南洋理工大学 (NTU) の新しい超低振動研究室が建設中です。
試験装置は磁気要素から半径 1.5 メートル以内に配置できないため、鉄筋の代わりに Dextra GFRP 鉄筋が基礎スラブと浮きスラブに設置されました。 GFRP 鉄筋は 3,000 リニア メートルの数量で納品されました。
GFRP 鉄筋を使用すると、請負業者は鋼鉄筋を非腐食性および非金属の複合補強材で置き換えることができます。軽量でありながら非常に高い引張性能を発揮します。性能/重量比はスチールの最大 8 倍です。
SeaWorld Abu Dhabi is an under-construction marine life theme park and animal research, rescue and rehabilitation center, planned to open in 2023 on Yas Island in Abu Dhabi, United Arab Emirates.
It will be the first SeaWorld park outside of the US, under a license from SeaWorld Parks & Entertainment. The Abu Dhabi-based company Miral is the owner and operator of the project.
Dextra have supplied 400,000 Bartec couplers for the connection and reinforcement of columns, beams, and slabs.
Moreover, 20,000 linear meters of cuttable GFRP (Glass Fiber Reinforcement Polymer) rebar have also been installed in the overlay slabs of the swimming pools, replacing steel rebars as the product of choice.
Thanks to its durability and corrosion-free nature, GFRP is an ideal material when the concrete structure is surrounded by water.
Source of images: https://www.constructionweekonline.com/projects-and-tenders/267779-construction-of-mirals-seaworld-abu-dhabi-hits-40-milestone, https://www.thenationalnews.com/lifestyle/things-to-do/2023/05/22/seaworld-abu-dhabi-opens-with-star-studded-event/
Battersea Power Station was a decommissioned coal-fired power station, located on the south bank of the River Thames, in Nine Elms, Battersea, in the London Borough of Wandsworth.
The power station was one of the world’s largest brick buildings and one of the last major symbols of London’s industrial past.
After the building remained empty for almost 40 years, a redevelopment plan kicked off with the mission to build a new iconic London landmark.
The 3rd phase consists in the creation of the so-called ‘Electric Boulevard’, which will include a connection to the Northern Line Extension station, more than 1,300 residential units, a 160-room hotel, retail spaces, restaurants and leisure facilities.
Dextra has been supplying several rebar coupler solutions to the site.
More than 100,000 Griptec and Rolltec cast-in-situ couplers were applied in masonry cells to alleviate the problem of rebar congestion due to long lap length.
Moreover, precast concrete panels reinforced by rebars were used in the building, equipped with 30,000 Groutec couplers for onsite connection of continuation bars.
The panels were easily lifted into place at the construction site: coupler cavities were then filled with non-shrink grouting mortar through the injection holes.
Finally, 3,000 Unitec bolted couplers were installed on rebars for repair works. These couplers were used to replace the damaged reinforcements with new ones and to connect to the finished structure.
The mixed-use community is anticipated to be completed in 2020 and to become a new landmark for locals, tourists and residents.
The Link is a 242-meter-high skyscraper in France, and one of the most recognizable structures in the heart of Europe’s largest business district. The building, located in Paris La Défense, will be the tallest high-rise in the country and a prime example of innovative engineering and cutting-edge technology in the world of architecture.
One of the key factors that sets this building apart from others is the use of Dextra’s Fortec coupler for the reinforcement of its structure. Fortec coupler is a highly advanced and innovative solution for reinforcing concrete structures, and it was used throughout the building to ensure maximum strength and stability.
The building is being constructed with a focus on sustainability and durability. The use of Fortec coupler was an important part of this effort, as it provides a reliable and long-lasting solution for reinforcing concrete structures. The coupler is made of high-strength steel, which makes it extremely durable and able to withstand the harsh weather conditions in the La Défense area.
