Article
Polymer Science
Gang Xu, Yunhong Yu, Jingyao Yang, Tianling Wang, Peipei Kong, Xianhua Chen
Summary: The study demonstrated that the combination of crumb rubber from waste tires and SBS modifier in SBS/DCRMB formed an elastic three-dimensional network structure, which contributed to maintaining the properties of bitumen during aging process. Compared to SBSMB, SBS/DCRMB exhibited superior rheological properties and higher resistance to aging.
Article
Green & Sustainable Science & Technology
You Wu, Peng Huang, Yunhong Yu, Chenguang Shi, Huimin Chen, Houzhi Wang, Jun Yang, Zhen Leng, Wei Huang
Summary: The crumb rubber (CR) recycled from waste tires can effectively improve the mechanical properties of bitumen. By analyzing the results of stress-controlled large amplitude oscillatory shear (LAOS) tests, it is concluded that the incorporation of CR has a positive influence on the nonlinear properties of bitumen, which effectively improves the stress bearing capacity. However, simply increasing the CR content does not always improve the performance of bitumen.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Zhiheng Wu, Yilin Huang, Lifa Gui, Lizhe Liang, Jingwei Ying, Weiqing Li, Pei Kang Shen, Zhi Qun Tian
Summary: Through incorporating 3D porous graphene as a reinforced additive, the compatibility of SBS and CR in asphalt can be effectively improved, leading to enhanced high and low temperature performance and fatigue resistance of the modified asphalt. The nanopores in graphene contribute to the absorption of nonpolar molecules in asphalt, while the non-pore part interacts with polar molecules, breaking the original colloidal structures and promoting the pavement performance of the modified asphalt. This research highlights the potential of 3D porous graphene as a new additive for high-grade pavement engineering.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Li'e Wang, Zhu Luo, Le Yang, Hai Wang, Jincheng Zhong
Summary: The styrene content in SBR significantly affects its fatigue characteristics and rheological properties, with higher styrene content leading to prolonged dynamic fatigue life and reduced crack growth rate.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Green & Sustainable Science & Technology
Chenguang Shi, Wenxin Zhou, Tianling Wang, Xing Cai, Houzhi Wang, Jun Yang, Jinxiang Hong, Minghui Gong
Summary: Using crumb rubber (CR) recycled from waste tires as an additive can improve the mechanical performance of asphalt mixture. The effect of CR contents and control modes on the fatigue performance of asphalt binders was studied, and it was found that asphalt binders experience different stages under controlled-strain and controlled-stress loading. A unified fatigue parameter was proposed to evaluate the fatigue resistance, and the best fatigue performance was observed in SBS/CR CMA binder with 40 wt% CR.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Jingyao Yang, Gang Xu, Peipei Kong, Xianhua Chen
Summary: Research on desulfurized crumb rubber (CR)/styrene-butadiene-styrene (SBS) modified asphalt has shown that the combination of desulfurization and the force chemical reactor technique can improve the high-, intermediate-, and low-temperature performance of the asphalt. The use of Burgers' model in simulating creep stages from MSCR tests for CR/SBS composite modified asphalts was found to be appropriate. The optimal preparation process for desulfurized CR/SBS modified asphalt involves 4% SBS, 20% desulfurized rubber, and a force chemical reactor time of 45 min.
Article
Construction & Building Technology
Yan Li, Guojing Huang, Yinzhang He, Xizhong Xu, Su Gao
Summary: In order to explore the effect of waterborne polyurethane (WPU) on the performance of emulsified styrene-butadiene rubber (SBR) asphalt and expand the application range of polymer-modified emulsified asphalt, WPU-SBR-modified emulsified asphalt with different WPU contents was prepared and tested. The results showed that the addition of WPU improved the high-temperature stability of modified emulsified asphalt, but excessive content of WPU deteriorated the low-temperature performance. The optimum improvement effect was achieved when the WPU content was 9%.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Polymer Science
Chunli Wu, Xiaoshu Tan, Liding Li, Chunyu Liang, Yongchao Zhao, Hanjun Li, Fuen Wang, Long Zhang
Summary: With the increase in highway traffic volume, the production of waste tires has become a serious problem for the environment. This study investigates the use of ground tire rubber (GTR) and styrene-butadiene-styrene (SBS) compound-modified asphalt to address this issue. The results show that adding GTR significantly improves the performance of asphalt in terms of rutting resistance, thermo-sensitive performance, shear resistance capability, stress sensitivity, and creep recovery.
