Effect of 3D roughness characteristics on bonding behaviors between concrete substrate and asphalt overlay

Tang, Zhongping; Huang, Fanglin; Peng, Hua

doi:10.1016/j.conbuildmat.2020.121386

Cited by 15 publications

(7 citation statements)

References 36 publications

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“…e sample preparation is shown in Figure 3. To evaluate the effect of interface roughness on the fracture behaviors, surface treatments were conducted on the concrete substrates, and the procedure was the same as [23]. Two different interfaces (milled and unmilled interfaces) considering the surface roughness were prepared.…”

Section: Ree-point Bending (Tpb) Testmentioning

confidence: 99%

“…e roughness values of the two types specimens were 0.18 and 0.64 mm. e roughness test was conducted following the strategy in [23]. A 3D laser was used to get the three-dimensional coordinates of a surface.…”

Section: Ree-point Bending (Tpb) Testmentioning

confidence: 99%

“…Tang et al [23] conducted some direct shear tests and found a larger surface roughness contributed to a superior shear performance at all temperatures. e results derived from direct shear tests were slightly different with this study.…”

Section: Analysis Of Fracture Parametersmentioning

confidence: 99%

“…Meanwhile, interface roughness also affects the optimum tack coat application rate. On the other hand, the friction angle and internal cohesion, generated from the Mohr-Coulomb failure criterion, are also influenced by the interface roughness parameters [22,23]. Ktari et al [24] found that there existed an intermediate transition zone (ITZ) in the direct tension tests between two asphalt layers, and there was a certain correlation between the surface roughness and ITZ thickness.…”

Section: Introductionmentioning

confidence: 99%

“…Texture depth, surface roughness, and fractal dimension, etc. are generally employed to quantificationally present the effects on the bonding performance between layers [23,25,26].…”

Section: Introductionmentioning

confidence: 99%

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Mode I Fracture Behaviors between Cement Concrete and Asphalt Concrete Layer

Tang

Huang

Peng

2021

Advances in Civil Engineering

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Asphalt overlay or concrete overlay on existing pavements is a common strategy for pavement maintenance. Interlayer bonding performance between asphalt and concrete layers is a critical concern in achieving optimal long-term structural performance due to the possible cracking along the interface. In this study, bonding behaviors of asphalt concrete interface were characterized by employing mode I fracture tests conducted at −10 and 25°C, respectively. Two typical interface conditions were manually prepared. A tack coat material was applied on the interface with four distinct rates: 0.1, 0.2, 0.3, and 0.4 L/m2. Parameters including fracture strength, stress intensity factor (KIC), facture energy (GF), and energy release rate (J integral) were selected to evaluate the fracture performance. Results showed that optimum tack coat rates were 0.1 and 0.3 L/m2 for specimens with unmilled and milled surfaces. At the optimum tack coat rates, KIC and GF increased with the increase of interface roughness at −10°C, while, at 25°C, J integral of specimens with unmilled interface was larger than that of specimens with milled interface at the optimum tack coat rates. Analysis of variance (ANOVA) was conducted to evaluate the significance of the factors on the fracture loads and found that surface roughness is significant at −10°C and becomes nonsignificant at 25°C. Temperature and tack coat rate were significant factors considering a given interface.

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Section: Ree-point Bending (Tpb) Testmentioning

confidence: 99%

Section: Ree-point Bending (Tpb) Testmentioning

confidence: 99%

Section: Analysis Of Fracture Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Texture depth, surface roughness, and fractal dimension, etc. are generally employed to quantificationally present the effects on the bonding performance between layers [23,25,26].…”

Section: Introductionmentioning

confidence: 99%

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