As a basic raw material industry, the cement industry plays an important role in global economic development, but at the same time it produces huge carbon dioxide emissions. In order to achieve the "dual carbon" goal, experts from inside and outside the industry are also actively exploring new ways to reduce carbon emissions in the industry.
Recently, jointly sponsored by "China Building Materials News", China Construction Science and Technology Press, and China Solid Waste and Ecological Materials Branch of the Chinese Ceramic Society At the seminar on the theme, more than 10 industry experts who participated in the conference said that the research and development of low-carbon cementitious materials is of great significance to the building materials industry to achieve carbon emission reduction.
The development of low-carbon cementitious materials has great potential for solid waste utilization
Wang Dongmin, chairman of the Solid Waste and Ecological Materials Branch of the Chinese Ceramic Society and a professor at the China University of Mining and Technology (Beijing), said that this seminar will closely integrate experts, enterprises, and industry-representative window units to achieve a combination of industry, academia and research.
A few days ago, at the “low-carbon concrete” expert symposium organized by the Ready-mixed Concrete Branch of the China Concrete and Cement Products Association and the China National Construction Union Trust Certification Center, after discussions, everyone basically focused the development of low-carbon concrete on low-carbon cementing. Material. my country is the world's largest cement country, with annual output of more than 2.2 billion tons for several consecutive years, which has made a great contribution to the sustainable development of the national economy. However, the cement production process emits a large amount of carbon dioxide and consumes a large amount of natural mineral resources and energy. , The problem is very prominent, and a consensus has been formed at home and abroad, so the study of low-carbon cementitious materials is of great significance.
Shanghai Biaoheng New Material Technology Co., Ltd. has long been committed to high-tech green solutions for solid waste in high-energy-consuming industries such as cement and alumina. The basic raw materials of the geopolymer ecological cementing materials developed by the company are all derived from various industrial solid wastes. It is a practitioner of the production of low-carbon cementing materials by the utilization of solid waste as a resource. At the meeting, Yang Xiaobin, Chief Strategy Officer of Shanghai BioHeng Renewable Resources Co., Ltd. shared a few feelings. He said that carbon neutrality and carbon emission reduction are major trends, and the utilization of solid waste resources is one of the most potential areas for reducing carbon emissions. , But it is necessary to think beyond the idea of turning waste into treasure. The resource utilization and consumption of solid waste is the major prerequisite. In addition, in the future, it is necessary to establish a policy platform, a service platform and a technology exchange platform to jointly promote the development of the industry.
Professor Liu Ze from China University of Mining and Technology (Beijing) is mainly engaged in the utilization of solid waste resources (the application of solid waste in cement, mortar, concrete and other building materials), alkali-activated cementitious materials, building energy-saving materials, ecological environmental protection materials, Research on the evolution of the microstructure of solid waste and building materials. He said that alkali-activated gelling materials, also known as geopolymers, are inorganic polymers with an amorphous three-dimensional network structure formed by aluminosilicate raw materials under the action of alkaline activators. Many ancient buildings have used alkali-activated materials, which have outstanding durability and great potential in the utilization of solid waste resources.
Carbon reduction should be calculated from the entire life cycle of carbon footprint
Guojian Lianxin Certification Center Co., Ltd. is an authoritative R&D organization and third-party service organization in the field of industrial energy conservation and green and low-carbon in the building materials industry. It has done a lot of work in implementing green development policies in the building materials industry and promoting the transformation and upgrading of enterprises. At the seminar, Yin Jingyu, deputy general manager of China Union Trust Certification Center Co., Ltd., based on the concept and methodological standards of life cycle carbon footprint assessment, examples and comparisons of life cycle carbon footprint calculation results, and carbon based on the life cycle carbon footprint calculation results. The analysis of emission reduction path and the four aspects of carbon neutral solutions based on the perspective of the entire industry chain of "clinker-cement-concrete-building" were exchanged. She pointed out that "low-carbon, carbon reduction and carbon neutrality" are the methodological standards for carbon footprint calculations throughout the life cycle; "carbon reduction" technologies should aim to reduce the carbon footprint throughout the life cycle, taking into account the economics and emission reduction potential to determine the priority Grade; "Carbon neutrality" should be planned based on the perspective of the entire industry chain of "clinker-cement-concrete-building", with reduction, durability and long life, carbonization, heat storage, and reuse as important factors to consider.
