Investigation on the effect of physical hardening and aging temperature on low-temperature rheological properties of asphalt binder

2019 ◽  
pp. 1-23 ◽  
Author(s):  
Di Wang ◽  
Augusto Cannone Falchetto ◽  
Chiara Riccardi ◽  
Jan Westerhoff ◽  
Michael P. Wistuba
Keyword(s):  
Low Temperature ◽  
Rheological Properties ◽  
Aging Temperature ◽  
Asphalt Binder ◽  
Physical Hardening

scholarly journals Effect of Recycled Shell Waste as a Modifier on the High- and Low-Temperature Rheological Properties of Asphalt

2021 ◽  
Vol 13 (18) ◽  
pp. 10271
Author(s):  
Yuchen Guo ◽  
Xuancang Wang ◽  
Guanyu Ji ◽  
Yi Zhang ◽  
Hao Su ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Rheological Properties ◽  
Low Temperatures ◽  
High Speed ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Asphalt Binders ◽  
Modified Asphalt ◽  
Temperature Performance

The deteriorating ecological environment and the concept of sustainable development have highlighted the importance of waste reuse. This article investigates the performance changes resulting from the incorporation of shellac into asphalt binders. Seashell powder-modified asphalt was prepared with 5%, 10%, and 15% admixture using the high-speed shear method. The microstructure of the seashell powder was observed by scanning electron microscope test (SEM); the physical-phase analysis of the seashell powder was carried out using an X-ray diffraction (XRD) test; the surface characteristics and pore structure of shellac were analyzed by the specific surface area Brunauer-Emmett-Teller (BET) test; and Fourier infrared spectroscopy (FTIR) qualitatively analyzed the composition and changes of functional groups of seashell powder-modified asphalt. The conventional performance index of seashell powder asphalt was analyzed by penetration, softening point, and ductility (5 °C) tests; the effect of seashell powder on asphalt binder was studied using a dynamic shear rheometer (DSR) and bending beam rheometer (BBR) at high and low temperatures, respectively. The results indicate the following: seashell powder is a coarse, porous, and angular CaCO3 bio-material; seashell powder and the asphalt binder represent a stable physical mixture of modified properties; seashell powder improves the consistency, hardness, and high-temperature performance of the asphalt binder but weakens the low-temperature performance of it; seashell powder enhances the elasticity, recovery performance, and permanent deformation resistance of asphalt binders and improves high-temperature rheological properties; finally, seashell powder has a minimal effect on the crack resistance of asphalt binders at very low temperatures. In summary, the use of waste seashells for recycling as bio-modifiers for asphalt binders is a practical approach.

scholarly journals Evaluating the Rheological Properties of High-Modulus Asphalt Binders Modified with Rubber Polymer Composite Modifier

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7727
Author(s):  
Xiaorui Zhang ◽  
Chao Han ◽  
Jun Yang ◽  
Xinquan Xu ◽  
Fan Zhang
Keyword(s):  
Low Temperature ◽  
Rheological Properties ◽  
Polymer Composite ◽  
Complex Modulus ◽  
Asphalt Binder ◽  
Climatic Conditions ◽  
Morphological Properties ◽  
Asphalt Binders ◽  
High Modulus ◽  
Petroleum Asphalt

With the increasing traffic loading and changing climatic conditions, there is a need to use novel superior performing pavement materials such as high-modulus asphalt binders and asphalt mixtures to mitigate field distress such as rutting, cracking, etc. This laboratory study was thus conducted to explore and substantiate the usage of Rubber Polymer Composite Modifier (RPCM) for high-modulus asphalt binder modification. The base asphalt binder used in the study comprised A-70# Petroleum asphalt binder with RPCM dosages of 0.25%, 0.30%, 0.35%, 0.40% and 0.45%, separately. The laboratory tests conducted for characterizing the asphalt binder rheological and morphological properties included the dynamic mechanical analysis (DM), temperature-frequency sweep in the dynamic shear rheometer (DSR) device, bending beam rheometer (BBR), and florescence microscopic (FM) imaging. The corresponding test results exhibited satisfactory compatibility and potential for using RPCM as a high-modulus asphalt binder modifier to enhance the base asphalt binder’s rheological properties, both with respect to high- and low-temperature performance improvements. For the A-70# Petroleum asphalt binder that was evaluated, the optimum RPCM dosage was found to be 0.30–0.35%. In comparison to styrene–butadiene–styrene (SBS), asphalt binder modification with RPCM exhibited superior high-temperature rutting resistance properties (as measured in terms of the complex modulus and phase angle) and vice versa for the low-temperature cracking properties. Overall, the study beneficially contributes to the literature through provision of a reference datum toward the exploratory usage of RPCM for high-modulus asphalt binder modification and performance enhancements.

