Laboratory Evaluation on Performance of Compound-Modified Asphalt for Rock Asphalt/Styrene–Butadiene Rubber (SBR) and Rock Asphalt/Nano-CaCO3

Lv, Songtao; Wang, Shuangshuang; Guo, Tong; Xia, Chengdong; Li, Jianglong; Gui, Hou

doi:10.3390/app8061009

Cited by 28 publications

(15 citation statements)

References 26 publications

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“…The Dynamic Shear Rheometer (DSR) test can be conducted to determine the rheological behavior of asphalt binders in varying temperature and frequency conditions [40,41]…”

Section: Dynamic Shear Rheometer (Dsr) Testmentioning

confidence: 99%

Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes

et al. 2018

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To improve the performance of petroleum asphalt, bio-char was used as a modifier for a petroleum asphalt binder, in this study. The rheological properties of bio-char modified asphalt binders were compared with different particle sizes and contents, with one control and one flake graphite modified asphalt binder. Specifically, the bio-char modifiers with two particle sizes (ranging from 75 μm–150 μm and less than 75 μm) and three contents of 2%, 4%, and 8% were added into the asphalt binder. A flake graphite powder with particle sizes less than 75 μm was used as a comparison modifier. The Scanning Electron Microscopy (SEM) image showed the porous structure and rough surface of bio-char as well as dense structure and smooth surface of flake graphite. A Rotational Viscosity (RV) test, Dynamic Shear Rheometer (DSR) test, aging test, and Bending Beam Rheometer (BBR) test were performed to evaluate the properties of bio-char modified asphalt in this study. Both modifiers could improve the rotational viscosities of the asphalt binders. The porous structure and rough surface of bio-char lead to larger adhesion interaction in asphalt binder than the smooth flake graphite. As a result, the bio-char modified asphalts had better high-temperature rutting resistance and anti-aging properties than the graphite modified asphalt, especially for the binders with the smaller-sized and higher content of bio-char particles. Furthermore, the asphalt binder modified by the bio-char with sizes less than 75 μm and about 4% content could also achieve a better low-temperature crack resistance, in comparison to other modified asphalt binders. Thus, this type of bio-char particles is recommended as a favorable modifier for asphalt binder.

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“…The Dynamic Shear Rheometer (DSR) test can be conducted to determine the rheological behavior of asphalt binders in varying temperature and frequency conditions [40,41]…”

Section: Dynamic Shear Rheometer (Dsr) Testmentioning

confidence: 99%

Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes

et al. 2018

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“…The thermal cracking performance of 5% BRA/SBR-modified asphalt has been effectively improved, and that of nano-CaCO 3 was not obvious. Compound-modified asphalt mixtures have higher temperature stability, low-temperature cracking resistance, moisture susceptibility, and durability than 5% SBS modified asphalt [24][25][26].…”

Section: Introductionmentioning

confidence: 98%

Rheological Characteristics Evaluation of Bitumen Composites Containing Rock Asphalt and Diatomite

Huang

Wang

He³

et al. 2019

Applied Sciences

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Previous studies have showed that rock asphalt (RA) or diatomite were used to modify the petroleum bitumen. This paper presents the findings from a study conducted to evaluate the potential impact of RA and diatomite on the rheological characteristics of bitumen composites. RA and diatomite with three different dosages were added into the petroleum bitumen: 18% RA, 13% RA+7% diatomite, and 16% RA+9% diatomite by weight. The rheological characteristics of the RA and diatomite modified bitumens were evaluated in this study. The tests conducted included temperature sweep and frequency sweep tests with a dynamic shear rheometer (DSR), a Brookfield rotation viscosity test, and a scanning electron microscope test. The research showed that the addition of RA and diatomite to petroleum bitumen considerably increased the apparent viscosity, dynamic shear modulus, and rutting resistance in bitumen specimens. However, the DSR test indicated a slight reduction in the fatigue performance of composites made of RA and diatomite modified bitumens. Overall, RA and diatomite are good modifiers for petroleum bitumen for a performance improvement.

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“…Munzenberger et al obtained stress relaxation modulus from dynamic analysis by taking a nonlinear strain dependency of the viscoelastic properties into consideration and found that the Generalized Maxwell model could give results close to experimental data. The viscoelastic approach has also used in rubber‐blended building materials for creep evaluation with different constant temperatures . Yin et al performed time‐dependent tests on rubber specimens at room temperature and fit the test data using a number of viscoelastic models with conclusions that all the models were quantitatively equivalent.…”

Section: Introductionmentioning

confidence: 99%

A general hyperelastic‐time model for numerical prediction on rubber relaxation and experimental validation under different environments

Luo

2019

Polymer Engineering & Sci

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All the methods developed for rubber creep and relaxation are validated to specific environments for now. In general, for each new loading case and new component, a data fitting procedure has to be performed to obtain different suitable parameters. This limitation has restricted developments of the theories and their applications. This article investigates a possibility to predict the time-dependent response from data of known conditions using the time-dependent hyperelastic approach. A number of hypotheses are proposed for considered conditions, i.e., loading, material hardness, and different components, and are validated with experimental data using a dumbbell specimen and a typical industrial anti-vibration product. It has been proved that the concept of effective strain is a good criterion to bridge two different rubber components for time-dependent predictions. Hence, the application restriction of the hyperelastic-time model is successfully lifted. For the first time, it is possible to predict, not to simulate only, rubber creep/relaxation based on known parameters. By combination with previous work on temperature effect, a general hyperelastic-time model with multiple capabilities can be established and used to predict time-dependent response of rubber components. It is desirable to apply this approach on more engineering cases for further verification. POLYM. ENG.

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Laboratory Evaluation on Performance of Compound-Modified Asphalt for Rock Asphalt/Styrene–Butadiene Rubber (SBR) and Rock Asphalt/Nano-CaCO3

Cited by 28 publications

References 26 publications

Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes

Rheological Performance of Bio-Char Modified Asphalt with Different Particle Sizes

Rheological Characteristics Evaluation of Bitumen Composites Containing Rock Asphalt and Diatomite

A general hyperelastic‐time model for numerical prediction on rubber relaxation and experimental validation under different environments

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