January 11, 2023，Published on the website of the Ministry of Industry and Information Technology《Notice on the announcement of the demonstration project of group standard application in 2022》（Letter from Ministry of Industry and Information Technology（2022）Number 272）The file（See the screenshot below），Announced 102 group standard application demonstration projects selected by the Ministry of Industry and Information Technology in 2022.。Among，Issued by China Construction Machinery Industry Association《Asphalt cold recycling plant mixing equipment》，Finally, it passed the evaluation and confirmation.，Enter the project directory。

《Asphalt cold recycling plant mixing equipment》It is established by China Construction Machinery Industry Association.，Group standards formulated by the Road Construction and Maintenance Machinery Branch。The standard was drafted by Chang'an University.。The units participating in the drafting are：Chang'an University、Shi Gaoma mechanical equipment（Zhenjiang）Limited company、Taian Yueshou Mixing Station Equipment Co., Ltd.、Langfang Deji Machinery Technology Co., Ltd.、Xuchang Detong Vibration Mixing Technology Co., Ltd.、Shandong Beite Heavy Industry Co., Ltd.、Shantui Jianyou Machinery Co., Ltd.。Asphalt cold recycling plant mixing process and equipment have been active in the market for many years.，Although it is similar to stabilized soil mixing plant，But there are also clear differences in professionalism.。Over the years，There is no relevant standard in the market.，Resulting in uneven quality of equipment，The mixing quality is also difficult to meet the engineering requirements stably.。Teachers Zhang Chenguang and Zhao Lijun of Chang'an University are teaching.，Using several test projects of the Road Construction Machinery Test Center of Chang'an University，The asphalt cold recycling plant mixing equipment has been studied for many years.。To ensure the mixing quality of the equipment，Led the drafting and compilation of the standard。After discussion、Validate，The key control indexes and technical requirements of this standard are put forward.：Dynamic batching accuracy of aggregate and recovered material≤1.5%；Dynamic Burden Accuracy of Powder≤1%；Asphalt dynamic batching precision≤1%；Water supply dynamic batching precision≤1%；The allowable deviation of mixer speed is the design value.±2%；Control Room Operator Ear Noise≤70 dB(A)，Ambient noise≤80 dB(A)。By controlling the above indicators，Can meet the requirement of stability of the production quality of the equipment。This standard is formulated for the first time in China.，It fills the domestic gap.。October 2021，Road Construction and Maintenance Machinery Branch of China Construction Machinery Industry Association Holds Standard Review Meeting in Xi'an，Experts in the field of industry subdivision were invited to conduct a careful review of the standard submission.。The review concluded that：Compliance of standard preparation documents and drafting processGB/T 1.1-2020《Directives for the work of standardization Part 1：Structure and drafting rules for standardized documents》And《China Construction Machinery Industry Association Group Standard Management Implementation Rules》Relevant requirements；The structure is complete，The technical requirements and specified indexes are reasonable and advanced.；The basic requirements and performance indexes of asphalt cold recycling plant mixing equipment are specified.，The test method is established.；This standard is formulated for the first time in China.，Fill the domestic gap，Its technical level has reached the advanced level in China.；The standard submission document was unanimously adopted.。The development of this standard，It will stabilize the production and application of asphalt cold recycling plant mixing equipment.、The role of norms，It is of great significance to improve the quality of plant-mixed cold recycling project。This time, it was selected as the list of 100 group standard demonstration application projects of the Ministry of Industry and Information Technology in 2022.，It shows that the standard has significant industry influence.。At the same time, it also urges us to attach importance to high-quality development.，Provide more high-quality standards for the market，To make greater contributions to the high-quality development of road construction and maintenance machinery in China.。