Evaluation of Carbon Nanotubes Asphalt Modification Using the Superpave Criteria

2021 ◽  
Vol 902 ◽  
pp. 135-143
Author(s):  
Mohammad Ali Khasawneh ◽  
Khalid Ghuzlan ◽  
Nada Bani Melhem
Keyword(s):  
Carbon Nanotubes ◽  
Low Temperature ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Fatigue Cracking ◽  
Asphalt Binders ◽  
Asphalt Pavements ◽  
Low Temperature Cracking ◽  
Asphalt Modification ◽  
Rotational Viscosity

Rutting, fatigue cracking and low temperature cracking are the most important distresses in asphalt pavements as a result of changes in rheological properties of asphalt binder. Many types of modifiers were used to enhance asphalt behavior at both low and high temperatures. In this study, carbon nanotubes (CNT) were used as one of many nanomaterials that take a large attention in the latest research related to asphalt modification against different types of distresses. Effect of CNT on rheological properties of asphalt binder was investigated by testing unmodified and CNT modified asphalt binders using two of Superpave devices: Dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR). Penetration, softening point, flash point and rotational viscosity (RV) tests were carried out as well. CNT was added in 0.1%, 0.5% and 1% by weight of asphalt binder. It was found that adding CNT in 0.5% and 1% increase stiffness of asphalt and consequently asphalt pavement rutting resistance. On the other hand, this increase in stiffness affected pavement behavior adversely which is not desirable for fatigue and low temperature cracking. However, Superpave specifications were still satisfied and asphalt binder’s relaxation properties were improved upon CNT modification. It was eventually found that 0.5% of CNT is the optimum percentage for the best performance.

Time-Temperature Superposition and Physical Hardening Effects in Low-Temperature Asphalt Binder Grading

2003 ◽  
Vol 1829 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Arindam Basu ◽  
Mihai O. Marasteanu ◽  
Simon A. M. Hesp
Keyword(s):  
Low Temperature ◽  
Superposition Principle ◽  
Asphalt Binder ◽  
Test Results ◽  
Physical Hardening ◽  
Equivalence Factor ◽  
Temperature Superposition ◽  
Current Specification ◽  
Time Temperature Superposition ◽  
Time Temperature Superposition Principle

During the development of the Strategic Highway Research Program low-temperature binder specifications, in an effort to propose practical laboratory tests that require less time to perform, the time–temperature superposition principle was used to show that the stiffness after 2 h of loading at the performance-graded (PG) low temperature can be approximated by the stiffness after 60 s of loading at 10°C above the PG low temperature. This equivalence principle was developed on the basis of test results from the eight core asphalts and is widely accepted today. However, actual 2-h tests were not performed to experimentally validate this equivalence. Furthermore, the effect of physical hardening on time–temperature superposition was not considered. The validity of the time–temperature equivalence factor used in the low-temperature specification criterion and the ways in which the deviations could affect the current specification are evaluated.

scholarly journals Research on Rheological Properties of High-Percentage Artificial RAP Binder with WMA Additives

2020 ◽  
Vol 2020 ◽  
pp. 1-24
Author(s):  
Weiying Wang ◽  
Songchang Huang ◽  
Yongchun Qin ◽  
Yiren Sun ◽  
Rui Dong ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Creep Recovery ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Temperature Performance ◽  
Huge Impact ◽  
Polyethylene Wax

With the development of pavement recycling technology, the requirement of reclaimed asphalt pavement (RAP) is substantially increasing. Warm-mix recycled asphalt (WMRA) technology has made great progress, which can effectively decrease the working temperature and improve the RAP content. In this study, the rheological properties of recycled binders with incorporation of high-percentage artificial RAP binder (30–70%) were evaluated using two types of warm-mix asphalt (WMA) additives, i.e., polyethylene wax R and surfactant M. The dynamic shear rheometer (DSR) and beam bending rheometer (BBR) tests were conducted on the recycled binders. The results showed that the temperature and frequency played an important role in determining the complex shear modulus of the high-percentage WMRA binders. The dependency of phase angle on frequency increased after the long-term aging. The WMA additive R had a relatively huge impact on the rheological properties of asphalt, which mainly occurred before the PAV aging of recycled asphalt binder; the WMA additive M had no significant impact on the rheological properties of recycled asphalt binder. The WMA additive R enhanced the low-temperature rheology of recycled asphalt binder, while the WMA additive M enhanced the high-temperature rheology of recycled asphalt binder. Both of these types of WMA additives improved the antifatigue performance of recycled asphalt binder. The increased content of RAP binder improved the high-temperature performance and reduced the low-temperature performance of the recycled asphalt binder. However, it had no obvious impact on the fatigue performance. In addition, there was a good linear relation between the RAP binder content and the two indexes of the multiple stress creep recovery (MSCR) test.

scholarly journals The Effects of Using Waste Engine Oil Bottom on Physical, Rheological Properties and Composite Modification Mechanism of SBS-Modified Asphalt