"Low carbon is the direction of technological development of the cement and concrete industries under the'dual carbon' goal. However, in the development process, we must clarify what low-carbon cementitious materials refer to? Why are they used?" Professor Jiang Zhengwu of Tongji University pointed out that everyone We must understand that carbon neutrality is not only a technical problem, but also a problem of the balanced development of the economy and society of the industry. Therefore, it cannot be simply considered that carbon neutralization by materials absorbing, reducing, and using carbon dioxide is carbon neutral. Instead, it is necessary to consider low-carbon technological approaches from the perspective of the entire life cycle, formulate a roadmap for cementitious materials, and adopt multiple approaches such as cross-industry carbon reduction. measure.
Professor Gong Xianzheng of Beijing University of Technology's main research direction is eco-environmental materials, life cycle analysis and ecological design. He has long been engaged in eco-environmental materials research, material flow analysis, life cycle analysis, material (product) ecological design, life cycle management, and material resource processing. Research and development of technology and utilization technology. He said that low-carbon development requires standards first. Currently, there are some relevant standards both domestically and internationally, which provide a basis for achieving the "dual carbon" goal. But how to calculate the carbon footprint? What is included in the accounting content? There are still many issues that are worthy of discussion, and standards must be regulated.
To achieve the "double carbon" goal, you should walk with multiple legs together
"Achieving the goal of'double carbon' requires walking on multiple legs, and multiple technologies and multiple links can be carried out simultaneously, rather than a single link can be completely resolved." Professor Shi Caijun of Hunan University believes that it must be based on various environments. , Various gelling materials with different characteristics need to be used or prepared. At the same time, in the preparation process and application process, we must consider how to reduce or reduce carbon emissions. Only in this way can we truly achieve the "dual carbon" goal.
"In view of the'dual carbon' goal, I think we can encourage the development of multi-path, blooming carbon reduction technologies." Zhang Yamei of Southeast University said at the seminar to reduce the amount of cement clinker in concrete and develop new types of alternative cement. Low-carbon cementing materials, the development of carbon-fixing cementing materials, the development of low-carbon production processes, and the reuse of solid waste to replace concrete raw materials are all ways to achieve the “dual-carbon” goal. Interdisciplinary development of disruptive cementitious materials technology, establishment of scientific uation methods for the whole process, low-carbon design of the whole process from raw materials to end applications.
"The so-called low-carbon cementitious materials are all comparatively speaking. Among the three most commonly used cementitious materials, Portland cement has carbon emissions compared to the other two lime and gypsum cementitious materials. Relatively speaking, it is relatively high. Therefore, as far as these three cementitious materials are concerned, I advocate reducing the use of Portland cement and increasing the use of lime and gypsum." China Bulk Cement Promotion and Development Association Chairman, National Cui Yuansheng, chief expert of the Building Materials Information Institute, believes that there are five major technical routes for the development of low-carbon cementitious materials. They are to reduce the amount of Portland cement, increase the proportion of alternative fuels and raw materials (AFR), increase the efficiency of clinker utilization, and develop new technologies. The cementitious material reduces the carbon emissions throughout the life cycle.
Zhang Weihong, Strategy and Public Relations Manager of Liebherr (China) Co., Ltd., from the past and present of carbon emissions, the European Cement Carbon Neutral Plan and the importance of low-carbon cementitious materials, and low-carbon cementitious materials are three aspects of high-quality development. Expressed personal opinions. He said that carbon dioxide contributes more than 60% of the greenhouse effect. For the building materials industry, the current opportunities can be summarized as energy decarbonization, resource reduction, terminal power, and system intelligence.
Wang Dongmin has long been committed to the research of fine chemical synthesis and application of modern high-performance cement concrete materials and chemical admixtures, industrial/mining solid waste treatment and ecological environment building materials preparation and application. Speaking of the resource utilization of solid waste of low-carbon cementitious materials under the background of carbon neutrality, he said that high-durability concrete and high-durability buildings are one of the biggest means of low-carbon and energy-saving, because longer building life is equivalent to energy-saving. carbon. In terms of the utilization of solid waste resources, geopolymer materials are likely to become an important development direction in the future due to their advantages in the use of waste and saving natural resources.
Zhang Lijun, president of China Building Materials News and China Construction Technology Press, said in his speech that this seminar mainly discusses the development path of low-carbon cementitious materials and solid waste resource utilization under the background of carbon neutrality. Low-carbon cementitious materials are firstly a very important idea and perspective for solid waste utilization, and secondly, there are multiple paths and multiple ideas to achieve low-carbon goals, whether from the perspective of reducing carbon emissions, or from improving the technical level, or achieving Anything is possible for the low-carbon development of cementitious materials.
Wang Tianheng, head of the editorial department of China Construction Science and Technology Press, Yan Xiaobo, China National Union Trust Certification Center Co., Ltd., Han Shuang, Shanghai Biaoheng New Material Technology Co., Ltd., and relevant heads of China Building Materials News and China Construction Science and Technology Press Attended this meeting.
