Wirtgen Group is a leader in road construction and maintenance technology.，It is famous for its professionalism and quality in the field of pavement construction.，In the field of highway transportation, it can provide diversified application solutions for different levels of road construction and maintenance needs.。And in the field of air traffic,，For airport construction and maintenance，Wirtgen Group also has a variety of professional products and technologies to meet the application needs.。Today, Xiaowei will simply popularize this knowledge for you.。
Airport is the core of international freight transport.，It is also an important hub for global business travelers and tourists.。So，Construction of new airport or reconstruction/When expanding an existing airport，They all need to meet very strict standards.。Regardless of the size of the airport、How about cargo throughput and passenger flow?，Be sure to follow specific safety codes.。
When building the new airport.，First, do a good job of subbase construction.。Build a runway、Taxiway、On the tarmac，Especially the roadbed、Bearing capacity of subgrade、High quality standards are required in terms of performance and service life。Especially the runway part.，Aircraft take-off and landing have a huge impact on the pavement.，At the same time, the surface slope of the pavement is affected by the high-speed rolling of the aircraft.、Flatness、The requirements for skid resistance are very strict.。
Is asphalt concrete material or cement concrete material used for new pavement?？
Both asphalt concrete and cement concrete can be used for paving。Cement concrete pavement belongs to rigid pavement.，Long service life of material，Strong impact resistance，Simply put, it is more commonly used in major hub airport construction projects.；Asphalt concrete pavement belongs to flexible pavement.，Pavement has no obvious joint，And that flatness is good，Higher passenger comfort，Later, it is easier to maintain.，More for smaller airports。
Whichever material is used，Airport pavement must have good smoothness and skid resistance.，To ensure the smooth operation of the aircraft in all weather conditions.。To prevent slipping，The cement concrete pavement shall be subject to transverse grooving treatment，Thus allowing the surface water to drain away.。
What is the structure of the runway?？
Due to the different loads carried by the runway，Different design principles and construction processes need to be considered。For runways that need to withstand heavy loads，The thickness of the facing is typically in the range 25 - 130 cm Between。
At 130 cm Examples of Thick Conventional Runway Structures，Bottom 50 cm The soil is improved and compacted by a binder such as cement as a substratum，Increase strength、Compactness and bearing capacity。The next 15 cm layer is a strong mixture of moisture-proof cement and frost-resistant sand.。Wirtgen soil Stabilizer and Hummer single drum roller can be applied to the construction of this part of the structure.。On top of that is a layer 25. cm Thick cement stabilized base（CTB），This part of Vogler's multi-purpose Pavers and Hummer rollers can be equally effective.。Finally，In the earth base、Grassroots（Cushion）Above is the surface layer.，Can be explained by Wittgen'sLarge and medium-sized slipform Paver adopts steel formwork or slipform paving to pave 40 cm Thick cement concrete slab。
In the new construction project of Istanbul Airport，Hummer single drum roller compacting cement stabilized base
In the Beijing Daxing International Airport apron construction project,，Wirtgen slipform Paver on paving thickness 42 cm A single-layer concrete slab.
During the construction of the new international airport in Yogyakarta, Indonesia，The runway is paved with high precision by 11 Wittgen slipform pavers.、Apron and taxiway
How to rehabilitate or expand existing airports？
Milling construction is always the first step of the pavement part of the airport rehabilitation project.。According to the degree of pavement damage，The Cold Planer is capable of milling only a few millimeters of asphalt or concrete pavement，To improve the grip of the surface layer.。If the asphalt pavement is severely damaged，Has affected the whole surface layer and even the bonding layer.，Wirtgen large cold Milling MachineOne-time full-thickness milling depth up to 35 cm。
And then a new asphalt concrete surface layer with good pre-compaction is paved again by using a Vogler paver.，The new surface course meeting the design requirements is formed by efficient compaction of Hummer roller.。
Frankfurt-Hahn Airport，Use of Vogler paver“Heat on heat”Renew the pavement by paving
Hummer roller during runway repair operations at Tbilisi Airport, Georgia
Sometimes it may even be necessary to stabilize the base.。In this case,，The Wirtgen Soil Stabilizer can be used once the milling is completed，Mixing lime or cement into existing soil，Hummer single steel wheel roller is used for compaction to achieve soil improvement.，Thereby improving the bearing capacity of the soil.，Lay a solid foundation for asphalt paving and compaction。
Sometimes according to the surface layer and/Or degree of damage to the base course，Different processes are required to repair the asphalt layer。Cement concrete surfaces can be pre-milled with a Cold Planer，Or after selective removal using an Excavator，And then pave it again。When expanding an existing airport，The new flight area must meet the requirements of the new airport construction.。
Wei has something to say
Wirtgen Group's products and technologies have been successfully applied in many airport construction and expansion projects around the world for many years.，Its professionalism and quality have been widely recognized.。Application requirements for different airport construction and maintenance projects，Whether it is asphalt concrete pavement or cement concrete pavement，Wirtgen Group can provide professional solutions to meet the stringent requirements of airport airfield pavement.。
Due to limited space，The above is just a brief overview of Xiaowei's airport application.，Coming up，Xiaowei will also bring you more application cases of different technologies in airport construction.，Stay tuned!