Fortec coupler also offers a number of benefits over traditional reinforcement methods. For example, it is faster and easier to install than traditional reinforcement methods, which helps to reduce construction time and costs. It also helps to maintain the structure’s integrity even in the event of an earthquake or other natural disaster.
The Link La Défense building is set to be a marvel of modern engineering, and the use of Fortec coupler is a critical component in its design. The coupler’s durability, reliability, and sustainability will ensure that the building remains a prominent structure in the La Défense area for many years to come.
Image credit: www.skyscrapercity.com, thelink-ladefense.com, The Link © PCA-Stream
Guggenheim Abu Dhabi is a museum of modern and contemporary art, located in Saadiyat Island cultural district in Abu Dhabi, United Arab Emirates. As this awe-inspiring museum took shape, numerous challenges needed to be overcome, and Dextra provided crucial reinforcements to the structure, ensuring its stability, durability, and overall success. We supplied an astounding 140,000 Bartec couplers, 30,000 RepairGrip couplers, 50 tons of Geotec rock bolts, and 199 sets of DCP anchors, contributing significantly to the construction of this iconic masterpiece.
Strengthening the Structure with Bartec Couplers:
The Guggenheim Abu Dhabi stands tall and proud, thanks to the reinforcement provided by Dextra’s Bartec couplers. With a supply of 140,000 Bartec couplers, Dextra ensured that the concrete reinforcement in the structure remained robust and resilient. These couplers provide a reliable mechanical connection between reinforcing bars, enhancing the overall strength of the structure.
Seamless Rebar Connection with RepairGrip Couplers:
The use of 30,000 RepairGrip couplers helps connect rebars with no prepared threads, ensuring a seamless connection of rebars and minimizing the risk of structural failure.
Stabilizing Rocks with Geotec Rock Bolts:
In addition to the couplers, Dextra provided 50 tons of Geotec rock bolts to stabilize the rocks surrounding the museum. These rock bolts serve as critical anchors, reinforcing the natural formations and enhancing their stability. By utilizing them, the construction team effectively mitigated the geological risks associated with the site, ensuring a secure foundation for the museum.
Retaining the Seawall with DCP Anchors:
The museum, standing gracefully on the shores, required robust seawall retention, and Dextra’s DCP anchors provided the ideal solution. With the supply of 199 sets of DCP anchors, the seawall was reinforced and secured effectively. The anchors offer reliable and efficient retaining solutions for coastal structures, providing stability in the face of dynamic forces such as waves and tides.
Upon completion, it is planned to be the largest of the Guggenheim museums.
Qatar’s General Electricity & Water Corporation (KAHRAMAA) is currently building fresh water reservoirs to store the equivalent of 7 days of Qatar’s national consumption of fresh water at WHO (World Health Organization) standards. The primary reservoirs are located in five different sites in Doha area: Um Baraka, Um Salal, Rawdat Rashid, Abu Nakhla, and Al Thumama.
The first phase of the project involves the construction of 5 mega reservoir sites, and will support the expected water demand at horizon 2026. The second phase includes the construction of 16 additional reservoirs within the five existing mega sites. With a capacity of 3.5 million m3 each, the Reservoirs are among the largest of their kind in the world.
For this project, Dextra Middle East delivered more than 3 million バーテック couplers to the rebar fabricators and contractors involved on the different packages.
Project requirements regarding corrosion protection specify that the complete reinforcement, including couplers, should be epoxy coated. Dextra is therefore delivering all Bartec couplers with epoxy coating, giving them a distinctive green look.
Couplers are used in the raft and columns all over the different reservoirs as a way to reduce steel congestion and generate savings.
For more information about Dextra solutions and project in the Middle East, please contact our Dubai office.
Dextra involved in the expansion of Fujairah Port in 2007, supplying more than a thousand tons of marine tie bar systems for the construction of the new Oil Terminal 2 and South Breakwater Berths.
In 2017, Dextra took part in the service harbour construction project. The project includes the construction of the service harbor building, new quay walls, and marine works.
