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Tension Rod Earns European Technical Assessment (ETA)

发表于 通过 Kansuda Visesthanakorn

Dextra is proud to announce a significant achievement for our Tension Rod System: the successful attainment of the European Technical Assessment (ETA-24/1184). This milestone underscores our commitment to technical excellence, reliability, and innovation in the construction industry.

A Rigorous Evaluation Process

The European Technical Assessment (ETA) is a prestigious voluntary certification issued under the framework of the European Organisation for Technical Assessment (EOTA). In this case, the certification was granted by the Deutsche Institut für Bautechnik (DIBt), a leading authority in the field.

Achieving this certification involved a comprehensive and meticulous evaluation process conducted by the highly regarded engineering firm, IPU Ingenieurgesellschaft mbH. As part of the assessment, extensive full-scale testing was carried out at the Karlsruhe Institute of Technology (KIT), one of Europe’s foremost research institutions. These tests confirmed that the Dextra Tension Rod System meets the stringent requirements of EAD 200032-00-0602. The results validated the system’s exceptional reliability, performance, and compliance with European standards.

Setting New Benchmarks in Construction Solutions

The Dextra Tension Rod System is designed to address the demanding needs of modern construction projects. Its certification is not only a testament to its robust engineering but also an assurance to our clients that they are investing in a product that meets the highest standards of quality and safety.

This accomplishment highlights Dextra’s ongoing commitment to providing innovative and high-performance solutions that empower engineers, architects, and builders worldwide. By continuously raising the bar, we aim to contribute to the creation of stronger, safer, and more efficient structures across the globe.

 

A Commitment to Technical Excellence

Securing the ETA-24/1184 is a reflection of Dextra’s dedication to advancing the construction industry through reliable and cutting-edge products. Our Tension Rod System exemplifies our mission to deliver solutions that combine innovation, durability, and performance.

New Pamban Bridge, India

发表于 通过 Kansuda Visesthanakorn
 

New Pamban Bridge, India

Dextra is proud to support the construction of the New Pamban Bridge in Ramanathapuram, Tamil Nadu, India, by supplying critical structural components for the steel tower and lifting mechanism.

For this landmark project, Dextra provided:

  • 244 sets of fully-threaded (FT) bars (930/1080 grade, 32mm diameter, in lengths of 2,700mm and 3,400mm) along with swivel plates, nuts, end caps, and tube assembly for securing the steel tower/pylon.
  • 24 sets of tension rods (carbon steel M48, grade 700, in lengths of 3,450mm and 3,850mm) for the counterweight position, which are connected to steel wire ropes to lift the bridge vertically.

The New Pamban Bridge is India’s first vertical lift railway sea bridge, enhancing connectivity to Rameswaram Island. Dextra’s high-performance tensioning and post-tensioning solutions ensure durability, stability, and precise load handling, contributing to the bridge’s reliable and efficient operation.

Triumph Motorcycles Office and Factory, Thailand

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Triumph Motorcycles Office and Factory, Thailand

 

Dextra is proud to have played a key role in the construction of the Triumph Motorcycles Office & Factory in Chonburi, Thailand, by supplying high-performance rebar connection solutions for the precast structure.

For this project, Dextra provided 格鲁特克S 32mm couplers and 巴特克 standard and weldable couplers (diameter 16-32mm), supporting the reinforcement of precast columns. The structural system combined Groutec and Peikko’s Column Shoe, a hybrid approach that enhances construction efficiency, structural integrity, and installation speed.

By integrating Dextra’s advanced rebar splicing solutions, the project benefited from high-strength, reliable connections, reducing on-site labor and ensuring seamless assembly of the precast components. This contribution aligns with Dextra’s commitment to innovative, high-quality construction solutions that meet the demands of modern infrastructure.

 

Sustainability of Rebar Couplers: Greener Future for Construction

发表于 通过 Kansuda Visesthanakorn

In the construction industry, sustainability is becoming an increasingly critical consideration. One area where significant environmental benefits can be achieved is in the use of rebar couplers instead of traditional overlapping methods. This article explores the sustainability of rebar couplers, highlighting their impact on CO2 emissions, cost savings, waste reduction, and transportation efficiency.

 

Reducing CO2 Emissions

Traditional overlapping methods require additional lengths of rebar to create the necessary overlap, leading to increased material usage and higher CO2 emissions. In contrast, rebar couplers eliminate the need for overlapping, directly reducing the amount of rebar required. Studies have shown that using rebar couplers can reduce CO2 emissions by approximately 90% per connection compared to traditional overlap methods. This reduction is achieved through decreased material production and less energy-intensive manufacturing processes.