Article
Materials Science, Composites
Amir A. Abdelsalam, Sherif Araby, Salwa H. El-Sabbagh, Ahmed Abdelmoneim, Mohsen A. Hassan
Summary: This study investigated the effect of carbon black filler loading on the mechanical and rheological properties of natural rubber/styrene-butadiene rubber/nitrile butadiene rubber ternary rubber nanocomposites. The results showed that with increasing filler loading, some mechanical properties were improved, with the sample loaded with 45-phr CB (S-4) showing the highest tensile strength.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2021)
Article
Construction & Building Technology
M. Lagos-Varas, D. Movilla-Quesada, A. C. Raposeiras, P. Monsalve-Carcamo, D. Castro-Fresno
Summary: The development of polymer-modified asphalt (PMA) has been widely used for its potential performance and cost improvements. Sasobit wax has been proposed as an alternative to reduce costs in Crumb-Rubber (CR) and Styrene-Butadiene-Styrene Copolymer (SBS) binders. However, there is limited research on the rheological behavior of CR-SBS-Sasobit triple-modified samples. This study examines the properties of binders with triple modification of CR-SBS-Sasobit at different dosages. The results demonstrate that the triple modification with CR-SBS-Sasobit achieved higher elasticity, reduced deformation, and increased fatigue life, making it a viable option for enhancing the strength of bitumen.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Gang Xu, Peipei Kong, Yunhong Yu, Jingyao Yang, Minghui Zhu, Xianhua Chen
Summary: This work introduces an environmentally friendly method of dealing with crumb rubber in asphalt pavement and explores the excellent rheological performance of reclaimed rubber modified asphalt (RRMA). The results show that the Mooney viscosity of reclaimed rubber decreases with increasing reclamation temperature. Furthermore, the molecular weight of the sol fraction is reduced, leading to micro-nano sized gel particles in RRMA and enhanced rubber-asphalt interaction. The dissolution and dispersion of rubber particles are improved in RRMA, resulting in improved storage stability and reduced viscosity. The rheological properties of RRMA at full-service temperature are also improved with increasing reclaiming degrees of rubber. Overall, RRMA shows great potential in tire applications due to its excellent road performance and environmental friendliness.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Composites
Zhongying Wang, Huan Wang, Xiaomei Shen, Qingfu Wang, Zhiqian Wang, Fanghui Wang, Hong Zhu
Summary: By incorporating C3N4/SiO2 nanohybrids into SSBR/BR, the mechanical properties and wear resistance of rubber composites were significantly improved. The wet skid resistance was enhanced and rolling resistance was reduced compared to SiO2-SSBR/BR.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
Mateusz Imiela, Dariusz M. Bielinski, Magdalena Lipinska, Przemyslaw Rybinski
Summary: New trends in the circular economy and sustainability are leading to the search for alternative flame retardants, such as ceramizable composites. However, weak rheological properties pose a challenge for these composites. This study aimed to improve the viscoelastic properties of ceramizable composites by using styrene-butadiene rubber as a polymer matrix and mica as a mineral filler. The results showed differences between vulcanization methods (with sulfur or peroxide) for the SBR-based ceramizable composites in terms of mechanical properties, dynamic viscosity, and flammability.
