Recently, People's Network reprinted the news from Science and Technology Daily that China's marine engineering technology innovation is fruitful . The news first reported that on July 15, the "Central Enterprise Marine Engineering Technology Innovation Consortium" led by China Communications Construction Group Co., Ltd. was established in Beijing. After that, the latest research and fruitful achievements in deep-sea exploration in China are introduced. The second achievement is to build a floating city on the sea, and the third is to study a deep-sea bridge with a larger span. Ou Jinping, academician of
the Chinese Academy of Engineering, revealed that the marine civil engineering team set up by Harbin University of Technology (Shenzhen) has made some floating offshore platform structures. The team is exploring and testing engineering problems such as large load-bearing floating body modules at sea, how to fix the floating body to the seabed, and how to resist corrosion of sea sand concrete. Zhang Xigang, academician of
the Chinese Academy of Engineering, believes that "as a throat project to realize intercontinental and land-island interconnection, the construction of deep-sea bridges is of great significance, but it also faces more severe construction conditions.". To break through the larger bridge span, the requirements for safe, long and healthy operation and maintenance are higher. All these will become the technical challenges that deep-sea bridges need to face in the future.
How to resist corrosion and how to achieve safe, long and healthy operation and maintenance are the problems and challenges that marine civil engineering must solve.
Three years ago, in the early morning of June 24, 2021, an apartment building in the town of Surfside, Miami-Dade County, Florida, USA, partially collapsed, causing heavy casualties and causing widespread concern around the world. According to reports, the accident building was a 12-storey seaside apartment built in 1981, with a total of 136 housing units, 55 of which collapsed in an avalanche in the accident. Immediately
after the accident, Wang Yanmou, an authority in the cement industry, and Qi Dongyou, a key laboratory of pyrite aluminate cement, published an article entitled " Ferrite aluminate cement should be used in the infrastructure construction of coastal high-rise buildings-Enlightenment from the collapse of buildings in Miami, USA". It is pointed out that the corrosion of building structures in marine environment is a worldwide problem. The material solutions to improve the safety of coastal high-rise buildings are proposed.
It is suggested that aluminoferrite cement with excellent seawater corrosion resistance should be widely used in new construction and renovation projects of coastal buildings to greatly improve the seawater corrosion resistance of buildings, reduce the risk of seawater corrosion damage to buildings and reduce maintenance costs.
1. Use aluminoferrite cement instead of Portland cement to produce high-strength prestressed pipe piles to solve the problem of bearing capacity decline or even damage caused by seawater corrosion of coastal building pile foundations.
2. Use aluminoferrite cement instead of Portland cement to construct important load-bearing structures such as beams and columns in coastal buildings, and solve the problem that the bearing capacity of key load-bearing structures such as beams and columns in coastal buildings is reduced or even damaged due to seawater corrosion.
3. Carry out the application demonstration and related research work of aluminoferrite cement in coastal construction projects, and establish a sound system of application technical standards and specifications.
China Cement Network has just published an article entitled " On the Innovation of Cement Varieties" written by Wang Yanmou and the team of the Key Laboratory of Sulfur-Ferroaluminate Cement. Compared with Portland cement, sulphoaluminate cement and ferroaluminate cement invented in China belong to different mineral systems, which is a revolutionary breakthrough in cement technology. This breakthrough makes ferroaluminate cement have the performance advantages of seawater, saline-alkali non-corrosive and negative temperature construction, as well as outstanding energy-saving and low-carbon characteristics.
It has been more than 40 years since the accumulation of engineering case testing data and research results, which fully show that aluminoferrite cement has the special performance of non-corrosive in seawater and saline-alkali. What is more exciting and amazing is that with the passage of time, the intensity does not decrease but increases. In the battle against seawater corrosion. It can be said that he is not only good at fighting, but also brave in Vietnam! It can be seen
from the above that the problem of corrosion resistance to be solved in marine civil engineering has been solved by aluminoferrite cement to a large extent in China, and many application examples can prove its excellent corrosion resistance. According to
the report, the Central Enterprise Marine Engineering Technology Innovation Consortium is guided by the Science and Technology Innovation Bureau of the State-owned Assets Supervision and Administration Commission of the State Council, with 10 industry-leading central enterprises of marine engineering as the core, 24 universities and research institutes with the advantages of marine disciplines such as Tsinghua University, 12 large enterprises, institutions and leading private enterprises, and the Central Enterprise. It is formed by concentrating superior forces.
It should be impossible to achieve the construction of marine engineering without the strong support of corrosion-resistant materials. Unfortunately, it is understood that among the members of the "Marine Engineering Technology Innovation Consortium", there is no place for the team of the Key Laboratory of Sulphate Aluminate Cement of China Building Materials Industry Technical Supervision Research Center. To solve the problem of corrosion resistance in marine civil engineering, it can be implemented smoothly without the support of building materials?
