Evaluation of Susceptibility of Asphalt Binders to Rutting through MSCR Test

Using modified asphalt binder is one of the most effective methods to solve the rutting problem of asphalt pavement, but the traditional G ∗ / sin δ parameter is not enough to characterize the rutting resistance of modified asphalt in field use. In order to accurately evaluate the high temperature performance of asphalt and establish the relationship between the rutting resistance of binder and mixture, two kinds of matrix asphalt and three kinds of modified asphalt were selected for DSR and MSCR tests. G ∗ / sin δ , nonrecoverable creep compliance Jnr, recovery rate R, and other parameters were used to characterize the permanent deformation resistance of the binder, and the correlation between these parameters and the results of rutting test was analyzed. The results show that Jnr3.2 can accurately characterize the permanent deformation resistance of asphalt, while the stress sensitivity index Jnrdiff is not applicable to all types of modified asphalt. In contrast, Jnrslope can better reflect the stress sensitivity of asphalt, and Jnrslope is significantly correlated with the results of rutting test.

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PHYSICAL PROPERTIES AND STORAGE STABILITY OF GEOPOLYMER MODIFIED ASPHALT BINDER

Jurnal Teknologi ◽

10.11113/jt.v78.9508 ◽

2016 ◽

Vol 78 (7-2) ◽

Author(s):

Ahmad Nazrul Hakimi Ibrahim ◽

Nur Izzi Md. Yusoff ◽

Norliza Mohd Akhir ◽

Muhamad Nazri Borhan

Keyword(s):

Physical Properties ◽

Storage Stability ◽

Permanent Deformation ◽

Asphalt Binder ◽

Asphalt Binders ◽

Modified Asphalt ◽

Modified Asphalt Binder ◽

Potential Alternative ◽

Modified Binder ◽

And Storage

This study was conducted to investigate the physical properties and storage stability of the 80/100 penetration grade asphalt modified with geopolymer. In this research, fly ash and alkali activators, namely sodium silicate (Na2SiO3) and sodium hydroxide (NaOH), were used as geopolymer components. The penetration, Ring and Ball softening point, ductility, and viscosity tests were conducted to determine the physical properties of geopolymer modified asphalt (GMA). Five samples of asphalt binders with varying percentages of geopolymer, namely 0, 3, 5, 7 and 9%, by weight of asphalt binder were studied. Results show that geopolymer has good compatibility with asphalt binder. The addition of geopolymer into asphalt binder resulted in improved permanent deformation resistance of the modified binder compared to that of the conventional asphalt. In conclusion, geopolymer could be considered as a potential alternative in the modification of the properties of asphalt binder.

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Effect of PolyPhosphoric Acid on Rutting Resistance of Asphalt Concrete Mixture

Civil Engineering Journal ◽

10.28991/cej-2019-03091383 ◽

2019 ◽

Vol 5 (9) ◽

pp. 1929-1940

Author(s):

Hussein Burhan Raof ◽

Mohammed Qadir Ismael

Keyword(s):

Asphalt Binder ◽

Asphalt Mixture ◽

Evaluation Process ◽

Asphalt Binders ◽

Rutting Resistance ◽

Ambient Temperatures ◽

Modified Asphalt ◽

Modified Asphalt Binder ◽

Tracking Device ◽

Wheel Tracking

The action of high repeated trucks load associated with dramatically elevated ambient temperatures leads to the most harmful distress in asphalt pavements occurred in Iraq known as rutting. Essentially, it is produced from the accumulation of irrecoverable strains, which mainly occurred in the asphalt layers. That visually demonstrated as a longitudinal depression in the wheel paths as well as small upheavals to the sides. Poly Phosphoric Acid (PPA) has been used as a means of producing modified asphalt binders and the interest to use it has increased in recent years. The PPA provides modified asphalt binder, which is relatively cheaply produced compared to polymer-modified asphalt. In this paper, PPA was used by three-percentages 1, 2 and 3 % of the weight of asphalt binder. Two asphalt binder grades were used in this study, 40-50 and 60 -70. The evaluation process based on conducting Marshall Test, Compressive strength test and the Wheel Tracking test. The optimum asphalt content was determined for eight asphalt mixture. The results of the index of retained strength of modified asphalt were slightly increased compared with conventional mixtures. The rut depth was determined by using wheel tracking device at different temperature (45 and 55 ºC) for each asphalt mixture under 10000 cycles and the results showed that modified asphalt with PPA produced mixtures with more rutting resistance than conventional asphalt mixture. Moreover, the effect of PPA on rutting resistance for asphalt grade 60-70 was higher than asphalt grade 40-50.

