The 11th issue of HaberTeknik magazine, which includes sectoral developments and innovations, has been published. You can access the journal from the link below. https://www.haberteknik.com.tr/sayilarimiz/                                              

İstanbul Airport, which is the biggest infrastructure project in the history of the Republic and the first phase of which was commissioned on October 29, 2018, serves the passengers with 2 runways and a terminal building with passenger capacity of 90 million under the scope of the first phase as of April 6, 2019. Covering an area of 76.5 million square meters, the new airport stands out as as a global hub between the continents of Asia, Africa and Europe. It was presented the 'Special Achievement Award' in the 'Superior Innovation' category at the Leisure Lifestyle Awards of Global Traveler, one of the most prestigious publications in tourism sector in the world. The journey of İGA started with the tender of the State Airports Authority for the construction and operation of İstanbul Airport on May 3, 2013. Cengiz-MAPA-Limak-Kolin-Kalyon Joint Venture was founded as a consortium under the name of İGA on October 7, 2013 for the purpose of constructing the İstanbul Airport and operating it for 25 years. The construction was planned to be completed in four phases. Kalyon - Cengiz - Mapa - Limak Joint Venture, which has activities in various sectors such as construction, energy, tourism, mining, port and airport operation both inland and abroad, has experience in the construction of eight airports. * İstanbul Sabiha Gökçen (Turkey) * Pristina (Kosovo) *Cairo Terminal 2 (Egypt) *Baku Heydar Aliyev (Azerbaijan) *Hawler – Erbil (North Iraq) *Duhok (North Iraq) *Ordu-Giresun (Turkey) Additionally, Limak Holding, one of the consortium members, has experience in the operation of the İstanbul Sabiha Gökçen (Turkey) and Pristina (Kosovo) airports. As a new airport, İstanbul Airport is located on the Black Sea coast in the European side of İstanbul, at Çatalca-Göktürk-Arnavutköy junction and between the villages of Tayakadın and Akpınar. İstanbul Airport, which can be easily accessed by public transportation vehicles such as buses and airport transfer services as well as airport taxi and private cars, is 36 km from Levent in the European Side, 40 km from Taksim, 47 km from Üsküdar in the Asian Side and 52 km from Kadıköy. İstanbul Airport also has access to the Yavuz Sultan Selim Bridge and the North Marmara Highway. İstanbul Airport plays host to its passengers at domestic and international sections with an excellent service approach. Currently, there are flights organized to 45 cities inland from the new airport. International flights are organized to 249 different cities in 110 countries.

We, as İstanbul Teknik A.Ş., are one of the global brands thanks to our careful and high quality production and innovative and problem-solving products, and we have reached a level where we can export our products to 70 countries based on our constantly high quality production and strong corporate structure. Although it is hard for a Turkish company that makes 100% domestic production to export products to a country that is the main producer of geogrid; ForTex Geogrid, which has successfully passed numerous difficult tests and certification processes required for acceptance by Germany government authorities, has secured its well-deserved position in the German market. İstanbul Teknik has proved once again that it is one of the very few companies that can fulfill these high international standards. This was a difficult process and it paid off. The geogrid trade that was conducted with Germany for years has now reversed in our favor and made Germany the largest export market for our geogrid products. In addition, thanks to our increased capacity upon the start of production at our new factory founded in Bolu Organized Industrial Zone, we have the capability of serving the German market as well as meeting the demands in Turkey. We are glad to share this news, which is a source of pride and income for our country, with you as our precious business partners.

Emulsion is defined as a mixture of two immiscible Liquids. In most emulsions, one of the phases is water. Emulsions are currently used in food, cosmetics and road construction applications in daily life. To produce emulsions, emulsifiers that contain hydrophilic (water-retaining) and hydrophobic (water-repellent) groups are required to be used in their structure. Bitumen emulsions are used in some road construction applications. Bitumen emulsions present a safer and more environmentally-friendly system than hot asphalt. Emulsions minimize the risk of fire and emission caused by hot bitumen. Besides, emulsions ensure less energy consumption as compared with hot mix applications. Bitumen emulsions are categorized into three classes by their shear time: fast shear, medium shear and slow shear emulsions. Fast shear emulsions shear in a short period of time when they come into contact with aggregate. For medium shear emulsions, this period is slightly longer. After the slow shear emulsions come into contact with aggregate, shearing is completed in a longer period of time. At the Central R&D Laboratory, studies are conducted in relation with bitumen emulsifiers for the purpose of using them in road applications. Accordingly, a slow shear emulsifier formula was developed at our laboratory for the cationic emulsion used in mortar-type coatings such as Slurry Seal and Micro Surfacing. All slow shear emulsifiers are imported. Certain mortar type coating applications were made in our country. However, the expected benefits could not be obtained from the past applications. Therefore, mortar type coating applications could not be developed in Turkey sufficiently. With the new emulsifier developed by us, stable slow shear bitumen emulsions can be obtained. These emulsions can remain intact for a long time without need to use any additives other than emulsifiers. The benefits of the slow shear emulsifier developed by us are as follows. * This product is manufactured in Turkey for the first time. * The quality of the roads constructed by using slow shear emulsion will increase. * The lifetime of the road will be extended. * It will be possible to work with damp aggregates. * In the road applications of hot bituminous mixtures; it is necessary to mix bitumen and aggregate at a temperature of 145-160°C. Emulsions allow for use from 85°C to room temperature. In this way, the energy consumption used for heating will be reduced. * In the fast shear emulsions, the time required to wet the aggregate and ensure adequate adhesion is shorter. For slow shear emulsions, the emulsion wraps the aggregate better as the curing time is longer. This will increase workability and ensure ease of application.

The route of the North Marmara Motorway starts at the Kınalı junction of the Silivri district on the European side of İstanbul and ends in the Eyüp district, Odayeri locality, which is connected to the Yavuz Sultan Selim Bridge, including the İstanbul Airport access roads. The Habibler-Hasdal junction access road, which is another extension of the North Marmara Highway in the European side, also offers an alternative to city traffic. The route of the North Marmara Highway starts from Kurnaköy toll booths in Pendik district in the Asian side of İstanbul and continues uninterruptedly until Akyazı district of Sakarya. Along this route, it is easy to access to Sabiha Gökçen Airport, İstanbul Park, Gebze Organized Industrial Zone, Dilovası TEM access road, D-100 access road, Osmangazi Bridge, Kocaeli- Çayırova road through Sevindikli junction and İzmit Körfez District through İlimtepe junction. This highway is a significant part of the project to create an uninterrupted highway network around the entire Marmara by connecting with the ongoing Çanakkale Bridge and access roads and the İstanbul İzmir Highway. İstanbul Teknik has undertaken the Kurtköy-Akyazı Section, Part 5 KM: 151+188+000, which is constructed by Cengiz İnşaat. İstanbul Teknik has also undertaken the Kurtköy-Akyazı Section, Part 4, KM: 129+650-151+500, which is constructed by Limak İnşaat. İstanbul Teknik has also undertaken the Kurtköy-Akyazı Section, Part 6, KM: 188+000-190+400, which is constructed by Kolin İnşaat. The tunnels constructed in these projects are among the widest cross-section tunnels in Turkey. Each tube is constructed for a 4-lane road, and has a width of 22 m and an arc length of 34.4 m.