Characterization and comparison of high-modulus asphalt mixtures produced with different methods

Yan, Jinhai; Leng, Zhen; Cheng, Long; Zhu, Junqing; Zhou, Luxiaodong

doi:10.1016/j.conbuildmat.2019.117594

Cited by 31 publications

(21 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…change trends of both are consistent with the complex modulus, which demonstrates that the high-modulus modified asphalt containing 6.67% high-modulus agent or more has better high-temperature performance and fatigue performance than the SBS-modified asphalt. e result of better rutting resistance of high-modulus modified asphalt is consistent with previous finding in the literature [23]. In Figure 5(d), it can be observed that the phase angle of asphalt significantly decreases with the increase of high-modulus agent content, from 89.0°of JG0 to 68.2°of JG2 at 70°C; it means that the addition of the high-modulus modifier can contribute to the improvement of the elastic performance of asphalt at high temperature.…”

Section: Dynamic Modulus Testsupporting

confidence: 92%

“…Crumb rubber has been successfully applied into asphalt pavement as a performance enhancer for many decades, and many studies have proved that asphalt rubber (AR) can provide better rutting and fatigue resistance [20][21][22]. It was also found that the rubberized asphalt mixture provided higher modulus than the mixture with hard-grade binder and SBS-modified asphalt mixture [23]. In this study, crumb rubber was selected as a high-modulus agent from Dongguan Yinxi Technology Co., Ltd., China.…”

Section: Asphalt Binders and Modifiersmentioning

confidence: 99%

See 1 more Smart Citation

Mechanism and Rheological Properties of High‐Modulus Asphalt

Yang

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

High-modulus asphalt concrete (HMAC) is considered as an effective paving material for addressing the increasing heavy traffic and rutting problems. Therefore, one high-modulus agent was used in this study to prepare high-modulus asphalt binder with different dosages. The objective of this study is to investigate the performance and modification mechanism of high-modulus asphalt. The effects of high-modulus agent on the viscoelastic properties of asphalt with different dosages were quantified via rheological tests as compared to base binder and styrene-butadiene-styrene- (SBS-) modified asphalt. Moreover, the modification mechanism of the high-modulus agent was examined using fluorescence microscopy and infrared spectrum test. Based on rutting and dynamic modulus tests, the differences of road performances between high-modulus modified asphalt mixture and SBS-modified asphalt mixture were compared. The results demonstrate that the high-modulus agent improves the high-temperature performance and viscoelastic properties of the matrix asphalt. When the dosage increases to 6.67%, the modification effect is better than that of the SBS-modified asphalt. Furthermore, the results of the rutting test show that the high-modulus modified asphalt mixture has better resistance to deformation than the SBS-modified asphalt mixture. The dynamic modulus test further demonstrates that the high-modulus modified asphalt mixture exhibits superior performance in high-temperature range. Fluorescence microscopy shows that the high-modulus agent particles can swell in the asphalt to form polymer links that improve the viscoelastic properties of the asphalt. Based on the results of the infrared spectrum test, it can be concluded that a high-modulus agent changes the asphalt matrix via physical blending modification.

show abstract

Section: Dynamic Modulus Testsupporting

confidence: 92%

Section: Asphalt Binders and Modifiersmentioning

confidence: 99%

Mechanism and Rheological Properties of High‐Modulus Asphalt

Yang

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Further, STR 16, the other structure in the design category, is not clustered within this group. Differ from STR 16, both structures 15 and 17 use the higher modulus asphalt, which has been shown to improve the rutting resistance and bearing capacity [41]. We therefore support existing studies by using the real-world field performance data.…”

supporting

confidence: 68%

A data-driven approach to the evaluation of asphalt pavement structures using falling weight deflectometer

Liu

Cao

Huang

et al. 2022

DCDS-S

View full text Add to dashboard Cite

<p style='text-indent:20px;'>The evaluation of asphalt pavement structures has been a critical challenge in the field due to the practical limitations in methodology. In this paper, we propose a data-driven framework to evaluate structural performance of nineteen widely used asphalt structures in the Research Institute of Highway Ministry of Transport track (RIOHTrack). Specifically, we utilize the unsupervised machine learning method to delineate the similar and disparate performance among tested structures based on four years of falling weight deflectometer (FWD) experiments. Next, the structural performance is investigated on the temporal scale and the dynamic performance variations are captured over the course of the testing. Finally, experimental results are discussed and we provide essential evidence to aid future asphalt pavement design and construction.</p>

show abstract

“…To overcome the negative effect of softening additives on RHMA, previous studies reported that the high-modulus asphalt concrete (HMAC) that originated in France in the early 1980s could be a potential solution [17]. The basic design concept of high-modulus asphalt mixtures is that through the use of hard-grade asphalt binder (with a penetration of about 10-20), fine aggregate gradation, high asphalt binder content (about 6%), and low porosity (generally 3%), the high-modulus asphalt mixture is obtained through the high modulus properties of the hard-grade asphalt binder itself [18].…”

Section: Introductionmentioning

confidence: 99%

Recycling Aged Asphalt Using Hard Asphalt Binder for Hot-Mixing Recycled Asphalt Mixture

Zhou

Liu

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

Increasing the content of reclaimed asphalt pavement material (RAP) in hot-mix recycled asphalt mixture (RHMA) with a satisfactory performance has been a hot topic in recent years. In this study, the performances of Trinidad lake asphalt (TLA), virgin asphalt binder, and aged asphalt binder were first compared, and then the modification mechanism of TLA on virgin asphalt and aged asphalt was explored. Furthermore, the RHMA was designed in accordance with the French norm NF P 98-140 containing 50% and 100% RAP, and their high-temperature stability, low-temperature cracking resistance, and fatigue performances were tested to be compared with the conventional dense gradation AC-20 asphalt mixture. The results show that the addition of TLA changes the component proportion of virgin asphalt binder, but no new functional groups are produced. The hard asphalt binder modified by TLA has a better rutting resistance, while the fatigue and cracking resistance is lower, compared to both aged and virgin asphalt. The high-modulus design concept of RHMA is a promising way to increase the RAP content in RHMA with acceptable performance. Generally, the RHMA with 50% RAP has similar properties to AC-20. And, when the RAP content reaches 100%, the high- and low-temperature performance and anti-fatigue performance of RHMA are better than AC-20 mixture. Thus, recycling aged asphalt using hard asphalt binder for hot-mixing recycled asphalt mixture to increase the RAP content is feasible.

show abstract

Characterization and comparison of high-modulus asphalt mixtures produced with different methods

Cited by 31 publications

References 8 publications

Mechanism and Rheological Properties of High‐Modulus Asphalt

Mechanism and Rheological Properties of High‐Modulus Asphalt

A data-driven approach to the evaluation of asphalt pavement structures using falling weight deflectometer

Recycling Aged Asphalt Using Hard Asphalt Binder for Hot-Mixing Recycled Asphalt Mixture

Contact Info

Product

Resources

About