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タグ: rebarcoupler

耐震強度：耐震接合部の確保

投稿日: アーティスト: Kansuda Visesthanakorn

 

耐震性能の確保：鉄筋カプラ試験と認証の重要な役割

地震活動の多い地域では、鉄筋コンクリート接合部の構造的健全性は生死に関わる問題です。鉄筋間の荷重伝達に重要な役割を果たす鉄筋カプラーの性能は、地震時の建物、橋梁、インフラの耐久性を確保する上で特に重要です。厳格な試験と認証がなければ、これらの部品は構造物の弱点となり、壊滅的な破損につながる可能性があります。

鉄筋カプラにおける耐震性能の重要性

地震力は構造物に動的な周期的な荷重を及ぼすため、鉄筋カプラは強度や延性を損なうことなく、繰り返しの応力反転に耐えることが不可欠です。信頼性を確保するため、カプラは実際の地震状況をシミュレートする厳格な試験を受けなければなりません。これらの試験では、以下のような要素が評価されます。

  • 繰り返し応力負荷下でのカプラの性能を測定するための高サイクルおよび低サイクルの疲労耐性。
  • 引張強度と延性により、地震の際にも連結器の構造的完全性を維持できます。
  • 接続によって鉄筋コンクリート構造に脆さが生じないことを確認するための故障モード。

 

デクストラの耐震性能への取り組み

デクストラは、耐震性能の重要性を理解しており、当社の鉄筋カプラーが業界基準を満たし、それを上回ることを使命としています。私たちは、以下の取り組みを通じてこれを実現しています。

 

信頼できる認証機関による第三者認証

世界的な耐震設計要件への適合を保証するため、Dextraの鉄筋カプラは国際的に認められた第三者機関による試験と認証を受けています。これらの認証は、当社のカプラが以下を含む最も厳格な規制基準を満たしていることを証明しています。

  • ISO15835-1 クラス S – 地震アプリケーションにおける機械的スプライスの適合性に関する国際規格。
  • AC133 – 地震地域で使用される機械的接合部に関する広く認められた認定資格。
  • NF A35-020 – 現在、耐震性能に関して鉄筋カプラーに対して最も要求の厳しい製品規格です。

ACI 318、ASTM A1034、IS16172 に基づいた、主要市場における現地承認およびパフォーマンス評価。

これらの認証とパフォーマンスを取得することにより、Dextra のカプラ ソリューションは最も過酷な地震条件下でも確実に機能するという自信をエンジニアや請負業者に提供します。

 

内部耐震試験能力

デクストラは、外部認証に加え、高度な社内試験施設を運用し、製品の標準要件を超える品質を実現しています。ISO/IEC 17025認定を受けた社内材料試験ラボでは、様々な地震を想定した条件下での製品挙動をシミュレートするための、高度な繰り返し荷重試験装置を備えています。試験には、張力および張力と圧縮力の組み合わせによる低サイクル荷重試験が含まれます。

当社の社内テストにより、継続的な製品開発と革新が保証され、進化する耐震設計基準と顧客の期待に先んじることができます。

 

 

未来に向けてより安全な構造物を構築する

耐震性は、コンプライアンス遵守の問題だけでなく、人命の保護とインフラ投資の保護にも関わります。だからこそ、当社の鉄筋カプラは、徹底した試験と認証を受けています。第三者機関による認証と厳格な社内試験によって検証された耐震性能への取り組みは、当社のソリューションが最高水準の安全性と信頼性を満たしていることを保証します。

Dextra を選択することで、設計者、請負業者、エンジニアは、安全性に関しては妥協の余地がないため、地震の力の課題に耐えられるように構造物が構築されていることを信頼できます。

当社の鉄筋カプラーについて詳しくはこちら
詳細についてはお問い合わせください

Collaboration Over Competition: The Power of the Supreme Solution for Precast Hybrid Connection

投稿日: アーティスト: 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 そして 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 そして 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 そして 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. グルーテック 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. グルーテック 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

の 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

投稿日: アーティスト: 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.

トライアンフ・モーターサイクルズ・オフィス＆工場（タイ）

投稿日: アーティスト: Kansuda Visesthanakorn
 

トライアンフ・モーターサイクルズ・オフィス＆工場（タイ）

 

デクストラは、プレキャスト構造用の高性能鉄筋接合ソリューションを提供することで、タイのチョンブリにあるトライアンフ・モーターサイクルズ・オフィス＆工場の建設において重要な役割を果たしたことを誇りに思っています。

このプロジェクトでは、デクストラは グルーテックS 32mmカプラーと バーテック プレキャスト柱の補強を支える、標準および溶接可能なカプラー（直径16～32mm）です。この構造システムは、GroutecとPeikkoのコラムシューを組み合わせたハイブリッドなアプローチで、施工効率、構造の完全性、そして設置速度を向上させます。

デクストラの高度な鉄筋接合ソリューションを導入することで、高強度で信頼性の高い接合部を実現し、現場での労働力を削減し、プレキャスト部材のシームレスな組立を実現しました。この貢献は、現代のインフラのニーズを満たす革新的で高品質な建設ソリューションを提供するというデクストラのコミットメントに合致しています。

 

Sustainability of Rebar Couplers: Greener Future for Construction

投稿日: アーティスト: 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.

