Pavement Renovation at Leipzig Halle Airport，Required within 30 days，Full depth milling of more than 2 miles of runway and connecting taxiway。A total of 350,000 tons of ultra-high strength reinforced concrete（Continuously reinforced concrete pavement—CRCP）Milling is required。

In order to complete such a large construction project quickly and efficiently,，The contracting company used Wittgen's W 250 Fi Large cold milling machine，It is equipped with a specially modified milling drum.，With super milling ability。

Large-scale repair of damaged taxiway

Due to the presence of the north runway“Concrete cancer”：Alkali—Aggregate reaction，This situation can also occur on cement concrete paved roads that have been used for a long time.，Cause irreversible damage to the concrete from the inside。So，Full depth milling of the north runway is necessary。

A construction project of this scale，High-performance construction equipment and excellent cutting technology are required.。Full of power、Power over 1000 hp Wittgen W 250 Fi The cold planer is perfectly capable.。This large cold planer is fitted with an additional counterweight，O as to give full play to its performance potential in the cutting process.：W 250 Fi Huge track traction and milling rotor cutting force。

Large cold milling machine used in the construction project of Leipzig Halle Airport，And equipped with ECO High efficiency milling rotor and special cutter head。ECO High efficiency milling rotor compared to standard milling rotor，At larger tool spacings，The number of tool bits is reduced by 50% 。The fewer the cutting tool，The smaller the cutting resistance，This also makes it possible to mill harder cement pavement。

   15 Wirtgen cold milling machines，One of the largest milling projects in the world

The powerful milling machine unit milled 350,000 tons of concrete in just 30 days.。That is to say，On average, more than 1100 tons of concrete are milled by each milling machine every day.。The first step is to mill the cement pavement layer as quickly as possible.。Upon completion of this work，Use with Precision 3D Machine for leveling technology，Build an ideal foundation，Convenient for subsequent laying。

Cement pavement milling—And that application range is wide

Cement pavement milling is a globally recognized technology.，Wittgen has successfully applied this to many construction projects.。Milling technology can also be used for milling dowel bar，Reinforced concrete pavement with tie rods and wire mesh。

   Using the Wirtgen Cold Milling Machine，Achieve sustainable、Cost-effective cement pavement milling

In addition，Selective milling，Pavement structure layers with different characteristics can be effectively separated，Thereby reducing material contamination。Another advantage is that：In most cases，The milled concrete can be recycled without further treatment。

Low carbon and environmental protection 

Even the granular concrete produced in the Leipzig Airport project，Can also be used as a valuable recycled building material by 100.%Reuse。They will be temporarily stored near the construction site.，After that, it will be used for the roadbed of the later renovation stage of the new runway.。Short shipping routes and low demand for new materials，Realizing green low-carbon environmental protection。

   Every Wittgen W 250 Fi On average, more than 1100 tons of concrete are milled by milling machines every day.

Other than that，This Wirtgen cold planer also combines a series of environmentally friendly machine technology.。For example，In milling mode controlled by the Wirtgen Milling Assistant，Engine speed is optimized，And a temperature-controlled cooling fan，Engine speed can be adjusted，Thereby achieving the purpose of saving fuel oil.。These all help to protect the environment and save valuable resources.。Automatic switching on and off of the water spray system and metering of the water consumption according to the milling performance，It also greatly reduces water consumption.。

Planning ahead is the key to success.

In order to ensure the smooth construction,，The project planning work will be carried out in advance.。Practical application testing began as early as eight months before the start of the project。This allows an accurate estimation of the consumption of the cutter head and other wearing parts.，And procure sufficient spare stock for storage at the worksite.，Minimize machine downtime for cutter head replacement and maintenance，Ensure maximum productivity。

   In this construction task，Wittgen W 250 Fi Equipped with a special type of milling rotor and additional counterweight

So，The large runway rehabilitation project at Leipzig's Halle Airport was able to be successfully completed within the stipulated time frame.，Timely cement pavement milling and ideal pavement milling effect，Has laid a solid foundation for its success.。

In charge of the projectKutterProject and branch managers of construction companiesBernhard FischerVery satisfied with the successful conclusion of the project，He said：“Compared with milling asphalt pavement，Milling this super-hard cement pavement，The milling speed must be slow.。At the same time，The wear of the milling tool also increases significantly。However，The construction is progressing smoothly.、Fast，Plus ideal milling effect，The additional cost of material wear and tear is greatly compensated.。Using a cold planer to mill cement pavement is ideal for this project.。”