 

Cost Savings in Raw Material

The use of rebar couplers translates to significant cost savings in raw materials. By eliminating the overlap, contractors can purchase less rebar, which not only reduces costs but also minimizes the environmental impact associated with steel production. Research indicates that the adoption of rebar couplers can lead to a reduction in purchased rebar usage by up to 17.95% (Optimization of Rebar Usage and Sustainability Based on Special-Length Priority: A Case Study of Mechanical Couplers in Diaphragm Walls (mdpi.com). This decrease in material demand contributes to lower overall project costs and supports more sustainable construction practices.

Waste Reduction

One of the key advantages of rebar couplers is their ability to reduce waste. Traditional overlapping methods often result in excess rebar that must be cut and discarded, contributing to construction waste. Rebar couplers, on the other hand, allow for precise connections without the need for cutting, thereby minimizing waste. This approach not only conserves resources but also reduces the environmental footprint of construction projects.

 

Efficient Transportation

Transportation of rebar is another area where rebar couplers offer sustainability benefits. With traditional overlapping methods, the increased volume of rebar required leads to more frequent and larger shipments, increasing fuel consumption and CO2 emissions. Rebar couplers reduce the overall volume of rebar needed, leading to fewer shipments and lower transportation-related emissions. This efficiency in logistics further enhances the sustainability of construction projects.

 

Transparency and Accountability with Dextra’s EPDs

Dextra has taken significant steps towards sustainability by introducing Environmental Product Declarations (EPDs) for our rebar couplers. EPDs provide transparent and verified information about the environmental impact of products throughout their lifecycle. By offering EPDs for our rebar couplers, Dextra demonstrates a commitment to transparency and accountability in building a more sustainable future.

These EPDs cover the full range of Dextra’s rebar couplers, including Bartec®, Griptec®, and Rolltec®, and detail the environmental performance of these products from raw material extraction to end-of-life disposal. This level of transparency allows contractors to make informed decisions based on reliable data, ensuring that their choice of rebar couplers aligns with their sustainability goals.

 

Why Contractors Must Make the Switch

For contractors, the decision to switch from traditional overlapping methods to rebar couplers should be driven by both structural and environmental considerations. Rebar couplers not only provide a reliable and robust connection but also offer significant sustainability advantages.

 

In conclusion, the use of rebar couplers presents a compelling case for contractors seeking to enhance the sustainability of their construction projects. By reducing CO2 emissions, cutting costs, minimizing waste, and improving transportation efficiency, rebar couplers offer a greener and more cost-effective alternative to traditional overlapping methods. Making the switch not only supports environmental goals but also contributes to the long-term viability and success of construction projects.

Innovating Sustainable Construction: GFRP Rebar in Sea Sand and Seawater Concrete

发表于 通过 Kansuda Visesthanakorn

In today’s world, where sustainability is crucial, Dextra is at the forefront of innovative construction solutions. By promoting the use of sea sand and seawater in concrete, Dextra not only addresses resource scarcity but also enhances the durability and resilience of structures in marine environments. However, the real breakthrough lies in the use of Glass Fibre Reinforced Polymer (GFRP) rebar, which is essential for creating reinforced concrete by solving the corrosion issue of the sea salts.

The Need for Sustainable Solutions

The construction and building industry are a significant contributor to greenhouse gas emissions, accounting for approximately 37% of global emissions. As water-stressed regions face increasing challenges, the use of seawater and sea sand in concrete presents a viable alternative to traditional materials. This shift not only reduces the environmental footprint of construction projects but also mitigates the rising costs associated with freshwater and river sand.

The Challenge of Reinforced Concrete in marine applications

While the integration of sea sand and seawater into concrete is a significant advancement, the true challenge is in reinforcing this concrete effectively. Traditional steel reinforcement is prone to corrosion, especially in chloride-rich environments, which can lead to structural failures over time. GFRP rebar emerges as the keystone of this innovation, offering a sustainable and durable solution that outperforms conventional materials.

Cost-Effectiveness and Lifecycle Benefits

Dextra’s GFRP rebar not only matches the initial construction costs of traditional methods but also provides substantial lifecycle savings. Its resistance to corrosion means lower maintenance costs and longer service life, making it a more economical choice in the long run. This is particularly important in coastal regions where the harsh environment can significantly shorten the lifespan of traditional reinforced concrete.

The key ingredient in seawater concrete is the mineral admixture (granulated blast furnace slag, fly ash, or silica fume), which, when combined with lime and seawater, undergoes a reaction to create a durable and strong material. Some chemical admixtures such as Superplasticizers can also be added to enhance the concrete properties.

