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Etiqueta: concretereinforcement

Streamline Your Designs with PC Headed Bar CAD/BIM Tools!

Publicado en por Kansuda Visesthanakorn

Dextra’s Pressed Connection (PC) Headed Bar is now available as CAD/BIM tools for Tekla, Revit, AutoCAD, and Allplan! 🎉

Easily integrate PC Headed Bars into your designs with precision and efficiency. Download now and streamline your workflow!

 

Get your files today:

📥AutoCAD tool package

📥Revit

📥Tekla

PC Headed Bars are engineered for anchoring shear and shear load-bearing steels, offering a superior alternative to bends and hooks. They make transverse reinforcement installation faster and less tiring, especially in thick structures or hard-to-access areas. Plus, they eliminate the need for on-site bending, ensuring compliance with required bend diameters.

Learn more about PC Headed Bar
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Collaboration Over Competition: The Power of the Supreme Solution for Precast Hybrid Connection

Publicado en por Kansuda Visesthanakorn

In today’s rapidly evolving construction industry, collaboration is key to delivering cutting-edge solutions that address the growing demands for efficiency, safety, and sustainability. This philosophy is at the heart of the collaboration between Dextra and Peikko, two global leaders who have come together to create a hybrid precast connection system that combines the best of both worlds: Dextra’s Groutec Couplers y Peikko’s Column Shoes.

This innovative system was successfully implemented in the Triumph Motorcycle Office and Factory project in Thailand, showcasing how collaboration can drive excellence.

The Hybrid Advantage

The hybrid precast system merges the strengths of column shoes and grouted sleeves to maintain the continuity of reinforcement in precast structures. This system has proven especially valuable in seismic zones and heavily reinforced elements.

Column shoes y Groutec couplers are well-known products used to create connections between precast columns. A combination of the two – referred to as ‘hybrid precast connection’ has been utilized in several markets, particularly those with seismic requirements.

From a structural viewpoint, column shoes y Groutec couplers are both designed to maintain the continuity of reinforcement through the joints of precast elements. In the case of heavily reinforced elements, it might be challenging to accommodate all necessary column shoes within the column cross-section. In such cases, combining column shoes with Groutec couplers may prove to be a cost-effective alternative.

With this solution, column shoes are intended to secure the stability of the column during the erection stage, while Groutec couplers complement the column shoes by transferring loads applied to the structure in the final stage. The term ‘erection stage’ refers to the stage when the joint has not been grouted, and ‘final stage’ refers to when the joint is fully grouted and hardened.

Column shoes enable precast columns to be erected without props or braces, which improves the speed of erection and allows for other construction activities to proceed unimpeded, as braces and props do not obstruct corridors, thus ensuring the continuity of the construction process without distraction. Groutec ensures rebar continuity at the “final stage” of erection.

Key Benefits of the System:

  • Faster Installation: Columns were installed without props or braces, reducing the installation time significantly.
  • Enhanced Safety: Eliminating bracing minimized site hazards.
  • Neat Finish: The method ensured a clean, professional result with no need for additional tidying.
  • Cost-Effective: Fewer materials and faster processes saved time and money. Groutec contributes reliable connections while saving costs on material and labor.


Triumph Motorcycles Office and Factory: A Case Study in Success

Completed in December 2024, the Triumph Motorcycle Office and Factory spans an impressive 89,077 sq.m and features 128 precast columns installed in a record-breaking time. Dextra and Peikko’s hybrid solution played a critical role in achieving these results.

This collaboration enabled Thai Obayashi, the project’s contractor, to achieve exceptional speed, safety, and quality.

 

A Future Built on Collaboration

El Triumph Motorcycles Office and Factory project exemplifies what can be achieved when industry leaders combine their strengths. As Dextra and Peikko, we believe that partnerships like ours are the future of construction innovation. Together, we can deliver solutions that exceed expectations and set new standards for the industry.

Let’s continue to lead through collaboration, making the construction industry stronger, safer, and more efficient for all.

Environmental Strategy: Aligning with the 5 Elements for a Sustainable Future

Publicado en por Kansuda Visesthanakorn

At Dextra, we take a holistic approach to environmental responsibility, drawing inspiration from the five elements—Fire, Water, Earth, Air, and Wood. This comprehensive strategy ensures that every aspect of our operations aligns with our commitment to sustainability, benefiting both our customers and the planet. Here’s how each element plays a role in our environmental initiatives and why this is important for our customers.

 

  1. Fire: Reducing Carbon Emissions through Energy Management

Our “Carbon Footprint for Organization” (CFO) program is a crucial step toward understanding and reducing our carbon emissions. By closely monitoring our electricity consumption, we aim to identify the primary contributors to our carbon footprint and focus on strategies to reduce energy use across our operations.

 

Customer Benefits:

  • Low-Carbon Products: As we reduce our carbon footprint, customers gain access to products with lower embedded emissions, supporting their own sustainability goals.
  • Cost Efficiency: Reducing energy use contributes to cost savings, which can help make our products more competitive while enhancing value for our customers.

 

  1. Water: Autonomous Water Treatment Solutions

Dextra is fully autonomous in water treatment, thanks to the advanced water treatment plants installed at our factories in Thailand and India. This ensures that all water used in our production processes is treated and reused where possible, minimizing waste and reducing our impact on local water resources.

