“…Based on this result, it can be concluded that incorporating GO in the asphalt binder can improve its fatigue resistance. A similar finding has been reported by Singh et al [ 24 ].…”
Section: Resultssupporting
confidence: 92%
“…Rutting is one of the most common types of failures in asphalt pavements, which is caused by repeated deformation due to high traffic loads and adverse weather conditions. Previous research found that using GO as an asphalt binder modifier improved the deformation resistance measured by the Superpave rutting parameter (G*/sinδ) and MSCR approach [ 18 , 23 , 24 , 25 ]. Several studies have shown that for modified binders, the G*/sinδ parameter is not very effective in evaluating the rutting behavior [ 26 , 27 ].…”
This study has investigated the impact of graphene oxide (GO) in enhancing the performance properties of an asphalt binder. The control asphalt binder (60/70 PEN) was blended with GO in contents of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%. The permanent deformation behavior of the modified asphalt binders was evaluated based on the zero shear viscosity (ZSV) parameter through a steady shear test approach. Superpave fatigue test and the linear amplitude sweep (LAS) method were used to evaluate the fatigue behavior of the binders. A bending beam rheometer (BBR) test was conducted to evaluate the low-temperature cracking behavior. Furthermore, the storage stability of the binders was investigated using a separation test. The results of the ZSV test showed that GO considerably enhanced the steady shear viscosity and ZSV value, showing a significant contribution of the GO to the deformation resistance; moreover, GO modification changed the asphalt binder’s behavior from Newtonian to shear-thinning flow. A notable improvement in fatigue life was observed with the addition of GO to the binder based on the LAS test results and Superpave fatigue parameter. The BBR test results revealed that compared to the control asphalt, the GO-modified binders showed lower creep stiffness (S) and higher creep rate (m-value), indicating increased cracking resistance at low temperatures. Finally, the GO-modified asphalt binders exhibited good storage stability under high temperatures.
“…Based on this result, it can be concluded that incorporating GO in the asphalt binder can improve its fatigue resistance. A similar finding has been reported by Singh et al [ 24 ].…”
Section: Resultssupporting
confidence: 92%
“…Rutting is one of the most common types of failures in asphalt pavements, which is caused by repeated deformation due to high traffic loads and adverse weather conditions. Previous research found that using GO as an asphalt binder modifier improved the deformation resistance measured by the Superpave rutting parameter (G*/sinδ) and MSCR approach [ 18 , 23 , 24 , 25 ]. Several studies have shown that for modified binders, the G*/sinδ parameter is not very effective in evaluating the rutting behavior [ 26 , 27 ].…”
This study has investigated the impact of graphene oxide (GO) in enhancing the performance properties of an asphalt binder. The control asphalt binder (60/70 PEN) was blended with GO in contents of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%. The permanent deformation behavior of the modified asphalt binders was evaluated based on the zero shear viscosity (ZSV) parameter through a steady shear test approach. Superpave fatigue test and the linear amplitude sweep (LAS) method were used to evaluate the fatigue behavior of the binders. A bending beam rheometer (BBR) test was conducted to evaluate the low-temperature cracking behavior. Furthermore, the storage stability of the binders was investigated using a separation test. The results of the ZSV test showed that GO considerably enhanced the steady shear viscosity and ZSV value, showing a significant contribution of the GO to the deformation resistance; moreover, GO modification changed the asphalt binder’s behavior from Newtonian to shear-thinning flow. A notable improvement in fatigue life was observed with the addition of GO to the binder based on the LAS test results and Superpave fatigue parameter. The BBR test results revealed that compared to the control asphalt, the GO-modified binders showed lower creep stiffness (S) and higher creep rate (m-value), indicating increased cracking resistance at low temperatures. Finally, the GO-modified asphalt binders exhibited good storage stability under high temperatures.
