Effect of optimized short-term aging temperature on rheological properties of rubberized binders containing warm mix additives

2020 ◽  
Vol 261 ◽  
pp. 120019 ◽  
Author(s):  
Hemanth Kumar Veeraiah ◽  
Suresha Subbarao Nagabhushanarao
Keyword(s):  
Rheological Properties ◽  
Aging Temperature ◽  
Short Term ◽  
Warm Mix Additives

scholarly journals Effects of WMA Additive on the Rheological Properties of Asphalt Binder and High Temperature Performance Grade

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Jiupeng Zhang ◽  
Guoqiang Liu ◽  
Li Xu ◽  
Jianzhong Pei
Keyword(s):  
Critical Temperature ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Aging Effect ◽  
Asphalt Binders ◽  
Short Term ◽  
Performance Grade ◽  
Temperature Performance ◽  
Effects Of Temperature ◽  
Increasing Temperature

Sasobit additives with different dosages were added into 70# and 90# virgin asphalt binders to prepare WMA binders. The rheological properties, includingG∗andδ, were measured by using DSR at the temperature ranging from 46°C to 70°C, and the effects of temperature, additive dosage and aging onG∗/sin⁡δ, critical temperature, and H-T PG were investigated. The results indicate that WMA additive improvesG∗but reducesδ, and the improvement on 70# virgin binder is more significant.G∗/sin⁡δexponentially decreases with the increasing temperature but linearly increases with the increasing additive dosage. Aging effect weakens the interaction between binder and additive but significantly increases the binder’s viscosity; that is whyG∗/sin⁡δis higher after short-term aging. In addition, the critical temperature increases with the increasing additive dosage, and the additive dosage should be more than 3% and 5% to improve H-T PG by one grade for 70# and 90# virgin binder, respectively.

Effects of Aging on the Physical and Rheological Properties of Asphalt Binder Incorporating Rediset®

2014 ◽  
Vol 70 (7) ◽  
Author(s):  
Mohamad Yusri Aman ◽  
Zulkurnain Shahadan ◽  
Munzilah Md. Ruhani ◽  
Rosnawati Buhari
Keyword(s):  
Statistical Analysis ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Dynamic Shear ◽  
Short Term ◽  
Rotational Viscometer ◽  
Aging Index ◽  
Modified Binders ◽  
Before And After ◽  
Effects Of Aging

This paper focuses on physical and rheological properties of virgin asphalt binder blended with different percentage of Rediset® content. The rheological properties of the Rediset® modified binders were characterized before and after being subjected to short-term aging using rotational viscometer (RV) and dynamic shear rheometer (DSR) according to SuperpaveTM test protocols. The results indicated that the penetration and softening point were consistently decreased and increased, respectively for unaged and short-term aged samples. The penetration index (PI) and viscosity aging index (VAI) were increased as the Rediset® modified binders aged and showed a high significance correlation. The addition of Rediset® in asphalt binder exhibited change in binder rheology after subjected to short-term aged which influenced the rutting parameter. A statistical analysis showed that Rediset® used as warm asphalt additive had significantly increased the G*/Sin δ parameter which indicated greater resistance to rutting.

Analysis of rheological properties and aging mechanism of bitumen after short-term and long-term aging

2020 ◽  
pp. 121777
Author(s):  
Wei Jiang ◽  
Rui Bao ◽  
Hao Lu ◽  
Dongdong Yuan ◽  
Rong Lu ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Short Term ◽  
Aging Mechanism

Effect of Defatting or Protein-removing Treatment of Wheat Flour on its Pasting, Thermal and Rheological Properties

2018 ◽  
Vol 17 (1) ◽  
pp. 99-104
Author(s):  
Wang Yu-Sheng ◽  
Chen Hai-Hua
Keyword(s):  
Physicochemical Properties ◽  
Rheological Properties ◽  
Storage Modulus ◽  
Wheat Flour ◽  
Loss Tangent ◽  
Short Term ◽  
Flour Protein

