## 1 Introduction  
There are copious amounts of harmful salts in western saline soil, including sulphates, chlorides, and carbonates [1, 2]. These salts adversely affect ordinary concrete [3, 4]. For example, concrete can gradually spall and crack under sulphate corrosion, and the reinforcement of concrete undergoes accelerated corrosion under the action of chloride salt, resulting in corrosion expansion damage [5, 6, 7]. Magnesium oxychloride cement concrete (MOCC) without modification offers good performance in terms of salt brine corrosion resistance, and it has shown good working performance in this area [8, 9, 10, 11, 12]. However, corrosion of steel bars limits its application [13, 14, 15, 16, 17]. Aiming to solve this problem, [PERSON] [10, 11] adopted a method using zinc-rich epoxy resin to prevent corrosion of steel bars. The zinc-rich coatings need to sacrifice themselves to protect the steel bars, and it is also necessary to study the coatings that primarily serve as insulation. In the field of civil engineering, asphalt, with its excellent waterproof properties and anticorrosion performance, is widely used in roofing, on the ground, in underground waterproof structures, for wood treatment, and as an anticorrosive in steel [18, 19]. For example, [PERSON] [20] used butyl rubber with asphalt to treat pipeline joints when laying pipelines in the sea. After soaking the pipeline at 65 \({}^{\circ}\)C for 28 days, there was no corrosion at the joints. [PERSON] [21] adopted a heavy epoxy anticorrosive coating over a trust primer/IPN topcat for anticorrosion treatment of an oil field pipeline and used electronic impact spectroscopy and scanning electron microscopy (SEM) to study the causes of pipeline corrosion. The treatment achieved excellent performance for preventing pipeline corrosion. [PERSON] [22] used an SBS asphalt coating to protect reinforcements and then performed electrochemical tests on magnesium-oxychloride-coated reinforced concrete, analysed the polarisation curve in the protection process, and concluded that SBS asphalt can protect reinforcement well. In the application to asphalt roads, [PERSON] [23] used epoxy asphalt to improve the durability of asphalt mixtures. Tests have shown that increasing the epoxy modification level in asphalt leads to materials with higher rigidity and strength, thereby increasing fatigue resistance. In addition, asphalt bonding materials can significantly improve the bonding strength between asphalt pavement layers. [PERSON] [24] used asphalt modified by silane coupling agent to improve the robustness of the freeze-thaw cycle resistance of the adhesive layer on the surface of seasonally frozen regions of steel bridges through visibility. Direct tensile and bending beam rheometer tests were used to evaluate the bonding ability of epoxy asphalt and epoxy asphalt rubber. It was concluded that the low-temperature pull-off strength and shear strength of epoxy asphalt rubber can be improved after modification with surface-treated rubber particles. With about 1.2 times the layer, the average interfacial fracture energy was about twice as high as that of the epoxy asphalt bonding layer. [PERSON] and [PERSON] [25] studied the changes in moisture sensitivity of asphalt after ageing. The moisture resistance of short-term aged asphalt was better, and the moisture resistance of long-term aged asphalt significantly decreased. [PERSON] [26] prepared a new composite material (OMMT/PAR) that can improve the interfacial adhesion between aggregates and asphalt. [PERSON] [27] has studied the adhesion between different asphalt binders and aggregates, and the results showed that composite anti-stripping agents can effectively improve the water stability and adhesion of asphalt mixtures. There have been few studies of the use of asphalt coated steel bars in concrete, and currently the main research is on the anti-corrosion effect of asphalt coating on steel bars.