Dextra has emerged as the preferred partner to provide the needed GFRP reinforcement rebars of the sea sand and seawater concrete for the most important stakeholders who want to keep their advance in this subject. Additionally, Dextra ensures the highest product standards through rigorous in-house laboratory testing and a comprehensive traceability system, which is why the Hong Kong Polytechnic University has entrusted Dextra with their GFRP rebar requirements.

(Graph: Life cycle cost analysis of structural concrete using seawater, recycled concrete aggregate, and GFRP reinforcement

Younis, Ebead, Judd – Department of Civil and Architectural Engineering, Qatar University – Published in “Construction and Building Materials” (2018))

(Diagram: Life cycle cost analysis of structural concrete using seawater, recycled concrete aggregate, and GFRP reinforcement

Younis, Ebead, Judd – Department of Civil and Architectural Engineering, Qatar University – Published in “Construction and Building Materials” (2018))

SSSW-Picture-9

ACI Committee 243, chaired by Antonio Nanni, focuses on developing guidelines for concrete made with brackish, saline, and brine water, as well as sea aggregates. This committee aims to enhance sustainability in construction by promoting the use of alternative materials that conserve fresh water and natural aggregates.

Antonio Nanni, the immediate past president of the American Concrete Institute (ACI), and chair of ACI committee 243, emphasizes the importance of GFRP in modern infrastructure. He states, “The adoption of GFRP rebars is not just a trend, it’s a necessary evolution in our approach to sustainable construction. Composite reinforcement offers significant advantages over traditional black steel, particularly in environments where corrosion is a concern. GFRP can make several applications of reinforced concrete more sustainable in terms of durability, cost and environmental impact.”

Nanni notes, “I commend Dextra’s commitment to quality and innovation in GFRP manufacturing. Their products meet rigorous performance standards and provide a lightweight solution that enhances structural efficiency.” With a performance-to-weight ratio up to three times that of steel, Dextra’s GFRP rebars are ideal for projects requiring both strength and sustainability.

ANTONIO NANNI

Professor, Department of Civil- and Architectural Engineering

University of Miami, United States. 

Pierre Hofmann

General Manager – GEOTEC Product Line

德克斯达集团

Dextra’s commitment to sustainability is further exemplified by Pierre Hofmann’s appointment to the American Concrete Institute (ACI) Committee 243 on Seawater Concrete.

His expertise will contribute to developing guidelines and standards that promote the use of seawater concrete in construction projects worldwide.

SSSW-Picture-6-2

(Picture: Coastal Enhancement Works in Hong Kong)

Dextra Group is not just a participant in the construction industry, it is a leader in sustainable practices. By embracing innovative materials like GFRP Rebar, sea sand and seawater concrete, Dextra is paving the way for a more sustainable future in construction. As research continues and new projects emerge, Dextra remains dedicated to finding better solutions that benefit both the environment and the industry.

SSSW Picture-8

Dextra Achieves ISO 19443 Nuclear Certification in India and Thailand

发表于 通过 Kansuda Visesthanakorn

We are proud to announce that Dextra’s manufacturing plants in India have successfully obtained the ISO 19443 Nuclear Certification for the first time, while our Thailand plants have achieved a successful renewal—both audited and certified by Bureau Veritas. This achievement underscores our commitment to delivering the highest quality and safety standards for the nuclear energy sector worldwide.

What is ISO 19443?

ISO 19443 is a nuclear-specific quality management standard that builds upon ISO 9001, focusing on the unique requirements of the nuclear energy sector. It ensures that organizations like ours consistently provide products and services that meet stringent nuclear safety standards.

 

Why This Certification Matters

Achieving ISO 19443 certification means that Dextra is recognized for its robust quality management systems and its dedication to nuclear safety. This certification is not just a badge of honor; it is a commitment to our customers that we prioritize their safety and satisfaction.

Benefits for Our Customers

  1. Enhanced Safety and Reliability: Our products meet the highest safety standards, ensuring reliability in critical nuclear applications.
  2. Quality Assurance: The certificate guarantees that our manufacturing processes are continuously monitored and improved, providing our customers with the best quality products.
  3. 可持续发展: By adhering to ISO 19443 standards, we contribute to sustainable practices within the nuclear industry, aligning with global efforts to promote environmental responsibility.

 

A Commitment to Excellence

At Dextra, we believe in leading by example. Being the only rebar coupler manufacturer with ISO 19443 certification sets us apart in the industry. It reflects our dedication to excellence and our proactive approach to meeting the evolving needs of the nuclear sector.

We extend our gratitude to Bureau Veritas for their rigorous audit process and to our incredible teams in Thailand and India for their hard work and dedication. This achievement is a collective effort, and we are excited to continue delivering unparalleled quality and safety to our customers.

