A Study on High and Low Temperature Rheological Properties and Oil Corrosion Resistance of Epoxy Resin/SBS Composite Modified Bitumen

Abstract

In order to investigate the high and low temperature rheological properties and fuel corrosion resistance of epoxy resin on SBS modified asphalt, epoxy resin/SBS composite modified asphalt (ER/SBS) was prepared by high-speed shear. Moreover, composite modified bitumen with different proportions were designed based on the uniform design method and the basic performance index test was performed. The optimal composite mixing ratio of the ER and SBS modifier in composite modified asphalt (2.3% and 3.8%, respectively) was determined. Temperature scanning and a multiple stress creep test (MSCR) on ER/SBS composite modified asphalt with different ER content before and after oil corrosion was carried out using a dynamic shear rheometer (DSR). In addition, the high temperature rheological properties of different ER contents and composite modified asphalt after oil corrosion were evaluated by combing DSR measurements with the test data. The creep stiffness (S) and creep rate (m) indexes were obtained by a bending rheometer (BBR), and the effect of ER on the low-temperature rheological properties of SBS modified bitumen was investigated. The influence of the modifier incorporation on the micromorphology of asphalt and the change of micromorphology of asphalt after oil corrosion were analyzed by fluorescence microscopy. The test results show that the incorporation of 2.3% ER and 3.8% SBS can effectively improve the high temperature performance of SBS modified asphalt under the premise of cost saving. Moreover, the composite modified asphalt doped with ER can effectively improve the resistance of SBS modified asphalt to fuel corrosion at high temperatures, and the greatest improvement in the oil corrosion resistance of composite modified asphalt is observed at the ER content of 2.3%.

Enhancing Railway Track Stabilization with Epoxy Resin and Crumb Rubber Powder-Modified Cement Asphalt Mortar

“…Their research highlighted the initial strength reduction associated with epoxy resin-modified mixtures, which was attributed to delayed hydration kinetics. However, these differences in strength are relatively small and are compensated for in the curing conditions, aligning with the findings of Xue et al [18]. Le et al also reported a slight strength reduction at early ages for CRP-modified cementitious materials but observed that long-term strength was unaffected [10].…”

“…Recently, epoxy resin and crumb rubber powder (CRP) have gained significant attention as valuable additives in asphalt mixtures due to their unique properties and potential benefits [14][15][16]. Epoxy resin, known for its adhesive and cohesive characteristics, has been employed to enhance the bonding between asphalt and aggregate particles, resulting in improved asphalt mix durability [17][18][19]. Similarly, CRP, a recycled material derived from discarded tires, offers benefits such as improved elasticity, reduced rutting, and enhanced resistance to temperature-related distresses when incorporated into asphalt mixtures [20,21].…”

Experimental Study on the Physicochemical Properties of Asphalt Modified by Different Anti-Stripping Agents and Their Moisture Susceptibility with Aggregates

“…The tests were carried out at −6, −12, and −18 • C. At low temperatures, the asphalt deformation resistance is measured by the S-value, and the creep relaxation capacity is characterized by the m-value. The S-and m-value of the asphalt are calculated in terms of the corresponding deformation values at 60 s [37]. For the reliability of the experimental results, five parallel tests were conducted for each sample.…”

Simultaneously enhancing tribological and mechanical properties of epoxy composites using basalt fiber/reduced graphene oxide/paraffin wax

“…Epoxy resin (EP) has been widely used in various fields such as structural adhesives, coatings, functional composites, and machinery due to its excellent mechanical properties, admirable molding processability, good chemical resistance, superior thermal stability, and so on 1–3 . However, high friction coefficient, poor wear resistance, high brittleness, and wretched crack propagation resistance of the cured EP make it difficult to meet the critical engineering requirements and thus the extensive applications of EP are greatly restricted 4,5 . To overcome these issues, great efforts have been made to prepare epoxy composites reinforced with various fillers, including bamboo fiber, 5 basalt fiber, 6 and graphene 7 for advanced mechanical properties, and graphene, 7 MoS 2 , 8 oil‐containing activated carbon particles, 9 and oil‐containing microcapsules 10 for advanced tribological property.…”