Article
Construction & Building Technology
Baha Vural Kok, Nisanur Gurcay Ozdemir
Summary: This study investigated the effects of combining CR and PU for bitumen modification. The use of polymeric MDI and palm-oil-based polyol was successful in PU modification. The CR + PU-modified binder showed better performance in plastic deformation resistance and low-temperature behavior compared to SBS modification. The chemical reaction between PU and CR improved storage stability and reduced aging effects.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Composites
Amirreza Zabihi, Mohammad Fasihi, Sajad Rasouli, Rahida Wati Sharudin
Summary: The effects of silicon carbide (SiC) as a thermal conductive filler on styrene-butadiene-rubber/butadiene rubber (SBR/BR) were investigated. The addition of SiC improved the mechanical properties, physical properties, and curing kinetics of the composite. However, particle agglomeration of SiC after a certain content reduced its performance in the composite.
POLYMER COMPOSITES
(2023)
Article
Engineering, Civil
Yunus Erkus, Baha Vural Kok, Mehmet Yilmaz
Summary: The use of natural asphalt as an alternative additive to expensive styrene-butadiene-styrene (SBS) in modifying bituminous mixtures has been found to significantly improve the mechanical properties of these mixtures, particularly when natural asphalt is added in amounts of 35% or more.
Article
Construction & Building Technology
Ozge Erdogan Yamac, Mehmet Yilmaz, Erkut Yalcin, Baha Vural Kok, Jose Norambuena-Contreras, Alvaro Garcia
Summary: Capsules containing waste oils were prepared for asphalt self-healing purposes. The optimum capsule content was found to be 100 ml water, 500 ml waste oil, and 17.5 g sodium alginate. Adding capsules significantly improved the self-healing levels of asphalt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Civil
Mustafa Akpolat, Baha Vural Kok, Ercan Aydogmus
Summary: This study investigates the effect of using Fume Silica (Aerosol 300) alone and together with crumb rubber (CR) in bitumen modification on the traditional and rheological properties of the binder and compares it to the SBS modified binder. The results indicate that using 1.5% aerosol and 6% crumb rubber in bitumen modification improves the softening point, consistency, complex modulus, and durability of the binder, while also enhancing its flexibility at low temperatures.
PERIODICA POLYTECHNICA-CIVIL ENGINEERING
(2022)
Article
Construction & Building Technology
Erkut Yalcin, Ahmet Munir Ozdemir, B. Vural Kok, Mehmet Yilmaz, Bahadir Yilmaz
Summary: This study utilized waste face masks as a modifier in bitumen binder to address the environmental pollution caused by disposable masks. The addition of waste masks and styrene-butadienestyrene (SBS) increased the softening point and viscosity of the binders, while reducing the penetration value. Waste mask modifications exhibited better elastic properties at high temperatures. Binders containing more than 2% waste mask showed better performance characteristics than binders containing 3% SBS in terms of physical and rheological properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Aytug Kumandas, Erman Cavdar, Seref Oruc, Erhan Burak Pancar, Baha Vural Kok
Summary: Reactive Ethylene Terpolymers (RET), a popular additive in recent years, significantly enhance the performance of bitumen. However, the use of RET modified bitumen (RETMB) results in decreased workability of mixtures and increased energy requirement and CO2 emissions. This study investigates the combined use of RET and Waste cooking oils (WCO) to improve workability, fatigue resistance, and low-temperature cracking of modified binders. The findings suggest that the RET + WCO composite modified bitumen is suitable for asphalt pavement constructions, particularly in cold climates, and can reduce CO2 emissions during pavement construction through an environmentally friendly approach.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Baha Vural Kok, Beyza Furtana Yalcin, Mehmet Yilmaz, Erkut Yalcin
Summary: Combining SIS polymer with CR modification can enhance the high-temperature performance and reduce the low-temperature stiffness of bitumen. This combined modification method shows satisfactory performance under low-and high-temperature conditions and provides a more cost-effective solution compared to using SIS polymer alone.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Baha Vural Kok, Bekir Irhan, Mehmet Yilmaz, Erkut Yalcin
Summary: The use of waste materials in bitumen modification has become crucial in protecting natural resources, reducing environmental pollution, and increasing efficiency. Photopolymer (PhP) obtained from waste solid sheet plates was found to be a suitable material for bitumen modification, offering superior properties compared to pure binder and styrene-butadienestyrene (SBS) modification. PhP modification showed high softening point, viscosity, complex modulus, and low phase angle values, making it capable of handling heavy traffic conditions and exhibiting good performance at low temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yunus Erkus, Baha Vural Kok
