Effect of mixing sequence on asphalt mixtures containing waste tire rubber and warm mix surfactants

Yu, Huayang; Zhu, Zihan; Leng, Zhen; Wu, Chuanhai; Zhang, Zeyu; Wang, Duanyi; Oeser, Markus

doi:10.1016/j.jclepro.2019.119008

Cited by 105 publications

(49 citation statements)

References 34 publications

(46 reference statements)

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“…Compared with hot-mix asphalt technology, warm-mix asphalt technology can lower the mixing and compaction temperatures, thus saving energy consumption and reducing the emission of harmful gas. erefore, warm-mix asphalt technology can probably be classified as green technology for road construction [17,18]. e application of warm-mix asphalt technology to the porous asphalt pavement can not only improve functional pavements but also can be beneficial to the environment.…”

Section: Introductionmentioning

confidence: 99%

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Jian

Fan

Lin

et al. 2020

Advances in Materials Science and Engineering

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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.

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Section: Introductionmentioning

confidence: 99%

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Jian

Fan

Lin

et al. 2020

Advances in Materials Science and Engineering

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“…To address the issues of engineering properties among low water stability and the short service life of PAC, one possible solution is to use the modified asphalt binder to produce PAC to meet practical needs. Prominent researchers in asphalt modification have led systematic studies on crumb rubber/styrene–butadiene–styrene (CR/SBS) composite modified asphalt with continued efforts, which is a strong base for improving PAC’s engineering properties [ 23 , 24 , 25 , 26 , 27 ]. Based on Jin et al, different types of SBS such as linear SBS and radial SBS, different contents of SBS modifier, and sulfur content have impacts on the properties of the asphalt binder and asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding the improvement of low temperature performance, the results show that under their experimental design, the optimum contents of SBS on asphalt binder and asphalt mixture are 6% and 4.5%, respectively [ 23 , 24 ]. Yu et al have conducted a thorough analysis on wet-process rubberized asphalt binder with warm mix asphalt (WMA) additives and have found that it is effective in alleviating the hardening and cracking of the virgin asphalt binder, exhibiting a more durable service life for the asphalt mixture [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Performance-Guided Design of Permeable Asphalt Concrete with Modified Asphalt Binder Using Crumb Rubber and SBS Modifier for Sponge Cities

et al. 2021

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The construction of sponge city is a major green innovation to implement the concept of sustainable development. In this study, the road performance of permeable asphalt concrete (PAC), which displays pronounced water permeability and noise reduction that are favorable for sponge cities, has been improved with a two-fold modification using styrene–butadiene–styrene (SBS) and crumb rubber (CR). Four percent SBS and three different ratios (10%, 15%, and 20%) of CR have been used to modify the virgin asphalt binder. The Marshall design has been followed to produce PAC samples. To evaluate the asphalt binder performance, multiple-stress creep-recovery (MSCR) test, linear amplitude sweep (LAS) test, and engineering property test programs including softening point test, penetration test, and rotational viscosity test have been conducted. Freeze–thaw splitting test, Hamburg wheel-tracking test, resilient modulus test, and permeability coefficient test have been performed to evaluate the asphalt mixture performance. The test results show that the addition of SBS and CR reduces the permeability coefficient, but significantly improves the high temperature performance, fatigue performance, and rutting resistance as well as the resilient modulus. However, the optimum rubber content should not exceed 15%. Meanwhile, after adding CR and SBS modifier, the indirect tensile strength (ITS) and tensile strength ratio (TSR) increase. It indicates that the moisture stability and crack resistance have been improved by the composite modification effect.

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“…Despite existing research showing that CRA could improve the rutting resistance and noise reduction and prolong the service life of pavement [ 11 , 12 , 13 , 14 ], there is still a series of problems, such as easy segregation, high viscosity and poor performance at low-temperature [ 15 , 16 ]. In this context, some measures should be taken to improve its performance deficiencies.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Micro-Mechanism and High- and Low-Temperature Rheological Properties of Disintegrated High Volume Crumb Rubber Asphalt (DHVRA)

Han

et al. 2021

Materials

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The aims of this paper are to prepare disintegrated high volume crumb rubber asphalt (DHVRA) with low viscosity, good workability and low-temperature performance by adding disintegrating agent (DA) in the preparation process, and to further analyze the disintegrating mechanism and evaluated high-temperature and low-temperature rheological properties. To obtain DHVRA with excellent comprehensive performance, the optimum DA dosage was determined. Based on long-term disintegrating tests and the Fluorescence Microscopy (FM) method, the correlations between key indexes and crumb rubber (CR) particle diameter was analyzed, and the evaluation indicator and disintegrating stage division standard were put forward. Furthermore, Fourier transform infrared spectroscopy (FT-IR) and Gel Permeation Chromatography (GPC) was used to reveal the reaction mechanism, and the contact angle test method was adopted to evaluate the surface free energy (SFE). In addition, the high-temperature and low-temperature rheological properties were measured, and the optimum CR content was proposed. Results indicated that the optimum DA dosage was 7.5‰, and the addition of DA promoted the melt decomposition of CR, reduced the viscosity and improved the storage stability. The 135 °C rotational viscosity (RV) of DHVRA from mixing for 3 h could be reduced to 1.475 Pa·s, and the softening point difference was even less than 2 °C. The linear correlation between 135 °C RV and the diameter of CR particle in rubber asphalt system was as high as 0.968, and the viscosity decay rate (VDR) was used as the standard to divide the disintegrating process into a fast disintegrating stage, stable disintegrating stage and slight disintegrating stage. Compared to common rubber asphalt (CRA), DHVRA has an absorption peak at 960 cm−1 caused by trans olefin = C-H, and higher molecular weight and polar component of surface energy. Compared with CRA, although the high-temperature performance of DHVRA decreases slightly, the low-temperature relaxation ability can be greatly improved.

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Effect of mixing sequence on asphalt mixtures containing waste tire rubber and warm mix surfactants

Cited by 105 publications

References 34 publications

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Effects of Surfactant Warm‐Mix Additives on the Rheological Properties of High‐Viscosity Asphalt

Performance-Guided Design of Permeable Asphalt Concrete with Modified Asphalt Binder Using Crumb Rubber and SBS Modifier for Sponge Cities

Evaluation of Micro-Mechanism and High- and Low-Temperature Rheological Properties of Disintegrated High Volume Crumb Rubber Asphalt (DHVRA)

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