“…Các nghiên cứu của Adnan và cộng sự [11], Zhu và Zhang [12], Zheng và cộng sự [13] chỉ ra rằng, GO cải thiện tốt các đặc tính cơ lý của nhựa đường như độ kim lún, điểm hóa mềm, độ dẻo, và độ nhớt. Một số đặc tính khác của nhựa đường khi bổ sung GO cũng được cải thiện đáng kể như hiệu suất làm việc ở nhiệt độ cao [14], [15], đặc tính làm việc ở nhiệt độ thấp [16], tăng cường khả năng chống lão hóa của nhựa đường [17]. Trong số các chỉ tiêu đánh giá của nhựa đường, độ kim lún và điểm hóa mềm là hai chỉ tiêu quan trọng nhất để phân loại mác nhựa đường theo độ kim lún [18], nên việc xác định 2 chỉ tiêu này của nhựa đường biến tính GO là rất cần thiết.…”
Độ kim lún và điểm hóa mềm là hai chỉ tiêu quan trọng nhất để phân loại mác nhựa đường theo độ kim lún truyền thống. Việc xác định 2 chỉ tiêu này của nhựa đường biến tính graphen oxit (GO) bằng phương pháp thực nghiệm gặp những khó khăn nhất định do giá thành GO cao, thời gian thí nghiệm kéo dài. Mục đích của nghiên cứu này là sử dụng hệ thống suy luận thần kinh mờ thích ứng (ANFIS) kết hợp thuật toán giải thuật di truyền (GA) để dự đoán độ kim lún và điểm hóa mềm của nhựa đường biến tính GO. Hai bộ dữ liệu bao gồm bộ dữ liệu độ kim lún (122 mẫu), bộ dữ liệu điểm hóa mềm (130 mẫu) được thu thập từ 12 nghiên cứu khác nhau với 9 tham số đầu vào, được dùng để xây dựng và kiểm chứng công cụ mô phỏng số. Ngoài ra, nghiên cứu sử dụng kỹ thuật xác thực chéo 10 lần cùng với các tiêu chí thống kê là hệ số tương quan (R) và căn của sai số toàn phương trung bình (RMSE) để đánh giá hiệu suất của các mô hình. Kết quả nghiên cứu cho thấy, đối với bộ dữ liệu độ kim lún, mô hình ANFIS-GA có RMSE = 6.045 (0.1 mm), R = 0.949, mô hình ANFIS có RMSE = 8.492 (0.1 mm), R = 0.893. Đối với bộ dữ liệu hóa mềm, mô hình ANFIS-GA có RMSE = 1.848 (oC), R = 0.991, mô hình ANFIS có RMSE = 13.863 (oC), R = 0.818. Điều này cho thấy, cả hai mô hình ANFIS-GA và ANFIS đều đạt hiệu suất dự đoán tốt và độ chính xác cao. Với RMSE nhỏ hơn và R cao hơn ở cả 2 bộ dữ liệu, mô hình ANFIS-GA được đánh giá là tốt hơn ANFIS. Mô hình này hoàn toàn có thể được áp dụng để giúp các kỹ sư vật liệu tiết kiệm thời gian và chi phí thí nghiệm.
“…The incorporation of GO into AB, producing a synergistic interaction between the two materials, can lead to significant improvements in their viscoelastic properties, resistance to rutting, 29,30 fatigue, 31,32 and aging. [33][34][35] Specifically, Li et al 29 demonstrated that the addition of GO enhances the anti-rutting performance of 80/100 penetration grade (PG) and styrene-butadiene-styrene (SBS) modified ABs. Their findings also revealed that GO has a more pronounced influence on the viscoelastic properties of SBS-modified ABs, thereby emphasizing its significant impact on enhancing the shear modulus (G*).…”
Section: Introductionmentioning
confidence: 99%
“…Firstly, current studies on GO-modified ABs often employ high agitation parameters (speed, time, temperature) during the modification process; however, they lack specific assessments of the effect of aging on the production of GO-modified AB. [33][34][35] Aging is a crucial factor influencing the long-term performance of ABs, and its impact on GO-modified binders remains inadequately explored. Secondly, there is a notable absence of temperature-viscosity curves for GO-modified ABs, established according to the instructions of ASTM 2493.…”
The effects of graphene oxide (GO) on the rheological properties, performance grade (PG), and aging resistance of asphalt binders (AB) were systematically studied in this work. A series of asphalt samples modified with varying GO concentrations (0.5%, 1%, 1.5%, 2%, and 3%) were prepared and subjected to comprehensive characterization and performance tests, including penetration, softening point, elongation, viscosity, dynamic shear rheometry, and aging evaluation using the Rolling Thin Film Oven Test. The results revealed that incorporating GO into the asphalt matrix led to enhanced stiffness and elasticity, with increased the complex modulus and reduced the phase angle. Furthermore, the modified AB's high-temperature PG improved with increasing GO content, with the 2% and 3% GO-modified binders exhibiting properties comparable to those of PG70. Specifically, the investigation revealed that GO modification minimized the impacts of the aging process on the properties of AB, perhaps enhancing their long-term performance and durability. This research highlights the potential benefits of utilizing GO as an effective asphalt modifier, contributing to the development of more resilient and sustainable pavement systems. The findings provide valuable insights for researchers and engineers aiming to optimize the use of GO in asphalt modification to achieve enhanced performance and aging resistance in various climatic and service conditions.
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