March 29, 2023-31，Highway Science Research Institute of the Ministry of Transport，Sponsored by the Road Engineering Branch of China Highway Society“The 15th Road Construction and Maintenance Technology Forum”Successfully held in Xiamen。

This meeting is based on“Durable green，Safety wisdom，Quality improvement”As the theme，Invite domestic road construction、Curing、Administration、Design、Construction、Many senior experts in scientific research and other fields conducted thematic discussions and sharing.。Wirtgen China is a leading technology enterprise in the field of road construction and maintenance.，Leading the trend of green and efficient road construction and maintenance technology，Invited by the organizer of the conference，Participated in the conference as one of its co-organizers。

More than 300 university scholars and research institutes from all over the country have technical specialist and are engaged in road construction and maintenance.、The relevant personnel of the construction industry gathered together，The new research results and technical trends of road construction and maintenance innovation and development in recent years are discussed.。

High-performance road cold recycling process with technical innovation

In order to achieve China's long-term goal of 2035，The state has promoted the construction of ecological civilization to the height of development strategy.，Green low-carbon environmental protection and resource recycling have become an important part of high-quality development.。Realized in the field of transportation“Comprehensive Transportation、Intelligent transportation、Green traffic、Safe traffic”It has become an important practice in the construction of national ecological civilization.。

In this context,，This forum focuses on new technologies and equipment for road construction and maintenance.、New structure and design method of subgrade and pavement、New Technology of Road Detection、Intelligent construction and smart highway、Pavement durability is improved、New technologies for green highway construction and maintenance driven by double carbon targets and other related fields。

Many experts and scholars from many well-known universities and related research institutions in China introduced the research results and application demonstration of frontier technology.，It opens up a new horizon for the participants.。

Advanced maintenance concept needs advanced maintenance equipment to support，The technological innovation of maintenance equipment also promotes the rapid development of maintenance industry.，The two complement each other，Together in green maintenance、Fast curing、Play a role in high-quality maintenance and other fields。

Wirtgen is the leader and innovator of cold recycling technology.，As early as the mid-1980s.，Wittgen created the first cold recycling machine 2000. VCR Application of，After that, technology and products continue to innovate and iterate.，Introduced a highly specialized cold recycling machine，A number of innovative milestones have been set on the road to success for this green conservation technology。

2013，Cold in-place recycling process of foamed asphalt based on synchronous paving（3800 CR）Come out，Since then, it has been successfully applied in many construction sites at home and abroad.。2019，At 3800 CR On the basis，Smarter and more efficient upgrades W 380 CR It was released and made its global debut at the construction site in China.。

Since then, this W 380 CR The new cold in-place recycling technology based on synchronous paving has been successfully applied in many provinces and cities.。Han Haihong, senior product manager of Wirtgen China, delivered at the conference.《Technical innovation of cold in-place recycling process》A keynote speech，This has been verified by practice and tested by data for the participants.，And has good energy conservation、Regeneration technology innovation achievements of emission reduction and economic benefits。

Manager Han introduced the innovation goal of cold recycling technology in place, which represents the advanced technology of highway maintenance, to the participants.：High efficiency、Intelligent、Synergy、Low carbonization、Systematization，And W 380 CR Cold recycling unit in situ is the master of cold recycling technology innovation。

W 380 CR Cold in-place recycling unit is suitable for structural maintenance of highway asphalt pavement，Its diversified and flexible construction mode can realize single-lane cement cold recycling in place.、Single-lane foam asphalt cold in-place recycling，But also can realize that on-site double-layer cold regeneration of the cement and the foam asphalt.，The damaged asphalt pavement can be regenerated at one time.，100% recycling of old pavement materials，Reduce the generation of milling waste，Really achieve environmental protection、Efficient。

Take the mixture after cold recycling of foamed asphalt as an example.，Unit energy consumption is only 30% of that of hot asphalt concrete%，Reduce carbon emissions by more than 60 percent%。In addition, this new cold in-place recycling process is based on 100%In-situ reuse of pavement material，It can save the cost of new materials and reduce the transportation cost of old materials.，But also has good economic benefit.。

At the same time，Single lane up to 5~6 m/min Regeneration efficiency，It can save 40% of the cost of machine shift%；Regeneration one lane at a time，Cost savings on traffic impact25%。

Technological innovation and application effect of this equipment，Manager Han also made an introduction.。He stressed：“At present, this high performance cold in-place recycling technology is in high speed in more than ten provinces and regions.、Municipal、Loop line、National Highway、Provincial roads have been successfully applied.，The total application area has exceeded 10 million square meters.。Moreover, the values of these practical applications show that the pavement performance is good after the cold in-place recycling technology of foamed asphalt based on synchronous paving.，The measured data are better than the design requirements.。”（Click on the link to learn more about the effect of long-term tracking and testing of the application cases of innovative renewable technology achievements.。）

Wittgen China also has a booth during the conference.，The relevant personnel of the cold recycling product team also exchanged face-to-face with the guests and answered questions about the maintenance technology and application of Wittgen's high-performance low-carbon pavement.。

Wei has something to say

“Fourteen five”The period is to promote the green and low-carbon transformation of various industries.、The Critical Period of Implementing China's Double Carbon Target，China's renewable industry will enter a new stage of high-quality development.。

In this context，Improving the quality and efficiency of renewable projects in China，It is particularly important to promote the high-quality development of renewable projects in an all-round way，Transportation industry is one of the main forces of carbon emissions.，The challenges are greater.，At the same time, there are great opportunities for low-carbon transformation.。

The holding of this technical forum has brought positive significance to the sustainable development of road construction and maintenance in the transportation industry.，In the future, Wittgen will also contribute more to the implementation of China's low-carbon commitment to climate change with on-site cold recycling technology based on synchronous paving.。