Recently, jointly sponsored by "China Building Materials News", China Construction Science and Technology Press, and China Solid Waste and Ecological Materials Branch of the Chinese Ceramic Society At the seminar on the theme, more than 10 industry experts who participated in the conference said that the research and development of low-carbon cementitious materials is of great significance to the building materials industry to achieve carbon emission reduction.
The development of low-carbon cementitious materials has great potential for solid waste utilization
Wang Dongmin, chairman of the Solid Waste and Ecological Materials Branch of the Chinese Ceramic Society and a professor at the China University of Mining and Technology (Beijing), said that this seminar will closely integrate experts, enterprises, and industry-representative window units to achieve a combination of industry, academia and research.
A few days ago, at the “low-carbon concrete” expert symposium organized by the Ready-mixed Concrete Branch of the China Concrete and Cement Products Association and the China National Construction Union Trust Certification Center, after discussions, everyone basically focused the development of low-carbon concrete on low-carbon cementing. Material. my country is the world's largest cement country, with annual output of more than 2.2 billion tons for several consecutive years, which has made a great contribution to the sustainable development of the national economy. However, the cement production process emits a large amount of carbon dioxide and consumes a large amount of natural mineral resources and energy. , The problem is very prominent, and a consensus has been formed at home and abroad, so the study of low-carbon cementitious materials is of great significance.
Shanghai Biaoheng New Material Technology Co., Ltd. has long been committed to high-tech green solutions for solid waste in high-energy-consuming industries such as cement and alumina. The basic raw materials of the geopolymer ecological cementing materials developed by the company are all derived from various industrial solid wastes. It is a practitioner of the production of low-carbon cementing materials by the utilization of solid waste as a resource. At the meeting, Yang Xiaobin, Chief Strategy Officer of Shanghai BioHeng Renewable Resources Co., Ltd. shared a few feelings. He said that carbon neutrality and carbon emission reduction are major trends, and the utilization of solid waste resources is one of the most potential areas for reducing carbon emissions. , But it is necessary to think beyond the idea of turning waste into treasure. The resource utilization and consumption of solid waste is the major prerequisite. In addition, in the future, it is necessary to establish a policy platform, a service platform and a technology exchange platform to jointly promote the development of the industry.
Professor Liu Ze from China University of Mining and Technology (Beijing) is mainly engaged in the utilization of solid waste resources (the application of solid waste in cement, mortar, concrete and other building materials), alkali-activated cementitious materials, building energy-saving materials, ecological environmental protection materials, Research on the evolution of the microstructure of solid waste and building materials. He said that alkali-activated gelling materials, also known as geopolymers, are inorganic polymers with an amorphous three-dimensional network structure formed by aluminosilicate raw materials under the action of alkaline activators. Many ancient buildings have used alkali-activated materials, which have outstanding durability and great potential in the utilization of solid waste resources.
Carbon reduction should be calculated from the entire life cycle of carbon footprint
Guojian Lianxin Certification Center Co., Ltd. is an authoritative R&D organization and third-party service organization in the field of industrial energy conservation and green and low-carbon in the building materials industry. It has done a lot of work in implementing green development policies in the building materials industry and promoting the transformation and upgrading of enterprises. At the seminar, Yin Jingyu, deputy general manager of China Union Trust Certification Center Co., Ltd., based on the concept and methodological standards of life cycle carbon footprint assessment, examples and comparisons of life cycle carbon footprint calculation results, and carbon based on the life cycle carbon footprint calculation results. The analysis of emission reduction path and the four aspects of carbon neutral solutions based on the perspective of the entire industry chain of "clinker-cement-concrete-building" were exchanged. She pointed out that "low-carbon, carbon reduction and carbon neutrality" are the methodological standards for carbon footprint calculations throughout the life cycle; "carbon reduction" technologies should aim to reduce the carbon footprint throughout the life cycle, taking into account the economics and emission reduction potential to determine the priority Grade; "Carbon neutrality" should be planned based on the perspective of the entire industry chain of "clinker-cement-concrete-building", with reduction, durability and long life, carbonization, heat storage, and reuse as important factors to consider.
"Low carbon is the direction of technological development of the cement and concrete industries under the'dual carbon' goal. However, in the development process, we must clarify what low-carbon cementitious materials refer to? Why are they used?" Professor Jiang Zhengwu of Tongji University pointed out that everyone We must understand that carbon neutrality is not only a technical problem, but also a problem of the balanced development of the economy and society of the industry. Therefore, it cannot be simply considered that carbon neutralization by materials absorbing, reducing, and using carbon dioxide is carbon neutral. Instead, it is necessary to consider low-carbon technological approaches from the perspective of the entire life cycle, formulate a roadmap for cementitious materials, and adopt multiple approaches such as cross-industry carbon reduction. measure.