The Evolution of Precast Construction: Couplers vs. Corrugated Tubes

投稿日: アーティスト: Kansuda Visesthanakorn
Precast Couplers vs. Traditional Corrugated Tubes

Precast Couplers vs. Traditional Corrugated Tubes

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Download Groutec brochure

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

リトアニア、ネリス川にかかるバルティカ鉄道橋

投稿日: アーティスト: Kansuda Visesthanakorn
 

リトアニア、ネリス川にかかるレール・バルティカ橋

 

ヨナヴァ近郊のネリス川に架かるレール・バルティカ橋の建設は、この地域の鉄道インフラにとって重要な節目となります。全長1.5キロメートルのこの橋は、リトアニアのみならずバルト諸国全体でも最長となります。トラベラーによる現場打ち、支保工による現場打ち、スパンごとのカンチレバーなど、様々なスパンで設計されたこのプロジェクトは、高度なエンジニアリング技術と環境保護への取り組みを示すものです。

デクストラは、橋梁の構造的健全性を保証する上で重要な役割を果たしており、 ソニテック 杭の試験に使用するクロスホールソニックロギング（CSL）試験管。CSL試験は、杭のコンクリートの品質と健全性をリアルタイムで把握し、厳格な安全基準を満たしていることを確認するための重要な検査です。この高度な技術により、エンジニアは異常を検知し、コンクリートの品質を評価することができ、橋梁の長期的な耐久性を確保することができます。

の用法 ソニテック 橋梁の工学的複雑さと建設に伴う環境配慮を考慮すると、これは特に重要です。この技術を導入することで、デクストラは最高水準の建設と環境管理の維持に貢献します。

レール・バルティカ・プロジェクトは、バルト三国史上最大の鉄道インフラ開発プロジェクトです。完成すれば、ワルシャワ、カウナス、リガ、タリンといった主要都市を結ぶ、ヨーロッパ軌間（ヨーロッパ軌間）の複線電化鉄道が完成します。この野心的なプロジェクトは総延長870キロメートルに及び、そのうち392キロメートルはリトアニア国内に及びます。

デクストラは、ネリス川に架かるレール・バルティカ橋の建設を通じて、地域の連携強化、持続可能な交通ソリューションの推進、そして開発と環境保全の繊細なバランスの尊重を約束する画期的なプロジェクトに貢献できることを誇りに思います。建設が進むにつれ、この橋は革新的なエンジニアリングと連携の証として、バルト諸国のより明るく、より繋がりのある未来への道を切り開くでしょう。

Industrial Bridge, Chile

投稿日: アーティスト: 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 ロールテック mechanical splice system, ensuring robust and reliable rebar connections. Additionally, 頭付きバー were provided to enhance anchorage performance, a critical requirement for the bridge’s structural integrity.

The project also utilized ソニテック 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.

ウィン・アル・マルジャン島（UAE）

投稿日: アーティスト: Kansuda Visesthanakorn
 

ウィン・アル・マルジャン島（UAE）

 

アラブ首長国連邦ラス・アル・ハイマに位置するウィン・アル・マルジャン・アイランドは、ウィンにとって中東初進出となる、象徴的なラグジュアリー・デスティネーションとなる予定です。この壮大な開発計画は、ワールドクラスのホテル、高級レストラン、エンターテイメント施設、そして充実したレジャー施設を擁し、アラビア湾の美しい海岸沿いに佇みます。ウィンは、その特徴である優雅さと壮大さを融合させ、世界中から訪れるお客様に、ラグジュアリー、リラクゼーション、そしてエンターテイメントが融合した比類のない体験を提供することを目指しています。

デクストラは35万台の供給で建設に大きく貢献した。 バーテック 連結器。これらの連結器はコンクリートスラブと柱の接合に不可欠であり、垂直方向と水平方向の両方において強固で信頼性の高い補強を確保します。

大規模開発の厳しい構造要件を満たすように設計されており、 バーテック 連結器は優れた強度と耐久性で知られています。ウィンプロジェクトでの使用は、構造の健全性を維持するだけでなく、重要な接続点間で効率的な荷重伝達を促進することで建設を加速させます。

Dextra は、この画期的なプロジェクトに参加できることを誇りに思い、世界中の一流開発に高品質のソリューションを提供するという同社の取り組みを実証しています。

 

Grand Paris Express – Line 16-18, France

投稿日: アーティスト: Kansuda Visesthanakorn
 

Grand Paris Express – Line 16-18, France

 

Dextra has proudly supplied its high-performance フォルテック 鉄筋カプラーと ソニテック crosshole sonic logging (CSL) tubes for the construction of the Grand Paris Express Lines 16 and 18 in France, one of Europe’s most ambitious infrastructure projects. This metro expansion aims to improve connectivity between suburban areas and the city center, providing a more efficient transportation network for millions of commuters.

デクストラの フォルテック couplers were used for reliable and durable rebar connections, ensuring the structural integrity of the extensive underground tunnels and stations. In addition, the ソニテック CSL tubes were supplied for concrete pile integrity testing, which is essential for assessing the quality of deep foundations. These innovative solutions have played a crucial role in ensuring the project meets high safety and performance standards, underscoring Dextra’s commitment to delivering top-quality materials for large-scale infrastructure developments.

With the Grand Paris Express set to transform the city’s transportation landscape, Dextra’s involvement highlights its role in shaping resilient and sustainable urban infrastructure.