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Characterization of neat and modified asphalt binders and mixtures in relation to permanent deformation

Science and Engineering of Composite Materials ◽

10.1515/secm-2019-0022 ◽

2019 ◽

Vol 26 (1) ◽

pp. 379-387

Author(s):

Iuri S. Bessa ◽

Márcia M. Takahashi ◽

Kamilla L. Vasconcelos ◽

Liedi L. B. Bernucci

Keyword(s):

Permanent Deformation ◽

Asphalt Binder ◽

Asphalt Mixture ◽

Asphalt Mixtures ◽

Asphalt Binders ◽

Rutting Resistance ◽

Modified Asphalt ◽

Recoverable Compliance ◽

Modified Binder ◽

Deformation Tests

AbstractThe addition of polymers on asphalt binders aims to enhance their performance, especially at high temperatures, which correspond to rutting resistance. The Superpave rutting parameter (|G*|/sinδ) has been considered to be inadequate to characterize the performance of modified materials, therefore the Multiple Stress Creep and Recovery (MSCR) test was developed, providing the parameter non-recoverable compliance (Jnr). This research has the main objective of correlating asphalt binders performance-based characterization with rutting resistance of asphalt mixtures, and presents results obtained for one conventional (50/70 penetration grade) and two modified asphalt binders (2.1% RET and 1.9% RET) regarding their rheological characteristics. With the use of the dynamic shear rheometer (DSR), master curves and MSCR results were obtained for the three binders. In addition, permanent deformation tests were performed on the asphalt mixtures by means of laboratory traffic simulation. The rutting characterization indicated higher permanent deformation resistance for the modified binders for the asphalt binder and the asphalt mixture testing. The main conclusions were that the use of modified binder reduced in approximately 50% the Jnr values and the rut depth; also, the asphalt binders’ characteristics were able to predict the asphalt mixtures rutting resistance.

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CHARACTERIZATION OF THE PERFORMANCE OF ALUMINUM OXIDE NANOPARTICLES MODIFIED ASPHALT BINDER

Jurnal Teknologi ◽

10.11113/jt.v78.8003 ◽

2016 ◽

Vol 78 (4) ◽

Cited By ~ 2

Author(s):

Shaban Imael Albrka Ali ◽

Amiruddin Ismail ◽

Nur Izzi Md. Yusoff ◽

Norhidayah Abdul Hassan ◽

Ahmad Nazrul Hakimi Ibrahim

Keyword(s):

Aluminum Oxide ◽

Softening Point ◽

Permanent Deformation ◽

Asphalt Binder ◽

Asphalt Binders ◽

Aluminum Oxide Nanoparticles ◽

Asphalt Cement ◽

Modified Asphalt ◽

Modified Asphalt Binder ◽

Rotational Viscosity

This study investigates the physical and rheological properties of asphalt binders modified by nano aluminum oxide (AL2O3). Several conventional tests were conducted, including penetration, softening point and ductility, rotational viscosity and dynamic shear rheometer (DSR). Based on the results of the tests, it was found that the hardness of modified asphalt binders increased with the addition of nano AL2O3 up to 5%. As a result of the increased hardness, the softening point of modified asphalt improved compared with base asphalt binders. The rheological property of modified binders was enhanced at low and high temperatures. The results of a DSR test revealed that the G* were improved, whereas the δ decreased slightly. The addition of a different percentage of AL2O3 to base binder had a remarkable influence on resistance to permanent deformation (high temperature rutting and low temperature fatigue). Results recognize 5 wt.% as the optimum content of the modifier. Therefore, nano AL2O3 can be considered as a proper alternative additive to modify the properties of asphalt cement.

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Evaluating the Rheological, Chemical and Morphological Properties of SBS Modified Asphalt-Binder under Multiple Aging and Rejuvenation Cycles

Applied Sciences ◽

10.3390/app11199242 ◽

2021 ◽

Vol 11 (19) ◽

pp. 9242

Author(s):

Xiaobing Chen ◽

Yunfeng Ning ◽

Yongming Gu ◽

Ronglong Zhao ◽

Jinhu Tong ◽

...

