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Category: Transport

Singapore Circle Line (CCL) – Stage 6

Posted on by Sir Gwi

Singapore Circle Line (CCL) – Stage 6

The Circle Line (CCL) is an underground Mass Rapid Transit (MRT) line in Singapore. The 35km, 30-station line runs from Dhoby Ghaut to Marina Bay in the Central Area to HarbourFront.

It is one of the world’s longest driverless rapid transit lines.

In 2013, the Circle Line stage 6 was announced, a 4km extension to finally close the circle of the CCL by connecting HarbourFront station to Marina Bay station.

Three additional stations are under construction and expected to be operational in 2025.

Well-known expertise and quality in concrete reinforcement solutions were necessary to tackle this project, and Dextra’s Bartec couplers were chosen for several parts of the Circle Line structure, including starter bars, slabs, and column joints.

By the end of the project, approximately 200,000 couplers will be delivered on site.

Moreover, Dextra provided 3,000m of Glass Fiber Reinforced Polymer (GFRP) rebars, that can boast some key benefits with respect to metal rebars: a lighter weight, no risk of corrosion, and a lower susceptibility to attract lightning strikes.

On top of that, Dextra was entrusted with the reinforcement of the concrete structure of the tunnels: 8 Astec Soft-Eyes were used to facilitate the penetration of the Tunnel Boring Machines (TBM) through diaphragm walls, thanks to their innovative cuttable GFRP structure.

Forest City Johor 森林城市

Posted on by Sir Gwi

Forest City Johor 森林城市

Forest City is a massive mixed-use urban development taking place in the Southern tip of Malaysia, in the Iskandar region, Johor. The development is taking place on reclaimed land just across the Johor Straight, in sight of Singapore.

The project, which will continue over the next decade, aims ultimately to create 300,000 residential units, hosting as many as 700,000 people, as well as numerous commercial buildings.

The Forest City project is expected to fuel the region’s economy, as well as Singapore, as light rail and road links will ultimately make the connection across the island state.

Dextra has been involved since the early phases of the project for the supply of its Groutec S precast solution. Groutec allow the swift connection of precast columns and panels, without the need of in situ joints, speeding up the construction project. For the Forest City Project, Groutec S couplers (compact models) were used to connect the panels making the residential towers shear walls.

The Forest City project is supported by the installation at site of several sets of Bartec threading equipment, which prepare the bars with threads in order to perform the connection with the top part of the Groutec S sleeve. The Dextra aftersales team also provided training and support in order to guarantee high production output during the project duration.

For more information about Dextra solutions in Asia, please contact our Bangkok office

AVE Palencia-Santander HSR Package 1 (Palencia – Palencia Norte) & Package 2 (Palencia Norte – Amusco)

Posted on by Sir Gwi

AVE Palencia-Santander high-speed rail project is a significant infrastructure undertaking aimed at connecting Palencia and Santander in Spain. This project involves the construction of extensive railway networks, viaducts, and bridges, underscoring the need for a strong and resilient foundation. Recognising the critical importance of ensuring the structural integrity of the concrete piles, the project management sought advanced testing methodologies.

Dextra played a pivotal role in ensuring the robustness of the project’s foundation by supplying Sonitec Crosshole Sonic Logging (CSL) testing tubes. These tubes were instrumental in conducting comprehensive structural integrity tests on the concrete piles of AVE Palencia-Santander USR Package 1 (Palencia – Palencia Norte) and Package 2 (Palencia Norte – Amusco).

Crosshole Sonic Logging is a non-destructive testing method widely employed to assess the quality and integrity of concrete piles. It involves the use of sonic waves transmitted through the concrete between two access tubes, allowing engineers to evaluate the material’s properties and identify potential defects.

Sonitec tubes are specially designed for Crosshole Sonic Logging, ensuring precise and reliable data collection during structural integrity tests. These tubes are embedded in the concrete piles during construction, providing access points for the sonic wave transmission.

High-Speed Rail Access Channel in Valencia – Phase 1

Posted on by Sir Gwi

High Speed Rail Access Channel in Valencia – Phase 1

The High-Speed Rail Access Channel project in Valencia represents a transformative initiative aimed at enhancing connectivity, bolstering economic growth, and fostering sustainable development within the region and beyond. As such, ensuring the reliability and longevity of its infrastructure components is paramount. This is where Dextra steps in with its cutting-edge solutions.

The utilization of Sonitec tubes for crosshole sonic logging (CSL) testing exemplifies Dextra’s commitment to pioneering technologies that optimize construction processes and elevate industry standards. CSL testing is a non-destructive technique utilized to assess the integrity of deep foundation elements such as drilled shafts and bored piles. By transmitting ultrasonic pulses between pairs of probes embedded within concrete piles, CSL testing enables engineers to detect defects, voids, or anomalies that could compromise structural stability.

In the context of the High-Speed Rail Access Channel project, Dextra’s provision of 60,000 linear meters of Sonitec tubes empower construction teams with a robust methodology for evaluating the quality and integrity of concrete piles. This comprehensive testing approach not only meets regulatory requirements but also instills confidence in the durability and performance of the infrastructure, safeguarding against potential risks and ensuring compliance with stringent safety standards.

The adoption of innovative solutions like Sonitec tubes underscores the evolution of construction practices towards greater efficiency, accuracy, and sustainability. By enabling early detection of potential issues and facilitating timely remediation measures, Dextra’s technology not only enhances project outcomes but also minimizes disruptions, reduces costs, and enhances overall project resilience.

As the High-Speed Rail Access Channel in Valencia moves forward, Dextra’s contribution serves as a testament to the power of collaboration and innovation in shaping the future of infrastructure. By harnessing the latest technologies and best practices, Dextra and its partners are not only building bridges and tunnels, but forging pathways to prosperity, connectivity, and sustainable development for generations to come.