Preparation of Octadecyl Amine Grafted over Waste Rubber Powder (ODA-WRP) and Properties of Its Incorporation in SBS-Modified Asphalt

Han, Meizhao; Zeng, Xiang; Muhammad, Yaseen; Li, Jing; Yang, Jing; Song, Yang; Wei, Yunhao; Meng, Fei

doi:10.3390/polym11040665

Cited by 30 publications

(15 citation statements)

References 49 publications

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“…The performance of flexible pavement is closely related to the rheological properties of bituminous binder. To improve the durability of pavement, a series of bitumen modifiers have been developed and applied, including styrene butadiene styrene (SBS) [9,10], crumb rubber [11,12,13], bio oil [14], plastic [15] and different types of fibers [16]. The main components of raw bitumen are statures, aromatics, resins and asphaltenes, and the above-mentioned modifiers have good compatibility with the bitumen fractions.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation of Lignocellulosic Biomass as Performance Improver for Bituminous Materials

et al. 2019

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Lignocellulosic biomass has gained increasing attention as a performance modifier for bituminous material due to the vast amount available, its low cost and its potential to improve the durability of pavement. However, a comprehensive study concerning both the binder and mixture performance of modified bituminous material with lignocellulose is still limited. This research aims to evaluate the feasibility of applying lignocellulose as bitumen modifier by rheological, chemical and mechanical tests. To this end, two lignocellulosic biomass modified bituminous binders and corresponding mixtures were prepared and tested. The chemical characterization revealed the interaction between lignocellulosic biomass and bitumen fractions. Rheological test results have shown that lignocellulosic modifiers improve the overall performance of bituminous binder at high, intermediate and low temperatures. The findings obtained by mixture mechanical tests were identical to the binder test results, proving the positive effect of lignocellulosic biomass on overall paving performance of bituminous materials. Although lignocellulosic modifier slightly deteriorates the bitumen workability, the modified bitumen still meets the viscosity requirements mentioned in Superpave specification. This paper suggests that lignocellulosic biomass is a promising modifier for bituminous materials with both engineering and economic merits. Future study will focus on field validation and life cycle assessment of bituminous pavement with lignocellulosic biomass.

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Section: Introductionmentioning

confidence: 99%

Laboratory Investigation of Lignocellulosic Biomass as Performance Improver for Bituminous Materials

et al. 2019

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“…The infrared absorption spectra of acrylamide, UR and GR are shown in Figure 2 b. In the curve of acrylamide, the peak due to the stretching vibration of –NH 2 is found at 3334 cm −1 [ 34 ], and the peaks caused by the stretching vibration of =CH 2 and C=C are observed at 3100 cm −1 and 1650 cm −1 , respectively [ 35 ]. The peaks of 1657 cm −1 and 1600 cm −1 result from the –NHCO– stretching vibration [ 36 ].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Activation Method of Rubber on the Performance of Modified Asphalt Binder

et al. 2020

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Poor storage stability is a key problem restricting the rapid development and wide application of rubber-modified asphalt binder, and activation of rubber has shown good prospects to solve this problem. In this study, two activation methods, coating by polyamide 6 and grafting by acrylamide, were introduced to treat crumb rubber. Then the activated rubber was added to base asphalt binder to prepare modified asphalt binder. The chemical structure and morphology of rubber powder before and after activation and of asphalt binder before and after modification were characterized by Fourier transformation infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The conventional and rheological properties and storage stability were analyzed to reveal the influence of activation method on the performance of asphalt binder. The results showed that after being activated, the surface of the rubber is loose and rough. A chemical reaction did not occur during activation by polyamide but occurred during activation by acrylamide. The activation of the rubber effectively improved the high- and low-temperature performance, and the softening difference decreased by 79.8%. This is because the interaction between rubber and asphalt binder was enhanced through activation of rubber, and grafting activation had better effect due to the chemical reaction between the basic amide groups of acrylamide and acid groups of asphalt binder.

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“…The infrared absorption spectrums of CR and AM–CR are shown in Figure 1. It can be seen that there were three new absorption peaks in the infrared absorption spectrums of AM–CR compared with that of CR, including the absorption peak at 3334 cm −1 caused by the stretching vibration of –NH 2 (primary amide) [32], the absorption peak at 1657 cm −1 and 1600 cm −1 caused by the stretching vibration of –NHCO– [3], while these new chemical bonds are derived from acrylamide. In the infrared absorption spectrum of acrylamide, the peaks appearing at 3100 cm −1 and 1650 cm −1 were the stretching vibration peaks of =CH 2 and C=C [33], respectively, which did not appear in the infrared absorption spectrum of AM–CR, and the absorption peak at 1425 cm −1 caused by the stretching vibration of –C–N overlaps with the absorption peak at 1427 cm −1 caused by anti-symmetric angular vibration of –CH 3 in rubber.…”

Section: Resultsmentioning

confidence: 99%

“…China’s scrap tire production has ranked first in the world for ten consecutive years and is expected to reach 20 million tons by 2020 [1]. Traditional treatment methods such as incineration, landfill or simple accumulation will not only occupy land resources, but also release harmful substances, pollute soil and groundwater, which will endanger human survival [2,3]. Rubber waste containing macromolecule elastomers can be ground into crumb rubber and added to asphalt, which can not only improve the road performance of asphalt and driving comfort, but also improve the economic and environmental benefits [4,5].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Rheological Properties and Storage Stability of Modified Asphalt Based on the Grafting Activation of Crumb Rubber

Xie

Yang

et al. 2019

Polymers

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Acrylamide with a double bond and amide group can not only copolymerize with macromolecules of crumb rubber but also react with acidic groups in asphalt, so it was selected as a modifier to activate crumb rubber through chemical graft action. The purpose is to improve the compatibility between crumb rubber and asphalt and thus improve the rheological properties and storage stability of rubber asphalt. Infrared spectroscopy (IR) and scanning electron microscopy (SEM) were used to characterize the crumb rubbers and their modified asphalt. It was found that the crumb rubber of grafting acrylamide had better compatibility in asphalt due to its larger specific surface area and chemical reaction with asphalt. In addition, the high temperature rheological test, low temperature creep test, and polymer separation test were carried out to study the effect of grafted activated crumb rubber on the properties of modified asphalt. The results showed that compared with modified asphalt with common crumb rubber (CRMA), the rheological properties and storage stability of modified asphalt with grafting activated crumb rubber (A–G–R) were improved significantly. The results of microscopic and macroscopic tests show that the activated rubber particles have a larger contact area with asphalt due to a rougher surface and the chemical cross-linking between rubber particles and asphalt further strengthens their interaction. Therefore, there is a relatively stable blend system formed in modified asphalt, and its performance of modified asphalt has been improved.

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Preparation of Octadecyl Amine Grafted over Waste Rubber Powder (ODA-WRP) and Properties of Its Incorporation in SBS-Modified Asphalt

Cited by 30 publications

References 49 publications

Laboratory Investigation of Lignocellulosic Biomass as Performance Improver for Bituminous Materials

Laboratory Investigation of Lignocellulosic Biomass as Performance Improver for Bituminous Materials

The Effect of Activation Method of Rubber on the Performance of Modified Asphalt Binder

Investigation on Rheological Properties and Storage Stability of Modified Asphalt Based on the Grafting Activation of Crumb Rubber

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