Keyword(s):

Asphalt Binder ◽

Morphological Properties ◽

Asphalt Binders ◽

Laboratory Simulation ◽

Fatigue Properties ◽

Type I ◽

Modified Asphalt ◽

Modified Asphalt Binder ◽

Microscopic Morphology ◽

Sbs Modified Asphalt

To investigate the influence of multiple cycles of aging and rejuvenation on the rheological, chemical, and morphological properties of styrene–butadiene–styrene (SBS)-modified asphalt-binders, the asphalt-binders were aged using two laboratory simulation methods, namely a rolling thin film oven (RTFO) test for short-term aging and pressure aging vessel (PAV) for long-term aging. The asphalt-binders were then rejuvenated with three types of rejuvenators (Type I, II, and III) with different dosages (i.e., 6%, 10%, and 14% for the first, second, and third rejuvenation, respectively). A dynamic shear rheometer (DSR) was then used to analyze the effect of rejuvenators on the rheological properties of all the asphalt-binders. The changes in the functional groups and microscopic morphology in the process of multiple aging and rejuvenation cycles were studied using Fourier transform infrared (FTIR) and atomic force microscopy (AFM). The results indicated that the three rejuvenators could soften the stiffness and restore the microstructures of the aged asphalt-binders in the process of repeated aging and rejuvenation from DSR and AFM testing. Considering the rutting and fatigue properties, the Type I rejuvenator exhibited the potential to achieve the desired rejuvenation effects under multiple rejuvenation cycles. During the multiple aging and rejuvenation cycles, the aging resistance of SBSMA decreased gradually from the FTIR results. This inherently limited the number of repeated rejuvenation cycles. This research is conducive to promoting the application of repeated penetrating rejuvenation.

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Evaluation of Selected Performance Properties of Nanoclay-Modified Asphalt Binders

MATEC Web of Conferences ◽

10.1051/matecconf/201927103006 ◽

2019 ◽

Vol 271 ◽

pp. 03006

Author(s):

Mohammad N. Hassan ◽

M M Tariq Morshed ◽

Zahid Hossain

Keyword(s):

Colloidal Stability ◽

Asphalt Binder ◽

Weather Conditions ◽

Good Alternative ◽

Asphalt Binders ◽

Chemical Compositions ◽

Modified Asphalt ◽

Adverse Weather ◽

Modified Asphalt Binder ◽

Improved Performance

Asphalt binders are often modified with additives such as acid, polymer, or a combination of multiple additives to achieve improved performance to sustain heavy loads and adverse weather conditions. According to some previous researches, nanoclay can be a good alternative of currently practiced Styrene-Butadiene-Styrene (SBS) modification, and the former is expected to reduce the overall cost of the asphalt binder. Three types of nanoclay (Cloisite 10A, 11B, and 15A) were blended with asphalt binders prepared from two different sources (Arabian Crude and Canadian Crude). A blending protocol has been developed to blend nanoclay with the base binders. Mechanical properties including viscosity, rutting parameter have undergone significant changes after the nanoclay modification. It was also observed that nanoclay modified binders offer different moisture susceptibility while bonding with different aggregates; the nanoclay modified asphalt binder exhibits better bonding with gravel than sandstone. Mechanistic properties such as viscosity and rutting parameter are found to be highly correlated with the chemical compositions. Binders from the Canadian crude showed more colloidal stability than binders from the Arabian crude after nanoclay modification.

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Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder

Fibers ◽

10.3390/fib9040025 ◽

2021 ◽

Vol 9 (4) ◽

pp. 25

Author(s):

Ang Li ◽

Abdu A. Danladi ◽

Rahul Vallabh ◽

Mohammed K. Yakubu ◽

Umar Ishiaku ◽

...