The Evolution of Precast Construction: Couplers vs. Corrugated Tubes

发表于 通过 Kansuda Visesthanakorn
Precast Couplers vs. Traditional Corrugated Tubes

Precast Couplers vs. Traditional Corrugated Tubes

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Read it on the CPi’s e-magazine (page 172-174)

Rail Baltica Bridge Over Neris River, Lithuania

发表于 通过 Kansuda Visesthanakorn
 

Rail Baltica Bridge over the Neris River, Lithuania

 

The construction of the Rail Baltica Bridge over the Neris River near Jonava marks a significant milestone in the region’s railway infrastructure. Stretching 1.5 kilometers, this bridge will not only be the longest in Lithuania but also in the entire Baltic States. Designed with a variety of spans—including cast-in-place from a traveler, cast-in-place supported on falsework, and span-by-span cantilever—the project showcases advanced engineering techniques and a commitment to environmental protection.

Dextra plays a vital role in guaranteeing the structural integrity of the bridge by supplying 索尼泰克 crosshole sonic logging (CSL) testing tubes for the testing of piles. CSL testing is a crucial procedure that provides real-time insights into the quality and soundness of the concrete in the piles, ensuring they meet stringent safety standards. This advanced technology enables engineers to detect anomalies and assess the quality of the concrete, ensuring the long-term durability of the bridge.

指某东西的用途 索尼泰克 is particularly important given the engineering complexity of the bridge and the environmental considerations surrounding its construction. By integrating this technology, Dextra helps to uphold the highest standards of construction and environmental stewardship.

The Rail Baltica project represents the largest railway infrastructure development in the history of the Baltic States. Once completed, it will provide an electrified double-track European gauge railway line connecting major cities such as Warsaw, Kaunas, Riga, and Tallinn. This ambitious project will span a total of 870 kilometers, with 392 kilometers in Lithuania alone.

With the Rail Baltica Bridge over the Neris River, Dextra is proud to contribute to a landmark project that promises to enhance regional connectivity, promote sustainable transport solutions, and respect the delicate balance between development and environmental conservation. As construction progresses, the bridge will stand as a testament to innovative engineering and collaboration, paving the way for a brighter and more connected future in the Baltics.

Port of Neom, Oxagon, Saudi Arabia

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Port of Neom, Oxagon Port Stage 1 & 2, Saudi Arabia

 
 

As part of Saudi Arabia’s ambitious NEOM development, the Port of NEOM project, also known as the “Oxagon Port Stage 1 & Stage 2,” is set to become the world’s largest floating industrial complex. Located on the Red Sea, the Port of NEOM is poised to revolutionize the region with its innovative design and focus on sustainable development.

Dextra has been selected by Six Construct Saudi and MBL (Oxagon Stage 1) and Saudi Archirodon (Oxagon Stage 2) to provide high-performance solutions for this vital infrastructure. We are supplying 7,800 tons of 船用拉杆 in various sizes, all in Grade 500. These tie bars, paired with specialized accessories, are engineered for maximum durability and performance, essential for ensuring the 7.5 km long quay wall’s stability and longevity in the challenging marine conditions.

The Importance of Marine Tie Bars

The quay wall forms the backbone of the new port infrastructure, enabling vessel docking, cargo handling, and long-term maritime operations. Marine tie bars are critical to the structural integrity of this massive structure.

Dextra’s Marine Tie Bars, manufactured to the highest standards, are key to ensuring the required lifetime of the marine structure, offering long-lasting support and resilience.

A Partnership for the Future

Dextra’s involvement in the Port of NEOM project underscores our commitment to delivering cutting-edge engineering solutions for large-scale infrastructure developments worldwide. As Saudi Arabia progresses toward its Vision 2030, Dextra’s expertise and high-performance products are playing a pivotal role in shaping the future of this transformative region.

Industrial Bridge, Chile

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Industrial Bridge, Chile

 

Dextra’s engineering expertise and innovative products played a pivotal role in the construction of the Industrial Bridge in Chile. As part of the project, Dextra supplied its 罗尔泰克 mechanical splice system, ensuring robust and reliable rebar connections. Additionally, 有头酒吧 were provided to enhance anchorage performance, a critical requirement for the bridge’s structural integrity.

The project also utilized 索尼泰克 crosshole sonic logging (CSL) testing tubes, facilitating thorough integrity testing of concrete piles, ensuring long-term safety and performance. These advanced solutions reflect Dextra’s commitment to supporting complex infrastructure projects with high-quality, tailored products.

The Industrial Bridge stands as a testament to modern engineering and showcases the critical role Dextra’s solutions play in shaping resilient and efficient infrastructure worldwide.