Multiple Stress–Creep–Recovery Behavior and High-Temperature Performance of Styrene Butadiene Styrene and Polyacrylonitrile Fiber–Modified Asphalt Binders

This paper presents a laboratory study of Styrene-Butadiene-Styrene (SBS)/ crumb rubber modified asphalt by the two-step method. The conventional properties of the modified asphalt were determined. The effects of crumb rubber content and shearing time on the performance of the crumb rubber modified asphalt and composite modified asphalt. The results show that the crumb rubber contents and shearing time have significant impacts on the performance of the modified asphalt. With the crumb rubber content increasing, the high temperature performance was improved and the low temperature chanethe softening point increases and penetration decrease, and the ductility change little. It is comfortable for workability at the crumb rubber content of 20%. The viscosity is an important measurement for the workability of the modified asphalt. After adding the stabilizer, the viscosity increases until the shearing time reaching 1.5h, then it will decrease gradually.

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Fatigue performance characterization of styrene-butadiene-styrene and crumb rubber composite modified asphalt binders with high crumb rubber contents

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.129979 ◽

2022 ◽

Vol 331 ◽

pp. 129979

Author(s):

Chenguang Shi ◽

Wenxin Zhou ◽

Tianling Wang ◽

Xing Cai ◽

Houzhi Wang ◽

...

Keyword(s):

Crumb Rubber ◽

Fatigue Performance ◽

Asphalt Binders ◽

Performance Characterization ◽

Modified Asphalt ◽

Rubber Composite ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

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The effects of base binder and styrene–butadiene–styrene structure on rutting resistance of polymer–nanocomposite asphalt mixture

Journal of Elastomers & Plastics ◽

10.1177/0095244317714640 ◽

2017 ◽

Vol 50 (3) ◽

pp. 256-275 ◽

Cited By ~ 1

Author(s):

Mahdi Delaviz Bayekolaei ◽

Koorosh Naderi ◽

Fereidoon Moghadas Nejad

Keyword(s):

Asphalt Mixture ◽

Polymer Nanocomposite ◽

Asphalt Mixtures ◽

Asphalt Binders ◽

Rutting Resistance ◽

Modified Asphalt ◽

Modified Binders ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

In recent years, the use of nano materials for improving various mechanical and performance-related properties of polymer-modified asphalt binders has been growing rapidly. However, few researches investigated the effects of base binder and styrene–butadiene–styrene (SBS) structure on rutting resistance of polymer-nanocomposite-modified asphalt mixtures. This study investigated the effect of polymer–nanocomposite modification, using two different penetration grade asphalt binders and two types of SBS, on rutting properties of asphalt mixtures. Rheological properties of modified binders, Marshall stability, resilient modulus, and rut depth in wheel-tracking tests were used to evaluate the rutting performance of the modified binders and mixtures. The results indicated that both base binder type and SBS structure had significant effect on rutting resistance of polymer-nanocomposite-modified asphalt mixtures.

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Study on Styrene-Butadiene-Styrene Modified Asphalt Binders Relaxation at Low Temperature

Materials ◽

10.3390/ma14112888 ◽

2021 ◽

Vol 14 (11) ◽

pp. 2888

Author(s):

Sylwia Dziadosz ◽

Mieczysław Słowik ◽

Filip Niwczyk ◽

Marcin Bilski

Keyword(s):

Low Temperature ◽

Force Measurement ◽

Asphalt Binder ◽

Asphalt Binders ◽

Short Term ◽

Modified Bitumen ◽

Modified Asphalt ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

The paper presents the results of laboratory investigation on asphalt binders relaxation at low temperature, carried out in a ductilometer using the tensile test with continuous force measurement. Polymer modified asphalt binder samples consisting of a 50/70 penetration grade bitumen mixed with a concentrate of styrene-butadiene-styrene (SBS) modified bitumen—a 160/220 penetration grade bitumen modified with a SBS copolymer in the amount of 9%—were tested. Therefore, polymer modified binders containing 3%, 4.5%, 6% and 7.5% SBS, respectively, were obtained and investigated. Tensile tests were performed at −16 °C on samples before aging and subjected to short-term aging (RTFOT). Test results in the form of relaxation curves have been mathematically described using a modified generalized Maxwell model. Based on the acquired results, it was shown that the increase of the SBS copolymer content in asphalt binder precipitates the relaxation process, while aging slows down this phenomenon. It has also been proven that with increased content of SBS elastomer in asphalt binder, the effect of short-term aging on binder’s stress relaxation ability at low temperatures is reduced.

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Evaluation of the Aging of Styrene-Butadiene-Styrene Modified Asphalt Binder with Different Polymer Additives

Materials ◽

10.3390/ma14195715 ◽

2021 ◽

Vol 14 (19) ◽

pp. 5715

Author(s):

Bangwei Wu ◽

Chufan Luo ◽

Zhaohui Pei ◽

Chuangchuang Chen ◽

Ji Xia ◽

...

