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Chennai Metro Phase 2, India

 

Chennai Metro Phase 2, India

 
 

The Chennai Metro Phase 2 project is set to redefine urban transportation in one of India’s largest cities, promising enhanced connectivity and efficiency. Playing a pivotal role in the success of this ambitious project, Dextra has supplied an array of cutting-edge construction solutions to meet the project’s demanding structural and safety requirements.

Ensuring Robust Connections with Bartec Rebar Couplers

Dextra supplied nearly 2 million Bartec rebar couplers, essential for creating secure connections across various structural components. These couplers have been utilized extensively in the connections for diaphragm wall (d-wall) caging and slabs, pile cages, piers, and pier caps. By ensuring high-strength rebar connections, Bartec couplers contribute to the overall durability and resilience of the metro structure, particularly important in a densely populated and busy urban environment like Chennai.

Precision Testing with Sonitec CSL Testing Tubes

To ensure the highest standards of concrete integrity, Dextra provided over 80,000 Sonitec crosshole sonic logging (CSL) testing tubes. These tubes facilitate rigorous testing of piles and d-walls, helping to identify potential flaws within the concrete structure. This meticulous testing process enables project engineers to detect and address any irregularities, safeguarding the integrity and longevity of the metro’s foundations.

Supporting Complex Structures with CR Bar 1080 Post-Tensioning Bars

For the support of double-decker piers and the pre-tensioning of U-girders, Dextra supplied 68 CR Bar 1080 post-tensioning bars. These high-strength, fully threaded bars are critical in handling the complex loads and stresses that the elevated sections of the metro will endure. The inclusion of these bars ensures that the metro can withstand heavy traffic and operational demands over time, contributing to the long-term safety and functionality of the infrastructure.

Facilitating Tunnel Boring with GFRP Soft-Eyes

In the tunneling phase, Dextra also provided 42 GFRP soft-eyes, specifically designed for tunnel boring machine (TBM) operations. These soft-eyes allow TBMs to pass through concrete walls smoothly, ensuring safe and efficient tunneling while reducing the risk of structural damage. GFRP’s non-corrosive properties make it an ideal choice for underground construction, where durability and performance are paramount.

Building a Safer, Stronger Future

Dextra’s commitment to supplying top-tier construction materials and solutions underscores its dedication to the Chennai Metro Phase 2 project. As the metro takes shape, Dextra’s innovations contribute not only to the project’s success but also to the future of Chennai’s urban infrastructure, setting new standards in construction excellence and sustainability.

Bartec, Fortec, Rolltec Headed Bars Achieve CE Marking

Dextra’s Bartec, Fortec, and Rolltec Headed Bars Achieve CE Marking—A Milestone in Engineering Excellence

Dextra is proud to announce a significant milestone in our journey of delivering high-quality construction solutions: our Bartec, Fortec, and Rolltec large headed bars, ranging from 16 to 40mm in diameter, have been assessed and granted European Technical Assessments (ETA) and are now officially CE marked. This achievement is based on the stringent regulations under EAD 160012-01-0301, edition April 2021, certified by Kiwa, one of the largest certification bodies in the world.

CE marking signifies our products meet the essential requirements for headed reinforcing steel bar within the European Economic Area. It also reinforces our commitment to providing safe, reliable, and high-performance solutions in the construction industry.

To ensure that our products meet the highest standards, rigorous testing was conducted by Concrefy; the most recognized and experienced laboratory in the Netherlands, in accordance with ISO 15698. These tests verified the mechanical properties, durability, and overall performance of our headed bars, ensuring they comply with stringent European standards.

A First Step Toward a Larger Vision

This achievement marks the beginning of an exciting new chapter for Dextra. These are our first products to receive CE marking, and we are already working on expanding this certification to more of our product range. Our goal is to continue delivering innovative solutions that meet and exceed industry standards globally.

CE marking is not just a badge of compliance; it is a testament to our unwavering dedication to engineering excellence, quality, and customer satisfaction. As we continue to push the boundaries of what is possible in the construction sector, we are committed to setting new benchmarks in product performance and safety.