2022 ◽  
Vol 2022 ◽  
pp. 1-12
Author(s):  
Yanbo Wang ◽  
Ailian Liu ◽  
Weixiang Ding ◽  
Fangping Rao ◽  
Jun Yuan ◽  
...  
Keyword(s):  
Low Temperature ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Polymer Network ◽  
Engine Oil ◽  
Chemical Compositions ◽  
Modified Asphalt ◽  
Waste Engine Oil ◽  
Sbs Modified Asphalt ◽  
Composite Modification

This research explores the effects of using waste engine oil bottom on physical, rheological properties and composite modification mechanism of SBS-modified asphalt. The SBS asphalt binder was modified by WEOB with different concentrations (2, 4, and 6 wt%). The GC-MS and FTIR spectrometry were conducted to evaluate the chemical compositions of WEOB- and WEOB-modified asphalt. RV, DSR, and BBR were tested to evaluate high- and low-temperature pavement performance. Fluorescence microscope (FM) test, bar thin layer chromatograph (BTLC) test, and AFM test were performed to evaluate the micromorphologies and modification mechanism. The test results showed that a new characteristic peak appeared in the infrared spectrum of the WEOB-modified SBS asphalt, indicating a chemical reaction in the modification process. Incorporation of WEOB improves both the high-temperature and low-temperature properties of the SBS asphalt binder. It was confirmed that with the increase of WEOB concentration, the content of colloid gradually increases, which promotes the swelling and compaction of SBS polymer network structure. Furthermore, WEOB promotes the polarity of SBS and forms graft product MAH-g-SBS with asphalt, thus inhibiting the thermal movement of asphalt molecules. On the contrary, light components have a good correlation with the surface roughness of modified asphalt; the results show that the modified asphalt has good rutting resistance.

scholarly journals Effect of Biowaste on the High- and Low-Temperature Rheological Properties of Asphalt Binders

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Xuancang Wang ◽  
Yuchen Guo ◽  
Guanyu Ji ◽  
Yi Zhang ◽  
Jing Zhao ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Rheological Properties ◽  
Asphalt Binder ◽  
Oyster Shell ◽  
Asphalt Binders ◽  
Creep Recovery ◽  
Oyster Shell Powder ◽  
Shell Powder ◽  
Rheological Performance

The growth of aquaculture has increased the production of oysters. However, the increased oyster shell volume has created serious environmental and recycling problems for the society. In order to study the sustainable utilization of waste oyster shells, asphalt binder of waste oyster shell powder was prepared by using modified asphalt material with waste oyster shells. The microstructure of oyster shell powder was analyzed by scanning electron microscopy experiments. The chemical composition of the asphalt binder was observed by Fourier transform infrared spectroscopy tests. The physical properties of the asphalt binder, including softness, high-temperature performance, and plastic deformation capacity, were initially evaluated through three indicators’ tests on asphalt. A preliminary performance evaluation of the asphalt binder was performed. The high-temperature stability of asphalt binders was evaluated using dynamic shear rheometry. The rutting resistance of the material was evaluated by temperature sweep tests, and the shear deformation resistance of the material was evaluated by frequency sweep tests. Multiple stress creep recovery tests determine the material’s ability to resist permanent deformation. The low-temperature rheological properties were evaluated by bending beam rheology tests. The study found that the waste oyster shell powder is a biomass with a porous irregular petal shape. No new characteristic absorption peaks are formed by mixing with asphalt. And, it can improve the viscosity, thermal stability, and temperature-sensitive properties of the material. It significantly improved the high-temperature rheological performance, rutting coefficient, and recovery elasticity of the material. However, it has little effect on low-temperature rheological performance. This study provides a solid foundation for the effective use of biowaste in engineering materials.

Impact of Rubber Modifier on the Rheological Properties of Asphalt

2014 ◽  
Vol 997 ◽  
pp. 465-470
Author(s):  
Zhi Gang Zhou ◽  
Min Lei ◽  
Ju Yong Chen
Keyword(s):  
Low Temperature ◽  
Physical Properties ◽  
Rheological Properties ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Crumb Rubber ◽  
Enhanced Resistance ◽  
Low Temperature Cracking ◽  
Reduced Temperature ◽  
Modify Asphalt

Using crumb rubber to modify asphalt binder can not only improve the binder properties, but also shows environmental and economical advantages. To evaluate the function of the RM modifier in binders, physical properties and rheological properties were investigated. Specifically, the high and low temperature sweep methods was used to investigate influence that the RM on rheological properties of binders. Results showed that binder modification using the RM produces significant increase in both physical properties and rheological properties. Consequently, enhanced resistance to permanent deformation, increased low-temperature cracking and reduced temperature sensitivity can be expected in RM binder.

Sign in / Sign up

Export Citation Format

Share Document