 

Customer Benefits:

  • Resource Responsibility: By minimizing our impact on water resources, we provide customers with products manufactured using responsible water practices, aligning with sustainable supply chain requirements.
  • Environmental Assurance: Our commitment to water treatment supports environmentally sensitive projects, ensuring customers can trust our commitment to preserving natural resources.

 

 

  1. Earth: Integrated Waste Sorting Facilities

In Thailand, we have integrated our own waste sorting facility to manage production waste responsibly. This facility allows us to sort, recycle, and properly dispose of waste materials, minimizing landfill contributions and enhancing our waste management practices.

 

Customer Benefits:

  • Eco-Conscious Sourcing: Dextra’s waste sorting practices mean customers are sourcing products from a company that prioritizes responsible waste management, supporting their goals of sustainable procurement.
  • Reduction in Environmental Impact: Proper waste sorting reduces environmental pollution and reinforces a circular economy, adding value to customers looking to minimize their environmental footprint.

 

  1. Air: Emissions Control and Quality Standards

While not explicitly listed in the details above, “Air” is a fundamental part of Dextra’s strategy. By implementing stringent emissions control measures and adopting cleaner production processes, we ensure that our operations minimize air pollution and improve air quality around our facilities.

 

Customer Benefits:

  • Health and Safety: Reduced emissions contribute to cleaner air quality, benefiting local communities and providing a safer environment for our workforce.
  • Alignment with Green Standards: For customers aiming to meet international green building and environmental standards, our emissions control efforts ensure that Dextra products align with these rigorous requirements.

 

  1. Wood: Reforestation Efforts to Combat Deforestation

Dextra is actively involved in reforestation initiatives to combat deforestation. We regularly participate in tree-planting programs, helping restore natural habitats and reduce the carbon footprint through enhanced carbon sequestration.

 

Customer Benefits:

  • Carbon Offset and Biodiversity: Our reforestation efforts support biodiversity and provide a natural offset for carbon emissions, helping customers align with biodiversity goals and nature-based solutions.
  • Commitment to Sustainability: Customers benefit from partnering with a company that supports global efforts to fight deforestation, adding social and environmental value to their own sustainability programs.

 

ESG-5-Elements

 

Why Dextra’s Holistic Approach Matters for Our Customers

Our five-element environmental strategy goes beyond individual initiatives to create a comprehensive, responsible approach that meets today’s high sustainability standards. For our customers, this approach provides a range of valuable benefits:

 

  • Enhanced Brand Value: Partnering with Dextra means choosing a supplier with a firm commitment to environmental responsibility, which can enhance the sustainability credentials of our customers.
  • Alignment with Global Standards: Our holistic environmental strategy aligns with key global sustainability standards, providing customers with products that meet increasingly rigorous environmental and social expectations.
  • Trusted, Sustainable Products: By integrating these five elements into our operations, we ensure that our products are made responsibly and transparently, giving our customers confidence in the quality and sustainability of the solutions we offer.

 

We believe that our holistic environmental strategy benefits not only our company but also our customers and the planet. By aligning our operations with the elements of Fire, Water, Earth, Air, and Wood, we are committed to building a sustainable future together.

Sustainability of Rebar Couplers: Greener Future for Construction

Publicado en por 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

Publicado en por 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

grupo dextra

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

The Evolution of Precast Construction: Couplers vs. Corrugated Tubes

Publicado en por Kansuda Visesthanakorn
Precast Couplers vs. Traditional Corrugated Tubes

Precast Couplers vs. Traditional Corrugated Tubes

No se puede mostrar el archivo PDF. Descargar en cambio.
Download Groutec brochure

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

Industrial Bridge, Chile

Publicado en por Kansuda Visesthanakorn
 

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 Rolltec mechanical splice system, ensuring robust and reliable rebar connections. Additionally, barras con cabeza were provided to enhance anchorage performance, a critical requirement for the bridge’s structural integrity.

The project also utilized Sonitec 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.

Wynn Al Marjan Island, UAE

Publicado en por Kansuda Visesthanakorn
 

Wynn Al Marjan Island, UAE

 

The Wynn Al Marjan Island, located in Ras Al Khaimah, United Arab Emirates, is set to be an iconic luxury destination, marking Wynn’s first foray into the Middle East. This spectacular development will feature a world-class hotel, upscale dining, entertainment venues, and extensive leisure facilities, all nestled along the pristine shores of the Arabian Gulf. With its signature blend of elegance and grandeur, the Wynn aims to offer an unparalleled experience that combines luxury, relaxation, and entertainment for visitors from around the globe.

Dextra has made a substantial contribution to the construction by supplying 350,000 bartec couplers. These couplers are essential for the concrete slab and column connections, ensuring robust and reliable reinforcement in both vertical and horizontal applications.

Designed to meet the demanding structural requirements of large-scale developments, bartec couplers are known for their superior strength and durability. Their use in the Wynn project not only supports the integrity of the structure but also accelerates construction by facilitating efficient load transfer across critical connection points.

Dextra is proud to be part of this landmark project, demonstrating their commitment to delivering high-quality solutions for premier developments worldwide.