Shocked to learn that Professor Lian Huizhen of Tsinghua University, a leading figure in China's concrete industry, passed away, China's concrete and cement products industry is deeply saddened and reluctant to give up. As the most firm guardian and guide of China's concrete industry, Professor Lian Huizhen, with more than 90 years of life, has perfectly interpreted the profound connotation of "old steed in the stable, ambition in thousands of miles". She is not only recognized as an "evergreen tree" in the industry, but also a candle that burns herself and illuminates the way for future generations to explore.
1. Foundation and development: The life of Professor Lian Huizhen, the guide of China's concrete technology, is a life of overcoming difficulties and laying a foundation for China's concrete industry. Since she graduated from the Civil Engineering Department of Tsinghua University in 1958, she has devoted her whole life to the teaching and research of building materials. In the early 1970s, she devoted herself to the research of high-strength concrete with great foresight, and successively undertook major scientific research tasks such as the "1000 #" high-strength concrete of the Navy Logistics Department and the high-strength fluid concrete of the Beibu Gulf offshore oil production platform. In the 1980s, as a backbone force, she undertook the national "Seventh Five-Year Plan" and "Eighth Five-Year Plan" key scientific and technological research projects, and made breakthroughs in the field of resource utilization of coal-fired desulfurization waste residue. The pilot products developed were successfully applied to many national projects, such as Beijing Badaling Cable Car Cableway and Beijing Asian Games Bicycle Training Ground Runway, and were jointly commended by many ministries and commissions. In the early 1990s, she joined hands with Academician Wu Zhongwei to systematically promote high performance concrete (HPC) throughout the country, and co-authored the book High Performance Concrete, which is still an insurmountable classic in this field. After retirement, she is still active in the front line of the project. In the first phase of Shenzhen Metro Project, Tianjin Station Transportation Hub, Qingdao Sea-Crossing Bridge and other major national projects, she pioneered the preparation of low-cement, high-durability concrete and structural crack control technology, and made great contributions to the progress of modern concrete technology in China.
Professor Lian Huizhen is not only an outstanding scientist, but also an industry model with a strong sense of social responsibility and critical spirit. In her life, she despised fame and wealth and valued truth. She was highly respected but never condescending. When people are impetuous and the development of the industry goes astray, she always dares to break the silence and speak out for justice. She pointed out that the current quality problems of concrete are not mainly technical problems, but problems of production relations, management system and industry concepts, and deeply analyzed the misunderstanding of modern concrete in the whole industry of ready-mixed concrete. What is more valuable is that Professor Lian Huizhen has always maintained the modesty and honesty of scientists. In her book Seeking and Perception, which summarizes her lifelong scientific research efforts, she unreservedly analyses her cognitive limitations and even her past mistakes. This truth-seeking spirit of "I examine myself three times a day" has set a benchmark for countless future generations who love the cause of concrete. She often warned technicians: "The existence is not necessarily reasonable, the authority of experts is not necessarily correct, and foreign countries are not necessarily advanced." This kind of critical thinking, which is not superstitious about authority and dares to question tradition, is the most precious spiritual wealth she left us.
3. Teaching and Educating People: Professor Lian Huizhen, a person who cultivates people by virtue, has devoted all her life to the platform and has students all over the world. She is not only a good teacher who imparts professional knowledge, but also a good friend who shapes character and guides direction. She always firmly believes that the foundation of scientific research and engineering lies in people, and besides the inheritance of technology, it is more important to cultivate new people with strength of character, responsibility and feelings. In teaching and teaching, she is not limited to the explanation of formulas, data and technical specifications, but pays more attention to guiding young people to establish a realistic and pragmatic scientific outlook. She often said that technology should not be superficial, and that every test data and every engineering conclusion should stand the test of practice and time. She guided the students to do experiments and run to the construction site by hand, requiring young people to go deep into the scene and take root in the front line, find and solve problems from the engineering practice, abandon the impetuosity of talking on paper, and practice down-to-earth skills. In the cultivation of outlook on life and values, she attaches great importance to the character shaping of indifference to fame and wealth and willingness to contribute. She set an example and devoted her whole life to the concrete industry, telling young people with her own experience that when choosing the engineering industry, she should have the spiritual realm of "success does not need to be mine, success must be mine", integrate her personal ideal into national construction, and embody the technical value in the actual effect of the project. She encourages young people to refuse impetuous atmosphere, sink down to their profession, stick to their original intention and work hard for a long time in ordinary posts. Professor Lian Huizhen put moral education first and honesty first throughout the whole process of educating people. She repeatedly urged the younger generation to be a man before doing technology, and to be honest and responsible. Concrete is related to the national economy and people's livelihood, and can not tolerate any perfunctory and slack. Practitioners must be in awe, stick to the bottom line, and be responsible for the quality of the project and the safety of the people. She encourages young people to dare to question and take responsibility, not blindly follow the authority, not blindly follow the trend, adhere to professional ethics, and always maintain the conscience of the industry. For more than 90 years, Professor Lian Huizhen has not only trained a number of technical backbones for the industry, but also used words and deeds to light up the spiritual beacon for the younger generation. Her rigorous academic attitude, integrity and sincere feelings of serving the country have long been integrated into the blood of every educated person and become the spiritual background of China's concrete industry from generation to generation.
4. Inheritance and Sustainability: An Ideological Lighthouse Guiding Green Development Until the last stage of her life, Professor Lian Huizhen, who is over 90 years old, is still quick-thinking and concerned about the future of the industry. She has a keen insight that under the goal of "double carbon", China's concrete industry must take the road of sustainable development with high quality and low carbon. She suggested that the core potential of concrete carbon reduction lies in "improving the efficiency of cement use". She strongly advocates optimizing the compactness of particle packing through scientific preparation and fine production, so as to greatly reduce the cement consumption per unit volume of concrete and achieve "better performance concrete with less cement". At present, when we are facing the severe challenges of energy saving and emission reduction, the technical route she put forward in that year is still the ideological beacon guiding the transformation and upgrading of the industry and realizing green development.
This person has passed away, but the spirit is everlasting. Although Professor Lian Huizhen is far away, her frankness, sincerity, wisdom and passion will always shine on the journey of China's concrete industry. Her academic works, technical specifications and profound philosophical thinking on the industry will solidify into a solid cornerstone to support the future of China's infrastructure, just like her beloved concrete.
"Life is endless, exploration is endless, in the short life, completely forget yourself, burn yourself, leave light for the world." This is the most authentic "Lian Huizhen Spirit" in our hearts. She practiced this belief with all her life's efforts and devoted her personal wisdom and enthusiasm to the construction of the motherland without reservation.
Professor Lian Huizhen, go all the way!
China's concrete industry will always miss you!
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