Keyword(s):

Complex Modulus ◽

Asphalt Binder ◽

Asphalt Binders ◽

Polymer Additives ◽

Modified Asphalt ◽

Aging Resistance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Aging Indicator ◽

Butadiene Styrene

A wide variety of polymer additives have been widely used in recent years. However, the effect of different polymer additives on the durability of asphalt binders has not been investigated thoroughly. To evaluate the aging property of styrene-butadiene-styrene (SBS) asphalt binder with different polymer additives, three polymer modifiers, namely high modulus modifier (HMM), anti-rutting agent (ARA), and high viscosity modifier (HVM), were added to it. First, the Thin Film Over Test (TFOT) and Pressure Aging Vessel (PAV) was performed on the asphalt binders. The rheological properties of the four asphalt binders before and after aging were then checked by the Dynamic Shear Rheometer Test (DSR). The chemical compositions of the asphalt binders were determined by the Fourier Transform Infrared Spectrometer (FTIR) test. Several aging indicators were adopted to reflect the aging degree of the asphalt binders. The results show that when polymer additives are added to the SBS asphalt binder, the complex modulus, storage modulus, loss modulus, and rutting factor substantially increase and the phase angle decreases. All the test parameters become higher after aging. The phase angle of the SBS asphalt binder is the highest at both unaged and aged states, while its other parameters values are the smallest. Moreover, the Carbonyl Aging Indicator (CAI) of SBS with polymer additives becomes lower under both TFOT and PAV conditions, indicating that polymer additives can improve the aging resistance of SBS asphalt, of which HVM modifies the aging resistance best. Complex Modulus Aging Indicator (CMAI) and Storage Modulus Aging Indicator (SMAI) have the best correlation coefficients with CAI, and the two aging indicators can be used to predict the aging degree of polymer modified asphalt binders.

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Experimental Study on the High-Temperature and Low-Temperature Performance of Polyphosphoric Acid/Styrene-Butadiene-Styrene Composite-Modified Asphalt

Advances in Materials Science and Engineering ◽

10.1155/2019/6384360 ◽

2019 ◽

Vol 2019 ◽

pp. 1-16 ◽

Cited By ~ 2

Author(s):

Xueqian Li ◽

Jianzhong Pei ◽

Jiujian Shen ◽

Rui Li

Keyword(s):

High Temperature ◽

Low Temperature ◽

Recovery Rate ◽

Polyphosphoric Acid ◽

Elastic Recovery ◽

Modified Asphalt ◽

Temperature Performance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

The high-performance asphalt materials are used to replace the ordinary road asphalt that cannot meet the requirements of natural environment and traffic situation, which is the effective way to solve poor asphalt pavement durability. In this paper, polyphosphoric acid- (PPA-) modified asphalt and polyphosphoric acid (PPA)/styrene-butadiene-styrene (SBS) composite-modified asphalt with different PPA content were prepared by using two-type asphalt. The effect of PPA modifier on asphalt was analyzed by using the creep elastic recovery rate, accumulating strain and creep modulus tests. The results showed that asphalt types and the PPA could significantly improve the elastic recovery rate of asphalt, reduce the cumulative strain and creep stiffness of the viscosity part, improve the high-temperature performance, and reduce the permanent deformation of the asphalt under repeated load. The high-temperature performance and low-temperature performance of PPA-modified asphalt were studied by the chemical and physical modification techniques. The advantages of modified asphalt are well developed while reducing the price of it, which has important technical and economic significance.

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Study on Performance of SBS Modified Asphalt

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.753-755.715 ◽

2013 ◽

Vol 753-755 ◽

pp. 715-718

Author(s):

Xiu Hua Yang

Keyword(s):

Block Copolymer ◽

Low Temperature ◽

Modified Asphalt ◽

Temperature Performance ◽

Styrene Butadiene Styrene ◽

Low Temperature Performance ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

Butadiene Styrene

SBS is a styrene - butadiene - styrene block copolymer, the addition of SBS of high and low temperature performance and road can be very good to improve the performance of asphalt. This paper studied the performance of the modified asphalt on the content of modifier.

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Characterization of Desulfurized Crumb Rubber/Styrene–Butadiene–Styrene Composite Modified Asphalt Based on Rheological Properties

Materials ◽

10.3390/ma14143780 ◽

2021 ◽

Vol 14 (14) ◽

pp. 3780

Author(s):

Jingyao Yang ◽

Gang Xu ◽

Peipei Kong ◽

Xianhua Chen

Keyword(s):

High Temperature ◽

Rheological Properties ◽

Construction Materials ◽

Chemical Reactor ◽

Crumb Rubber ◽

Modified Asphalt ◽

Temperature Performance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Butadiene Styrene

With the growing interest in bituminous construction materials, desulfurized crumb rubber (CR)/styrene–butadiene–styrene (SBS) modified asphalts have been investigated by many researchers as low-cost environmental-friendly road construction materials. This study aimed to investigate the rheological properties of desulfurized CR/SBS composite modified asphalt within various temperature ranges. Bending beam rheometer (BBR), linear amplitude sweep (LAS), and multiple stress creep recovery (MSCR) tests were performed on conventional CR/SBS composite modified asphalt and five types of desulfurized CR/SBS modified asphalts. Meanwhile, Burgers’ model and the Kelvin–Voigt model were used to derive nonlinear viscoelastic parameters and analyze the viscoelastic mechanical behavior of the asphalts. The experimental results indicate that both the desulfurized CR/SBS composite modifier and force chemical reactor technique can enhance the crosslinking of CR and SBS copolymer, resulting in an improved high-, intermediate-, and low-temperature performance of desulfurized CR/SBS composite modified asphalt. Burgers’ model was found to be apposite in simulating the creep stages obtained from MSCR tests for CR/SBS composite modified asphalts. The superior high-temperature performance of desulfurized CR/SBS modified asphalt prepared with 4% SBS, 20% desulfurized rubber, and a force chemical reactor time of 45 min contributes to the good high-temperature elastic properties of the asphalt. Therefore, this combination is recommended as an optimal preparation process. In summary, the desulfurization of crumb rubber and using the force chemical reactor technique are beneficial to composite asphalt performance and can provide a new way of utilizing waste tire rubber.

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