Epoxy resin-coated steel bars can effectively extend the service life of structures, and are gradually adopted in my country. The use of epoxy resin-coated steel bars will increase the cost of raw materials, construction costs, and anchoring costs. Although the one-time investment increases, the economic and social benefits obtained are very huge.

Epoxy resin-coated steel bars improve the durability of engineering structures, which have always been the main topics that our engineering community has paid close attention to and constantly explored and solved. Due to the inevitable occurrence of some gaps or voids in reinforced concrete, the internal steel bars will corrode under the erosion of salt water and other corrosive media, especially in coastal port docks, cross-sea bridges and airports and airports that need to be sprayed with salt water to remove ice and snow. Highways and other facilities are more serious. The scale formed by the corrosion on the surface of the steel bar expands tens of times, which leads to the cracking of the concrete, the protective layer is peeled off, and the steel bar is more exposed to the corrosive medium to accelerate the steel bar corrosion rate. In recent years, due to the corrosion of steel bars, buildings have been destroyed in advance before reaching the design life, and even catastrophic consequences have occurred from time to time. Therefore, the protection of steel bars has received widespread attention and attention in my country's engineering community. In 1973, the Pennsylvania Bridge in the United States first used epoxy resin coated steel bar technology to deal with the problem of steel bar corrosion. It has been more than 30 years.

Epoxy resin-coated steel bars can very effectively extend the service life of structures. At present, epoxy resin-coated steel bars have been widely adopted in countries and regions such as the United States, Japan, Europe, and the Middle East, and are specified in harsh environments. The project must use epoxy resin coated steel bars. my country has also adopted this technology for the first time in Beijing after a pilot project. Therefore, the use of epoxy resin-coated steel bar technology as a method of anti-corrosion of steel bars will also be gradually adopted in my country.

The epoxy resin-coated steel bar will definitely increase the investment cost of the project. Here, the quantitative analysis of the increase in cost will provide a basis for the investment decision.