Evaluation of asphalt–aggregate interaction based on the rheological properties

Zhang, Jiupeng; Fan, Zepeng; Hu, Dongliang; Hu, Zhuang; Pei, Jianzhong; Kong, Weichuan

doi:10.1080/10298436.2016.1199868

Cited by 43 publications

(15 citation statements)

References 20 publications

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“…Undrained − Drained Base (1) IE = Drained − Base Base (2) The swelling of CR could enhance both PE and IE, since it has the light absorbance component of asphalt, one of the main parts of forming IE, and increases the volume of CR particles, which has a positive impact on PE [9,14]. Additionally, the reduced light components in the base asphalt caused by absorption and the increased volume of CR particles make the movement of CR particles difficult, both of which would increase the viscosity of binders, leading to an increase of thickness of the film coating the aggregates, which in turn, has a positive impact on the anti-fatigue and anti-ageing properties of AR pavement [11,[16][17][18][19][20][21]. Additionally, the swelling rate is also decided by the nature of the CR and the asphalt chemical component [2,14,22].…”

Section: Pe =mentioning

confidence: 99%

Study on the Effect of Microwave Processing on Asphalt-Rubber

Liu

Pei

et al. 2020

Materials

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The addition of crumb rubber (CR) into base asphalt plays a critical role in the improvement of the performance of Asphalt-Rubber (AR) binders. However, due to the problems, like high constructing temperature and energy consumption brought by the additional rubber, the use of AR binders could be limited in some areas. During this study, CR is processed by microwave is adopted to reduce the viscosity of the AR binders system, while the CR processed by long screw extrusion also is studied. First, the swelling (the absorption of light component into the CR particle) and dissolution (some molecules of CR dissolving into the base asphalt), both of which determine the improved performance of AR binders, are investigated by fluorescence microscopy and extraction tests. The size of the CR particle after swelling observed by fluorescence microscopy is used to evaluate the swelling rate of CR samples, and the ratio of the weight loss of CR samples after extraction to the original weight is employed to measure the dissolution rate. Then, Brookfield rotational viscometer and storage stability tests are conducted. Last, the rheologic performance, including high and low-temperature performances, is characterized by the dynamic shear rheometer (DSR) and bending beam rheometer (BBR), respectively. The fluorescence microscopy and extraction results show that microwave processing could effectively increase the swelling and dissolving rate, with the figures rising twofold and more than threefold, respectively. The results show that microwave processing could effectively reduce the viscosity of AR binders, with a viscosity decrease of 65% at 190 °C and, at the same time, the high temperature of Performance Grade (PG) decrease from 88 °C to 76 °C. The storage stability could be negatively impacted, but it is slight and the low-temperature performance is improved slightly.

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Section: Pe =mentioning

confidence: 99%

Study on the Effect of Microwave Processing on Asphalt-Rubber

Liu

Pei

et al. 2020

Materials

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“…Cold recycled mixture of emulsified asphalt has become one of the most popular approaches for asphalt pavement maintenance, rehabilitation, and reinforcement, with the advantage of excellent pavement performance, resource conservation, and environmental friendliness [1][2][3][4]. Studies have found that the asphalt emulsion has a substantial influence on the rheological characteristics and the mechanical properties of the cold recycled mixture [5,6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effects of Evaporation Methods on the High‐Temperature Rheological and Fatigue Performances of Emulsified Asphalt Residues

Sun

Yue

Wang

et al. 2020

Advances in Materials Science and Engineering

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Cold recycling technology is a widely applied asphalt pavement rehabilitation technology. e properties of emulsified asphalt residues after water evaporates play an important role in the performance of the asphalt pavement. is paper investigates the rheological and fatigue properties of emulsified asphalt residues under different evaporation methods. Two different matrix asphalt binders and emulsifiers were selected to prepare the emulsified asphalt. Moreover, the direct heating method (DHM) and the EN13074 and ASTM D7497-09 evaporation methods were used to obtain emulsified asphalt residues. Furthermore, the linear viscoelasticity, the permanent deformation resistance, and the fatigue resistance were evaluated by the temperature sweep and frequency sweep tests, the multiple stress creep recovery (MSCR) test, and the linear amplitude sweep (LAS) test, respectively. e test results show that under the three evaporation conditions, the growth amplitude order of the rutting factor, recovery percent, complex modulus, and fatigue life of emulsified asphalt residues is ASTM D7497-09 > EN13074 > DHM, and as is the attenuation amplitude order of the nonrecoverable creep compliance and phase angle. e results reveal that the evaporation process leads to oxidation and hardening of the residues. e hardening degree of the ASTM D7497-09 evaporation method is higher than that of the EN13074 evaporation method, and the hardening degree of the EN13074 evaporation method is higher than that of the direct heating method. e rheological and fatigue performances of the emulsified asphalt residues depend on the matrix asphalt. Moreover, the residue that was prepared from 70# asphalt has good high-temperature and fatigue properties, but it has higher temperature sensitivity and stress sensitivity.

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“…Liu reported that the evaluation index based on phase angle was more sensitive than that based on complex modulus. Temperature and specific surface area were the two main factors effecting the interfacial interaction between asphalt binders and mineral fillers [14,45,46,47].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Interaction Analysis of Asphalt Binder, Mastic and Mortar

et al. 2019

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This paper investigated the rheological properties of asphalt binder, asphalt mastic and asphalt mortar and the interaction between asphalt binder, mineral filler and fine aggregates. Asphalt binder, mastic and mortar can be regarded as the binding phase at different scales in asphalt concrete. Asphalt mastic is a blend of asphalt binder and mineral filler smaller than 0.075 mm while asphalt mortar consists of asphalt binder, mineral filler and fine aggregate smaller than 2.36 mm. The material compositions of mastic and mortar were determined from the commonly used asphalt mixtures. Dynamic shear rheometer was used to conduct rheological analysis on asphalt binder, mastic and mortar. The obtained test data on complex modulus and phase angle were used for the construction of rheological master curves and the investigation of asphalt-filler/aggregate interaction. Test results indicated a modulus increase of three- to five-fold with the addition of filler and a further increase of one to two orders of magnitude with cumulative addition of fine aggregates into asphalt binder. Fine aggregates resulted in a phase change for mortar at high temperatures and low frequencies. The filler had stronger physical interaction than fine aggregate with an interaction parameter of 1.8–2.8 and 1.15–1.35 respectively. Specific area could enhance asphalt-filler interaction. The mastic and mortar modulus can be well predicted based on asphalt binder modulus by using particle filling effect. Asphalt mortar had a significant modulus reinforcement and phase change and thus could be the closest subscale in terms of performance to that of asphalt mixtures. It could be a vital scale that bridges the gap between asphalt binder and asphalt mixtures in multiscale performance analysis.

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Evaluation of asphalt–aggregate interaction based on the rheological properties

Cited by 43 publications

References 20 publications

Study on the Effect of Microwave Processing on Asphalt-Rubber

Study on the Effect of Microwave Processing on Asphalt-Rubber

Investigation of the Effects of Evaporation Methods on the High‐Temperature Rheological and Fatigue Performances of Emulsified Asphalt Residues

Rheological and Interaction Analysis of Asphalt Binder, Mastic and Mortar

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