“The original construction waste is something that people think can’t be used on the road.
“The promulgation of this industry standard is also a green environmental protection practice to strive to ‘eat dry and squeeze out’ construction waste.
The code earnestly implements the concept of green and open development and relevant requirements for the construction of a transportation power, adheres to the compilation principles of green, low-carbon, technical support and making full use of available resources, and realizes the maximum value and resource application range after the regeneration of construction waste.
In May 2018, Shaanxi traffic control group (formerly Shaanxi transportation construction group) actively responded to the call of the Ministry of transport to collect industry standards and applied for the industry standard of the Ministry of transport of “technical specification for the application of construction waste recycled materials in Highway Engineering” based on the research results of the key technologies for large-scale comprehensive utilization of construction waste recycled materials in highway engineering; In September 2018, the Ministry of transport identified the former Shaanxi Communications Construction Group as the editor in chief of the industrial standard of “technical specifications for the utilization of construction waste in Highway Engineering”.
After the formulation of the standard, many technologies can also be extended to other industries to provide reference for the construction of municipal roads and railways.
In addition, the technical practice of reuse of construction solid waste has also spawned and driven the development and technological innovation of industries around highway construction and waste treatment.” Xu Xijuan introduced that at present, Shaanxi Province is constantly promoting the research on the application of various wastes in highway construction.
In 2012, according to the requirements of Shaanxi Provincial Department of transportation, Shaanxi traffic control group (formerly Shaanxi Provincial Traffic Construction Group) decided to carry out the research on the comprehensive utilization of construction waste recycled materials by relying on the West Xianbei Ring Expressway, and determined the general topic of research on key technologies for large-scale comprehensive utilization of construction waste recycled materials in highway engineering, It is also included in the construction science and technology project of the Ministry of transport, with 10 sub topics to conduct systematic research from the aspects of special foundation treatment, subgrade filling, pavement base, small prefabricated components, environmental impact, policy and quota.
After crushing, screening and separation processes such as “crushing to pieces” and “remanufacturing”, it will become recycled materials and be used in highway engineering construction.
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It is of great social significance for effectively solving the problems of transportation, stacking and treatment of construction waste in China, solving the growing problem of “waste besieging the city”, and “turning waste into treasure” of construction waste, It is of great significance to solve the shortage of highway sand and gravel materials, save land, protect the environment and promote the development of green transportation.
Subsequently, the scientific research achievements of “Research on Key Technologies of large-scale comprehensive utilization of construction waste recycled materials in Highway Engineering” were successively applied in the capacity expansion project of Xi’an Ring Expressway in Shaanxi Province and the south section of Xi’an outer ring expressway.
has developed and produced crushing, sorting and crushing equipment for construction waste, decoration waste and floating waste according to the current miscellaneous diseases such as difficult sorting and many types of construction waste and decoration waste, which has achieved good results in pilot projects in major cities across the country, Welcome interested friends to visit the site.
In the south section of Xi’an outer ring expressway, the specially treated construction waste is transformed into qualified road building materials for subgrade filling and slope protection, which can consume 11 million tons of construction waste, reduce the consumption of construction waste, cover an area of about 6000 mu, reduce land excavation of more than 3000 mu, and reduce carbon dioxide emission of about 70 million m3.
The complete set of technology for comprehensive utilization of construction waste has become mature in the field of highway construction in Shaanxi.
“The standard provisions on construction waste recycling technology in the code are very detailed and have strong guidance in practical application,” said Xu Xijuan, director of scientific research management department of Xi’an Highway Research Institute Co., Ltd.
Source: relevant recommendations of China Network · silk road China channel ▼ Zhengzhou Yongcan mechanical equipment Co., Ltd.
The project uses about 6 million tons of recycled materials of construction waste, resulting in direct and indirect economic benefits of 1 billion yuan.
We should remove it.
In the next step, it will conduct in-depth research on solid waste utilization technology to strive for the upgrading and transformation from “carbon reduction” to “zero carbon”.
In August this year, the Ministry of transport issued the technical specification for the utilization of construction waste in Highway Engineering (hereinafter referred to as the specification), which was edited by Shaanxi Transportation Holding Group Co., Ltd.
After years of scientific and technological research and engineering practice in Shaanxi transportation industry, more and more construction waste will start the journey of “regeneration”.
With the development of recycling technology of fine comb construction waste in highway engineering, the compilation of a systematic, comprehensive and instructive code is not achieved overnight.
(hereinafter referred to as “Shaanxi transportation control group”), as a recommended standard for the highway engineering industry and will be implemented as of November 1, 2021.
When compiling the technical code for the utilization of construction waste in highway engineering, it fully absorbed the mature application achievements and specifications and standards of construction waste at home and abroad in the field of highway engineering.
In August 2021, the Ministry of transport issued the specification.
According to the characteristics of construction waste in China and the needs of highway engineering, it is based on the differentiated application concept of different uses due to different characteristics of recycled materials of construction waste, The application parts and technical standards are given to the greatest extent, and a number of scientific research achievements are the first in China.
Xu Xijuan introduced that before 2010, her highway research technology team had begun to study the application technology of construction waste in highway construction.
There are strict technical requirements and specifications for the design, construction, inspection and acceptance of construction waste utilization.
Finally, by turning waste into treasure, 3000 mu of land occupied by the waste dump is restored, more than 1500 mu of land excavation area is reduced, 170000 tons of quicklime, 32000 tons of coal are saved, and more than 40 million cubic meters of carbon dioxide emissions are reduced.
Through technical research, we” invite “the construction waste into the project.
The promulgation of the industry standard of the code is of guiding significance for realizing the popularization and application of construction waste in highway engineering and standardizing the technology and process of construction waste application.
On the premise of ensuring the quality, we will study how to” use it well “after it can be used.” Xu Xijuan said.
Although the large-scale application of construction waste in highway engineering has great economic and social benefits, there is no ready-made relevant industry standard for the application of construction waste in Highway Engineering in China’s transportation field, which affects the comprehensive promotion of construction waste recycling in the transportation field.