Stay tuned as we bring more CE-marked innovations to the market, driving the construction industry forward with cutting-edge solutions designed to last.

À propos de Dextra

Dextra is a leading provider of engineered construction products and solutions, specializing in high-performance rebar coupler systems and other advanced engineered construction technologies. With a global presence and a reputation for quality, Dextra continues to lead the industry in innovation and customer satisfaction.

Bartec-Fortec Headed bars - ETA-24-0219

Bartec-Fortec Headed bars - ETA-24-0219

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Rolltec Headed bars - ETA-24-0268

Rolltec Headed bars - ETA-24-0268

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Mumbai Metro Line 2B, India

 

Mumbai Metro Line 2B, India

 
 

Le Mumbai Metro Line 2B, an essential link connecting several key areas of the city, is a significant infrastructure project aimed at alleviating Mumbai’s traffic congestion and providing efficient public transport. As part of this ambitious project, Dextra has made a valuable contribution, supplying engineered construction materials to ensure the durability and reliability of the structure.

CR Bar 1080 for U-Girder Stressing and Pre-Tensioning

One of the critical components of the project is the elevated section of the metro, which relies on U-girders for support. To enhance the strength and resilience of these U-girders, Dextra supplied its innovative CR Bar 1080 cold-rolled fully threaded post-tensioning bars. These bars, with a diameter of 75mm, are specifically designed to withstand high stress during both U-girder stressing and pre-tensioning operations. The hexagonal nuts provided as part of the system allow for secure fastening and easy adjustment, ensuring precise tensioning to meet the structural demands.

 

Fully Threaded (FT) Bar for Segment Stitching and Temporary Stressing

For segment stitching and temporary stressing operations during the construction of the metro viaduct, Dextra supplied its fully threaded (FT) bars. These bars provide secure connections between precast segments and offer flexibility for adjustments during the stitching process, ensuring that the structural alignment is perfect before the segments are permanently joined.

Unitec Couplers for Rebar Connections

In addition, Dextra supplied Unitec couplers, designed for connecting rebars at construction sites without the need for pre-threading. These couplers offer a convenient and robust solution, allowing for seamless connection of two rebars, ensuring structural continuity and strength without delays in the construction process.

Sonitec CSL Testing Tubes for Concrete Pile Integrity

In addition to supplying post-tensioning bars, Dextra also provided Sonitec Crosshole Sonic Logging (CSL) testing tubes for the integrity testing of the concrete piles supporting the metro structures. These tubes enable highly accurate non-destructive testing of the concrete, allowing engineers to detect any potential flaws or weaknesses in the piles. This testing is vital for ensuring the piles meet the necessary strength and quality standards, thereby supporting the entire metro system safely and effectively.

Enhancing Metro Connectivity with Quality Solutions

As the Mumbai Metro Line 2B progresses towards completion, Dextra’s contributions to the project highlight its role in providing advanced engineering solutions for infrastructure development. The combination of Barre CR 1080 for post-tensioning, fully threaded bars for segment stitching, Unitec couplers for rebar connection, and Sonitec CSL testing tubes for pile integrity showcases Dextra’s commitment to quality, innovation, and safety in major construction projects.

By contributing to this key metro line, Dextra is playing a part in shaping the future of urban mobility in Mumbai, ensuring that the metro system will be reliable and capable of supporting the city’s growing transportation needs for years to come.

Tension Rods & PT Bars EPD Verified

Dextra’s tension rods et post-tensioning bars are now EPD (Environmental Product Declaration) verified and officially listed on the EPD Hub website! This recognition highlights our commitment to environmental performance and sustainable solutions.

Our previously approved solutions include:

✅ Coupleurs de barres d'armature

✅ GFRP Rebars

✅ Barres de liaison marines

✅ Steel Ground Anchors

✅ Steel Self-Drilling Rock-Bolts

✅ Steel Combination Bolts

✅ Sonitec

Stay tuned as we work on EPDs for even more of our solutions!

EPD Report for Tension Rods

EPD Report for Tension Rods

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EPD Report for Post-Tensioning Bars

EPD Report for Post-Tensioning Bars

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