 2018

Materials

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This study analyzed the effects of the filler–bitumen interaction of the content and the meso powder characteristics of the mineral filler on the low-temperature performance of bitumen mastics. Control strategies for the mineral filler content (filler–bitumen ratio (RFB)) were also determined. Panjin #90 bitumen and styrene–butadiene–styrene polymer-modified bitumen were used in the experiment. Four kinds of limestone powder were used, all of which satisfy the Chinese standard for powder particle size but exhibit different meso characteristics. Each kind of limestone powder was used to prepare bitumen mastic samples under five different RFBs. The meso voids in the unit mass (Vg) of the four kinds of mineral filler were tested on the basis of the principle of the Rigden void ratio. The fixed bitumen–free bitumen ratio in the bitumen mastic samples was determined using Vg, bitumen density, and RFB. The low-temperature cohesive strength of the bitumen mastics was used as the control index for critical failure, whereas variation rates of bending creep stiffness at low temperature were used as the control index for fatigue failure. Results showed that the effects of the filler–bitumen interaction of the content and the meso characteristics of the mineral filler are significant and such effects are determined by the fixed bitumen–free bitumen ratio. The optimal fixed bitumen–free bitumen ratio in the bitumen mastics under two low-temperature conditions (−30 °C and −10 °C) can be determined on the basis of the influence of the fixed bitumen–free bitumen ratio on the critical and the failure control indices. Moreover, RFB can be obtained through reverse calculation. The mineral filler content can therefore be precisely controlled, which is crucial for the rational use of mineral filler and for the improvement of the pavement performance of bitumen mastics at low temperatures.

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“…the interface adhesion plus interfacial transition zone. Mo et al (2011) and Mo (2010). Kringos N. (2007) developed a computational tool for the fundamental analysis of combined mechanical and moisture induced damage of asphaltic mixes, which includes both physical and mechanical moisture damage inducting processes.…”

Section: Adhesion Test Methodsmentioning

confidence: 99%

Development of a new aggregate-binder adhesion test method

Al-Haddad¹,

Al-Khalid²

2015

Bituminous Mixtures and Pavements VI

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Adhesion in asphalt mixtures can be defined as energy required to fracture the adhesive bond between binder and aggregate causing isolation from each other. The main objective of this study was to develop a simple, practical and reliable laboratory adhesion test method enabling direct measurement of the adhesive bond strength of binder-aggregate systems. The adhesion results were subjected to comparative analysis to determine the effect of various variables and parameters. Four binders: two conventional and the other two are their polymer modified varieties, and two types of aggregate, were used to arrive at standardised testing conditions. When the binder thickness increased, the failure transitioned from adhesive to cohesive accompanied by a decrease in the maximum tensile load at failure. Practical work of adhesion decreased with increased testing temperature but the largest decrease was due to moisture conditioning, which increased with increase in loading rate.

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Bitumen–stone adhesive zone damage model for the meso-mechanical mixture design of ravelling resistant porous asphalt concrete

Cited by 56 publications

References 12 publications

Failure mechanism analysis of asphalt–aggregate systems subjected to direct shear loading

Failure mechanism analysis of asphalt–aggregate systems subjected to direct shear loading

Effects of Filler–Bitumen Ratio and Mineral Filler Characteristics on the Low-Temperature Performance of Bitumen Mastics

Development of a new aggregate-binder adhesion test method

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