In 1992, Ouyang Dong presided over the "Study on Converter Slag in Iron and Steel Works and Its Preparation of Slag Slag Portland Cement" and won the second prize for scientific and technological progress in Guangdong building materials industry. Its research results on the grinding performance of steel slag and slag have long guided the industrialization of iron and steel slag mineral admixture in the industry.
In p>1997, Ouyang Dong published the papers "Strength Formula for Mix Proportion Design of Six-component Concrete" and "Strength Formula of Concrete with Admixtures and Its Application", put forward the strength formula of six-component concrete with admixtures, and put forward and introduced the concept of activity coefficient of admixtures, so that the application scope of concrete strength formula was extended to six-component concrete and high-strength and high-performance concrete with various admixtures. In 211, the national concrete mix design code was revised, the concept of excess coefficient was abandoned, the influence coefficient (meaning is the same as activity coefficient) was introduced, and the six-component concrete strength formula was adopted, so that the six-component concrete strength formula was formally written into the current code "Code for Design of Mix Proportion of Ordinary Concrete" (JGJ55-211) and became the core formula.
In p>21, Ouyang Dong presided over the research on the concept, theory and application of concrete mineral water reducer, and the development of C8 concrete with 253m ultra-high pump range in Guangdong Posts and Telecommunications Building Project, and systematically put forward the concept and theory of concrete mineral water reducer, which promoted the prosperity and development of China's concrete mineral admixture industry, and successfully solved the major technical problem that the height of ultra-high-strength concrete viscous large pump was limited in the construction of the second high-rise building in Guangzhou. C8 ultra-high strength concrete was developed and pumped to a height of 253 meters at one time, which set a new record for the research and construction of ultra-high strength concrete pumping in China at that time. Important media such as Yangcheng Evening News reported this achievement on the front page. In 24, this achievement won the second prize of Guangdong Science and Technology Progress Award, and in 27, it was selected as the "Tenth Five-Year Plan" outstanding construction scientific and technological achievement in Guangzhou.
In p>22, Ouyang Dong presided over the project "Research on Airport High Performance Concrete and Its Application in Guangzhou New Baiyun International Airport", put forward the whole course crack resistance theory of concrete condensation hardening, and successfully developed a new type of concrete material with high crack resistance of shrinkage compensating polypropylene fiber, which was successfully applied in the terminal building of Guangzhou New Baiyun International Airport, with the consumption exceeding 6, cubic meters, and achieved good results in concrete crack control. The achievements were selected as one of the top ten construction scientific and technological achievements in Guangzhou during the Tenth Five-Year Plan.
In p>23, Ouyang Dong published the research results on the composition and structure of low-temperature rice husk ash, and it was found for the first time in the world that low-temperature rice husk ash (L-RHA) was composed of nano-structured SiO2 _ 2. Therefore, Ouyang Dong first put forward the idea and technology of preparing nano-SiO2 _ 2 by calcination in the world. This technology is completely different from the current gas phase method, precipitation method and sol-gel method, and also completely different from the existing acid-base method for extracting silica from rice husk. Calcination technology does not destroy the original nano-structure of rice husk biomass SiO _ 2 in the whole process, but separates rice husk biomass nano-SiO _ 2 from impurities and organic components through pretreatment and thermal decomposition technology. This technology is original and innovative, and it is hopeful to realize the low-cost preparation of high-quality nano-SiO _ 2 and greatly improve the cost performance of nano-SiO _ 2. In 26, this technology won the national invention patent and the Lie Bin International Invention Gold Award. The first edition of People's Daily, the first edition of Guangming Daily, Xinhua News Agency and the portal of the Central People's Government reported this achievement.
In p>27-28, as an expert in the West Tower Project of Guangzhou Pearl River New Town, Ouyang Dong presided over and participated in the demonstration and review of various main technical schemes for pumping construction of C1 ultra-high strength concrete over 4 meters.
Since p>27, Ouyang Dong has systematically carried out "Research on Some Important Problems of Durability of Sea Sand Concrete". At the beginning of 213, the "Sea Sand House" incident broke out in Shenzhen. On March 23rd, 213, Guangdong Science and Technology News published an exclusive interview with Professor Ouyang Dong on the issue of sea sand, answered the concerns of all sectors of society, put forward safe and feasible disposal opinions, and constructive opinions on the use and supervision of sea sand, and launched an initiative to vigorously study and promote artificial sand and reclaimed sand, which contributed to calming this incident and developing reclaimed sand artificial sand in Guangdong.