The present study focused on the physicochemical properties of wheat flour after defatting or protein-removing treatment. The results showed that the defatting or protein-removal increased the gelatinization enthalpy, retrogradation ratio, and gel hardness of wheat flour. The defatting treatment decreased the setback value, while the protein-removal treatment increased the setback value. The above results also suggested that the protein-removing treatment could promote both short-term and long-term retrogradation of wheat flour. Protein-removing treatment decreased the storage modulus and increased the loss tangent of wheat flour, suggesting that the protein-removing treatment could inhibit the wheat flour to form elastic gel.

scholarly journals Impact of asphalt aging temperature on chemo-mechanics

RSC Advances ◽  
2019 ◽  
Vol 9 (21) ◽  
pp. 11602-11613 ◽  
Author(s):  
Poulikakos L. D. ◽  
Cannone Falchetto A. ◽  
Wang D. ◽  
Porot L. ◽  
Hofko B.
Keyword(s):  
Aging Temperature ◽  
Crossover Temperature ◽  
Short Term ◽  
Chemical Aging ◽  
Aging Index ◽  
Bituminous Binders

A link between the chemistry and rheology of bituminous binders with a focus on short-term aging temperature is proposed. This link is made using a rheological aging index (RAI), the crossover temperature and a chemical aging index (CAI).

scholarly journals Effects of Surfactant Warm-Mix Additives on the Rheological Properties of High-Viscosity Asphalt

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Jingtao Shi ◽  
Weiyu Fan ◽  
Yi Lin ◽  
Pinhui Zhao ◽  
Jian Ouyang
Keyword(s):  
Low Temperature ◽  
Rheological Properties ◽  
Asphalt Mixture ◽  
High Viscosity ◽  
Temperature Performance ◽  
Maximum Value ◽  
Best Value ◽  
Warm Mix Additives ◽  
Failure Temperature ◽  
Economic Improvement

In order to evaluate the possibility of the application of warm mixing technology in high-viscosity asphalt mixture, in this paper, the effects of surfactant warm-mix additives (WMAs) on physical and rheological properties of high-viscosity asphalt (HVA) which was prepared with self-developed SBS/C9 petroleum resin blends (SPR) modifier were measured. The results indicate that the addition of WMA can decrease the viscosity and softening point but improve the penetration and ductility of warm-mix HVA. With the increase of the content of WMA, the modulus, failure temperature, viscosity, and recovery rate of warm-mix HVA all increased at first and then decreased, and the maximum value appeared when the modifier content was 1.0%–1.5%. Moreover, when the amount of WMA is 1.5%, the low-temperature performance of warm-mix HVA reaches the best value. Thus, the amount of WMA is of great importance for the warm-mix HVA, and in order to achieve ideal rheological properties, the recommended amount of WMA is 1.0%–1.5%. Considering economic improvement and environmental protection, WMA could be an alternative for increasing the workability of HVA.

scholarly journals Effects of Aging on the Physical and Rheological Properties of Trinidad Lake Asphalt Modified Bitumen

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2532
Author(s):  
Krzysztof Kołodziej ◽  
Lesław Bichajło ◽  
Tomasz Siwowski
Keyword(s):  
Rheological Properties ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Model Fitting ◽  
High Viscosity ◽  
Short Term ◽  
Modified Bitumen ◽  
Zero Shear Viscosity ◽  
Cross Model ◽  
Modified Binders

The application of various modifiers has emerged in recent years to improve conventional petroleum-based bitumen properties. The natural asphalt called Trinidad Lake Asphalt (TLA) has been applied very often due to its consistent properties, high viscosity and density, and superior rheological properties, and effective blending with other bitumen. However, most studies on TLA-modified binders always focused on physical and rheological properties in the original (unaged) condition, but the details about aging properties are often neglected. This study aimed to investigate the effect of short-term aging on the physical and rheological characteristics of the 35/50 base bitumen modified by the addition of two different TLA contents. The conventional physical tests and dynamic shear rheological tests were undertaken before and after aging to measure the penetration and softening point, complex shear modulus, and phase angle of the modified binders, as well as to calculate the zero shear viscosity using the Cross model fitting procedure. Based on the results of the above-mentioned comprehensive testing, the effect of aging on TLA-modified binder properties was evaluated using aging indices, as well as a direct comparison of results. The tests revealed that the short-term aging of TLA-modified binders did not worsen or reduce the pavement resistance to permanent deformation or the load-bearing capacity of the asphalt mixture.

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