Keyword(s):

Linear Regression Analysis ◽

Asphalt Binder ◽

Cost Effective ◽

Cellulose Microfibrils ◽

Asphalt Binders ◽

Asphalt Emulsion ◽

Clear Trend ◽

Modified Asphalt ◽

Weight Content ◽

Modified Asphalt Binder

Cellulose microfibrils (CMFs) and micronized rubber powder (MRP) can be derived from low or negative-cost agricultural/industrial waste streams and offer environment-friendly and cost-effective pathways to develop engineering products. This study investigated the efficacy of adding these micromodifiers on the performance characteristics of asphalt binders. In this work, samples were produced using a mixture of slow-setting anionic asphalt emulsion with various combinations of MRP (at 0, 2 and 10 wt %) and four types of CMFs (hydrophobic and hydrophilic with crystalline ratios of 86% and 95%) at 0, 2 and 5 wt %. The performance of modified asphalt samples was assessed by penetration depth (PD), softening point (SP), and penetration index (PI). Linear regression analysis showed that adding CMFs and/or MRP reduced PD and increased SP values. The type of CMFs significantly affected the performance, which becomes more distinct with the increased weight content of CMFs. While hydrophilic CMFs caused increases in SP and PI values, no clear trend was seen to determine the effect of CMF crystallinity. It was also discovered that the combined addition of CMF and MRP achieved similar PI values at lower total weight content compared to using MRP alone.

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Highly Modified Asphalt Binder for Asphalt Crack Relief Mix

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/2630-14 ◽

2017 ◽

Vol 2630 (1) ◽

pp. 110-117 ◽

Cited By ~ 3

Author(s):

Matheus S. Gaspar ◽

Kamilla L. Vasconcelos ◽

Amanda H. M. da Silva ◽

Liedi L. B. Bernucci

Keyword(s):

Hot Mix Asphalt ◽

Asphalt Binder ◽

Asphalt Mixture ◽

Bending Test ◽

Asphalt Binders ◽

Reflective Cracking ◽

Modified Asphalt ◽

Asphalt Overlay ◽

Modified Asphalt Binder ◽

Styrene Butadiene

Reflective cracking is a common issue with respect to rehabilitated asphalt pavements, especially when the rehabilitation is done by applying a hot-mix asphalt overlay on the existing damaged pavement. Several approaches can be adopted to delay reflective cracking. They include an increase of the overlay thickness and the use of a stress relief asphalt mixture (SRAM), which is a fine-graded, flexible, and thin asphalt interlayer. Because the efficiency of a SRAM is highly related to the properties of the asphalt binder used in the mixture, it is of interest to use a highly modified asphalt (HiMA) binder. This paper describes a field test comprising three sections at BR-116 (a heavily trafficked highway in Brazil). One of the rehabilitation strategies used for a cracked asphalt pavement was a 2.5-cm SRAM (produced with a HiMA binder) and 5-cm styrene–butadiene–styrene (SBS) hot-mix asphalt (HMA). The other two strategies were to apply SBS HMA overlays of different thicknesses (7.5 cm and 10.5 cm). The aim was to evaluate and compare the capability of these solutions to control reflective cracking. Rheological properties and multiple stress creep and recovery tests were performed on the asphalt binders, and the semicircular bending test was performed on the asphalt mixtures. The surface conditions were monitored, and the results for each section were compared. After a 29-month period, the section that received the interlayer had the lowest cracked area and showed better resistance than the overlays did to reflective cracking and better maintenance of the original thickness of the pavement.

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Preparation and Properties of Ageing Resistant Asphalt Binder with Various Anti-Ageing Additives

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.1062 ◽

2011 ◽

Vol 71-78 ◽

pp. 1062-1067 ◽

Cited By ~ 14

Author(s):

Zhen Gang Feng ◽

Jian Ying Yu ◽

Heng Long Zhang ◽

Dong Liang Kuang

Keyword(s):

Synergistic Effect ◽

Softening Point ◽

Asphalt Binder ◽

Asphalt Binders ◽

Modified Asphalt ◽

Uv Absorber ◽

Modified Asphalt Binder ◽

Uv Absorbers ◽

Compound Modification ◽

Oxidative Ageing

The modified asphalt binders with various anti-ageing additives, including ultraviolet (UV) absorber, antioxidant and combination of them, were prepared, and the effects of UV absorber contents, antioxidant contents and combination of UV absorber and antioxidant on physical properties and ageing characteristics of the asphalt binder were investigated. Results show that the ductility of asphalt binder increases whereas the softening point and viscosity decrease with addition of anti-ageing additives. UV absorbers and antioxidants exhibit different influences on the ageing properties of asphalt binder. The thermal- and photo-oxidative ageing performance of asphalt binder can be simultaneously improved by the compound modification with UV absorber and antioxidant. The combination of UV326 and antioxidant 1010 shows synergistic effect in preventing the asphalt binder from thermal- and photo-oxidative ageing, which contributes to excellent ageing resistance of modified asphalt binder.

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