Marine tie bars totaling about 380 tons were provided for the anchoring of the quay walls. The high-performance grade 700 bars, which enable a higher degree of performance for comparatively smaller diameters, were chosen to ease transportation and installation at site.
For the new Service Harbour in the Port of Fujairah, two breakwaters are being built: the 800-meter-long northern breakwater and the 1.2-kilometer-long southern breakwater, which features varied rock grades.
Source of images: https://overseas-ast.com/projects/fujairah-port-service-harbour-marine-works-buildings/
Aberdeen Harbour is one of the oldest and busiest ports in the UK.
It serves as a hub for the marine operations of oil and gas industry in north-west Europe, offering links to 40 countries.
The expansion project of the new South Harbour aims to increase and diversify the existing capabilities. Combined with the current port, Aberdeen Harbour will soon become the largest port in Scotland in terms of berthage.
The Aberdeen Harbour expansion mainly involved dredging within Nigg Bay to construct two breakwaters and develop quayside on the north and west sides of the bay.
Dextra offered a convenient solution for concrete integrity testing of the 35-45m depth bored piles that support the harbour structure. Both 50 and 100mm tubes were used by the contractor: Dragados, with 100mm used for inclinometry and coring purpose.
After drilling a vertical hole into the soil, Sonitec sonic tubes were equipped with the reinforcement cages and lowered into the hole, the latter is then filled with concrete, and the sonic logging testing is subsequently performed.
Dextra Sonitec system is designed to facilitate the assembly and installation of long tube lengths in reinforcement cages with its enlarged bell-mouth that allows the seamless connection of the tubes. The system complies with ASTM D6760, the standard method for integrity testing by ultrasonic cross-hole testing.
This port expansion upscales opportunities for existing customers, and opens the door to new markets, future-proofing the harbour’s ability to support the economic prosperity of the city and region.
ソクナ港の拡張プロジェクトは、ベイシン 2 に 480 メートルの岸壁と 18 メートルの喫水を建設することで、世界貿易のダイナミクスを再構築しています。この事業はエジプトの海事能力を増幅するだけでなく、革新的な海洋インフラ ソリューションを提供するデクストラの役割にもスポットライトを当てています。
紅海に面するソクナ港は、スエズ運河に近いため、国際貿易の要となっています。ベイシン 2 の拡張は、急増する貿易需要に対応し、アジア、ヨーロッパ、アフリカ間の接続を最適化するための戦略的な動きです。
拡張の中心は、長さ 480 メートル、喫水 18 メートルを誇る印象的な岸壁にあります。デクストラは、DP ワールド ターミナルの建設に 265 トンの船舶用タイバー、グレード 700、およびボール ケージを提供することで、その専門知識を実証しました。これらのコンポーネントは、海洋環境によってもたらされる課題に直面した際の構造的完全性と耐久性を強化します。
The Reconstruction of Pak Kok Pier on Lamma Island is a project to reconstruct the existing pier located at the northern tip of Lamma Island in Hong Kong, including provision of ancillary facilities such as roof cover, lighting system, benches, and solar panels, etc. and environmental monitoring and mitigation measures.
Due to the primitive design of the Pier and the occasional rough sea condition, the berthing condition of the Pier is unsatisfactory, causing inconvenience to passengers, especially for kids and the elderly, when boarding and alighting. The project aims to improve the berthing condition.
Dextra delivered more than 600 meters of GFRP (Glass Fiber Reinforced Polymer) rebars in straight and bending shapes for the reinforcement of the ferry pier structure.
Dextra GFRP rebar is a corrosion-free alternative to steel rebar. The continuous exposure to seawater and contaminants made it the perfect solution to substitute traditional steel rebars.
Source of images: https://www.devb.gov.hk/filemanager/en/content_1044/20170813_07.html, https://www.ceddreport201519.gov.hk/en/projects-services-detail/portworks
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