Li Ruoyu's speech was very unique, which made the 15 R&D personnel find it interesting and philosophical. Huhai Concrete Technology R&D Center is a provincial-level technology R&D center, which can be regarded as the first provincial-level concrete technology R&D center in China. And Li Ruoyu, the director, is so young that he has become a role model for all technical research and development personnel, even technical experts like Xie Zili, who have worked in the Huhai Institute of Building Research for several years, have deep admiration for Li Ruoyu's technical level, as for the rookies recruited from the university, they looked at Li Ruoyu with admiration.

At the unveiling ceremony of the Huhai Concrete R&D Center, the appearance of the director of the Huhai Construction Committee made these R&D personnel feel that the prospects of the R&D center are very beautiful and are particularly valued. And Li Ruoyu, the director, was also elected as the president of the Huhai Ready Mixed Concrete Association, which made Li Ruoyu's aura bigger and bigger.

However, now is the time to come up with the real thing, and the task of the concrete R&D center is also very heavy, so Li Ruoyu of course has to arrange the tasks of the R&D center.

Li Ruoyu looked at the crowd: "Everyone, some of you are senior experts in the industry, and some are graduates who have just stepped out of the university campus, no matter how you have lived in the past, when you arrive at our R&D center, you must work with the spirit of innovation, and give full play to the advantages of the team, we are a whole, in order to complete the R&D task, we must take collective honor as the goal and devote ourselves to R&D work." Our main task this year is to conduct research on high-performance concrete, as well as high-performance polycarboxylate superplasticizers, these two research and development projects are the top priority. ”

Li Ruoyu's plan is to develop better high-performance concrete than foreign countries, and promote it, so that the quality of Chinese architecture can be greatly improved. Of course, now foreign countries have only just put forward the concept of high-performance concrete, so at this time to seize the opportunity, perhaps can make China's high-performance concrete can also shine in the world's concrete industry! This is a good thing for the benefit of the country and the people, although Li Ruoyu himself will not get much benefit, at best, let his reputation in the concrete industry have improved. However, the entire concrete industry and even the entire construction industry have received more benefits. Although Li Ruoyu is also a selfish person, since God has given him the opportunity to return to this era and start from scratch, he cannot live up to God's kindness. Life in the world is also the word fame and fortune. With the advantage of understanding the development trend of this world in the past 20 years, Li Ruoyu does not believe that he will not make enough money in this future life.

Although traditional concrete has a history of nearly 200 years and has undergone several big leaps, today it is facing unprecedented challenges. The number of extra-long, extra-high, and oversized concrete structures, as well as heavy concrete structures used in harsh environments, is increasing. These concrete projects are difficult to build, the use environment is harsh, and the maintenance is difficult, so the concrete is required not only to have good construction performance, but also to have good durability and long service life. ”

"Since the 70s of the 20th century, many industrially developed countries are facing some reinforced concrete structures, especially bridges built in the early years and other infrastructure aging problems, which need to invest heavily in maintenance or renewal. A 1987 government report by the U.S. National Bureau of Materials Consulting pointed out that of the 575,000 bridges in the United States at that time, about 253,000 were in a state of failure, some of which were less than 20 years old, and the number of damaged bridges was increasing by 35,000 each year. In its 1991 report to the United States Congress, the State of the Nation's Roads and Bridges stated that $91 billion would be required to repair or replace existing defective bridges, which would increase to $131 billion if the repair process was delayed. The total number of existing concrete projects in the United States is about $6 trillion, and the annual cost of repairs is as high as $30 billion. Let's think about what kind of concept this is? What is the annual GDP of our country? Although China does not have as many concrete projects as the United States, the fact that there is no now does not mean that there will be no in the future. In the future, China's urbanization process will accelerate, and the urbanization rate will definitely exceed 50 percent, and the value of China's concrete projects will definitely far exceed the 6 trillion US dollars in the United States. Let's think about it, if we are still like the United States, or even we may not be as good as the United States, how many social resources will be wasted? So we must not underestimate what we do, although the concrete industry looks very simple, but it is related to the national economy and people's livelihood!"

Why Li Ruoyu said this, because he knows the future development of China's concrete industry and a series of problems brought about by China's future real estate development. By 2013, China accounted for about 60% of the world's cement production and consumption – the Three Gorges Dam project alone consumed 16 million tonnes of cement. Bill Gates, the richest man in the world, made a striking contrast to give people an intuitive understanding of China's gobbling of cement in the 21st century. Bill Gates said on his blog that between 2011 and 2013, China consumed 6.6 billion tons of cement, more than the United States consumed in the entire twentieth century.

From 1978 to 2007, China produced a total of 13.086 billion tons of cement in 30 years. From 2008 to the first half of 2014, China produced a total of 12.773 billion tons of cement in six and a half years, which is about equal to the sum of the previous 30 years. In 2015, the comprehensive energy consumption of cement was 90 kg of standard coal, the proportion of clinker was 55%, and the development of alternative fuels was still negligible, and the total carbon dioxide emission was 1.22 billion tons, which was the carbon dioxide emission at the peak of the output of China's cement industry. Therefore, the development of high-performance concrete, reducing the amount of cement used, and improving the service life of buildings are the only way for China to achieve a low-carbon economy and sustainable development in the future. Of course, these concepts did not exist at this time, but since Li Ruoyu was reborn, he made good use of these understandings of the future development trajectory to better contribute to China's development.

After sorting out his thoughts, Li Ruoyu said in a heavy tone: "The durability of concrete in China's structural engineering is also very strict. In the 90s of the 20th century, the Ministry of Construction organized a survey of domestic concrete structures, and found that most industrial buildings and open-air structures need to be overhauled after 25~30 years of use, and the service life of buildings in harmful media is only 15~20 years, and the use and maintenance conditions of civil buildings and public buildings are better, and they can generally be maintained for 50 years. Ports, wharves, gates and other projects are in the marine environment, chloride ion erosion causes steel corrosion, and the cracking and corrosion of the guide components are the most severe. In 1980, the Ministry of Communications, the Fourth Harbor Bureau and other units surveyed 18 wharves in South China, and found that more than 80 percent of them were corroded by steel bars with severe or relatively severe problems, and some of them were only 5 to 10 years after they were completed. ”