In 2018, the national concrete production reached 2.35 billion cubic meters, and in 2019, it reached 2.4 billion cubic meters, with a year-on-year increase of about 3.46%. The consumption of concrete in China has been ranked in the world for more than 30 years.

By 2019, China’s total highway mileage has reached 4.8465 million kilometers, and highway has reached 142600 kilometers, ranking the world * *. By the end of 2019, China’s railway operating mileage has reached more than 139000 km, including 35000 km of high-speed railway.

By the end of 2018, there were 851500 highway bridges, with a total length of 55685900 meters. 15117 railway tunnels have been put into operation, with a total length of 16331km; by the end of 2019, the total operating mileage of urban rail transit in China will reach 6600km.

By the end of 2017, 8591 sewage treatment plants had been built in China; by the end of 2018, there were 23513 domestic chemical industry enterprises

Behind these grand data are the volume of concrete structure engineering. However, there will be various problems in the long-term use of concrete materials, especially the three “cancers” of cracking, leakage and deterioration, which have become the major hidden dangers affecting its durability and service life.

For these huge multi-disciplinary concrete (water conservancy, transportation, industrial and civil construction, municipal, military, energy, etc.), some or more requirements, such as concrete crack resistance, repair, waterproof and impermeability, acid and corrosion resistance, salt resistance, carbonation resistance, freeze-thaw resistance, reinforcement, etc., have great market prospects, and these demands may appear at the same time.

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