Summary: The applicability of calcium carbonate and polypropylene composite (PPC) in bitumen modification was investigated in this study. Physical and rheological experiments were conducted to evaluate the performance of the modified binders. The addition of PPC resulted in decreased penetration and increased softening point and viscosity. The binder modified with 21% PPC showed superior rutting resistance compared to bitumen modified with 3% SBS. The 21% PPC modification was found to be the most dominant in terms of the polymeric phase and flexibility.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Yunus Erkus, Baha Vural Kok, Mehmet Yilmaz
Summary: In this study, the usability of calcium carbonate-polyethylene compound (PEC) as an alternative to styrene-butadiene-styrene (SBS) was investigated. The results showed that PEC modification of bitumen had similar or better performance and cost compared to SBS modification.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Energy & Fuels
Ahmet Munir Ozdemir, Erkut Yalcin, Mehmet Yilmaz, Baha Vural Kok, Ertugrul Cambay
Summary: The effect of capsules on the mechanical properties of asphalt mixtures was investigated by adding capsules containing different ratios of waste vegetable oil. Creep tests were conducted with and without capsules, and finite element method was used to simulate the capsules. The Response Surface Method analysis showed that the addition of capsules increased the permanent deformation rate of asphalt mixtures.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Baha Vural Kok, Zulfu Yetkin, Erkut Yalcin
Summary: Large quantities of Solid Sheet Photopolymer plates (SSP) are used and wasted by the flexographic printing industry worldwide. The study explores the effects of using waste SSP in combination with Styrene-butadiene-styrene (SBS) copolymer for bitumen modification. Tests and analysis were conducted, showing that the combination of 7% SSP and 2% SBS provided improved performance compared to the single 5% SBS modification.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2023)
Article
Construction & Building Technology
Esma Bakir, Erkut Yalcin, Mehmet Yilmaz, Baha Vural Kok, Alvaro Garcia Hernandez
Summary: Capsules containing waste mineral oil can delay the maintenance of asphalt mixtures by preventing crack propagation. The experimental study showed that an increase in capsule amount led to higher oil release and recovery rate, but decreased mechanical performance. It was also found that longer curing time and higher temperature improved the recovery rate. The effects of capsule content and load characteristics on the healing index were defined using response surface method (RSM).
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Yunus Erkus, Baha Vural Kok, Mehmet Yilmaz
Summary: This study investigated the temperature sensitivity and storage stability of polyethylene and calcium carbonate compound (PEC) modified bitumen. PEC was used at different rates and compared with a 4% styrene-butadiene-styrene (SBS) modified binder. The results showed that the binder containing 15% PEC had low temperature sensitivity, but there was phase separation in PEC modified binders with an additive content of more than 6% after storage. Considering performance and cost, the binder containing 6% PEC had similar performance to the 4% SBS modification in terms of temperature sensitivity, storage stability, and economy.
PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
(2022)
Article
Environmental Sciences
Baha Vural Kok, Beyza Furtana Yalcin, Mehmet Yilmaz, Erkut Yalcin
Summary: The use of crumb rubber (CR) obtained from waste vehicle tires has gained attention from researchers for its low cost and environmentally friendly characteristic. In this study, the effects of combining styrene-isoprene-styrene (SIS) with CR on the rutting and aging properties of binders were evaluated. It was found that the combined use of 2% SIS and 7% CR provides an economical and superior performance compared to individual SIS or CR modifications.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2022)
Article
Environmental Sciences
Baha Vural Kok, Yunus Erkus, Mehmet Yilmaz
Summary: This study investigated the effects of using a combination of waste vehicle tire rubber powder, SBS polymer, and Sasobit warm mixture additive in asphalt mixtures. The results showed that these additives improved the stability, strength, and fatigue life of the mixtures, and the combination provided better performance at a lower cost compared to single additives.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2022)