Professor Gong Xianzheng of Beijing University of Technology's main research direction is eco-environmental materials, life cycle analysis and ecological design. He has long been engaged in eco-environmental materials research, material flow analysis, life cycle analysis, material (product) ecological design, life cycle management, and material resource processing. Research and development of technology and utilization technology. He said that low-carbon development requires standards first. Currently, there are some relevant standards both domestically and internationally, which provide a basis for achieving the "dual carbon" goal. But how to calculate the carbon footprint? What is included in the accounting content? There are still many issues that are worthy of discussion, and standards must be regulated.
To achieve the "double carbon" goal, you should walk with multiple legs together
"Achieving the goal of'double carbon' requires walking on multiple legs, and multiple technologies and multiple links can be carried out simultaneously, rather than a single link can be completely resolved." Professor Shi Caijun of Hunan University believes that it must be based on various environments. , Various gelling materials with different characteristics need to be used or prepared. At the same time, in the preparation process and application process, we must consider how to reduce or reduce carbon emissions. Only in this way can we truly achieve the "dual carbon" goal.
"In view of the'dual carbon' goal, I think we can encourage the development of multi-path, blooming carbon reduction technologies." Zhang Yamei of Southeast University said at the seminar to reduce the amount of cement clinker in concrete and develop new types of alternative cement. Low-carbon cementing materials, the development of carbon-fixing cementing materials, the development of low-carbon production processes, and the reuse of solid waste to replace concrete raw materials are all ways to achieve the “dual-carbon” goal. Interdisciplinary development of disruptive cementitious materials technology, establishment of scientific uation methods for the whole process, low-carbon design of the whole process from raw materials to end applications.
"The so-called low-carbon cementitious materials are all comparatively speaking. Among the three most commonly used cementitious materials, Portland cement has carbon emissions compared to the other two lime and gypsum cementitious materials. Relatively speaking, it is relatively high. Therefore, as far as these three cementitious materials are concerned, I advocate reducing the use of Portland cement and increasing the use of lime and gypsum." China Bulk Cement Promotion and Development Association Chairman, National Cui Yuansheng, chief expert of the Building Materials Information Institute, believes that there are five major technical routes for the development of low-carbon cementitious materials. They are to reduce the amount of Portland cement, increase the proportion of alternative fuels and raw materials (AFR), increase the efficiency of clinker utilization, and develop new technologies. The cementitious material reduces the carbon emissions throughout the life cycle.
Zhang Weihong, Strategy and Public Relations Manager of Liebherr (China) Co., Ltd., from the past and present of carbon emissions, the European Cement Carbon Neutral Plan and the importance of low-carbon cementitious materials, and low-carbon cementitious materials are three aspects of high-quality development. Expressed personal opinions. He said that carbon dioxide contributes more than 60% of the greenhouse effect. For the building materials industry, the current opportunities can be summarized as energy decarbonization, resource reduction, terminal power, and system intelligence.
Wang Dongmin has long been committed to the research of fine chemical synthesis and application of modern high-performance cement concrete materials and chemical admixtures, industrial/mining solid waste treatment and ecological environment building materials preparation and application. Speaking of the resource utilization of solid waste of low-carbon cementitious materials under the background of carbon neutrality, he said that high-durability concrete and high-durability buildings are one of the biggest means of low-carbon and energy-saving, because longer building life is equivalent to energy-saving. carbon. In terms of the utilization of solid waste resources, geopolymer materials are likely to become an important development direction in the future due to their advantages in the use of waste and saving natural resources.
Zhang Lijun, president of China Building Materials News and China Construction Technology Press, said in his speech that this seminar mainly discusses the development path of low-carbon cementitious materials and solid waste resource utilization under the background of carbon neutrality. Low-carbon cementitious materials are firstly a very important idea and perspective for solid waste utilization, and secondly, there are multiple paths and multiple ideas to achieve low-carbon goals, whether from the perspective of reducing carbon emissions, or from improving the technical level, or achieving Anything is possible for the low-carbon development of cementitious materials.
Wang Tianheng, head of the editorial department of China Construction Science and Technology Press, Yan Xiaobo, China National Union Trust Certification Center Co., Ltd., Han Shuang, Shanghai Biaoheng New Material Technology Co., Ltd., and relevant heads of China Building Materials News and China Construction Science and Technology Press Attended this meeting.