Dextra held a seminar on building construction technology with Bouygues-Thai on Friday, September 18, 2020 at Dextra Manufacturing office and factory in Bangkok, Thailand.
The one-day seminar featured innovative precast element connection technology, tension and compression bar systems, crosshole sonic logging testing method, a technical detailing training and a factory visit.
These are extraordinary times, creating unique obstacles and unexpected opportunities for ports professionals around the world.
Join us at this upcoming webinar event to discuss about the situation in Southeast Asia:
CURRENT CHALLENGES AND FUTURE OPPORTUNITIES FOR PORTS AND SHIPPING IN ASEAN
Thursday, September 24, 2020
10.00 to 11.30AM (CEST)
The webinar features prestigious panelists in the port and shipping industry of Indonesia, Malaysia and Philippines, along with Dextra experts in port expansion solutions.
Click here for more information and registration
Dextra is showcasing innovative ground engineering solutions, featuring Olhos macios GFRP e Rock-Bolts, at the World Tunnel Digital Congress (WTC) 2020 on September 14-16, 2020.
WTC is one of the world’s leading tunneling event that explores the latest innovations, trends and advances in all areas of tunneling, from tunnel project development to both design and construction.
The event is moved to a fully digital platform due to the impact of COVID-19: it will include online technical paper presentations, along with training courses, and virtual exhibitions by companies from all over the world.
Dextra features a wide range of underground temporary and permanent support solutions, with a focus on cuttable glass fiber reinforcement polymer (GFRP) technology: join us at the virtual exhibition at booth no. SS11 (Silver Sponsor)!
Dextra GFRP rebar technology is featured in the April 2020 issue of the SAICE Civil Engineering magazine.
The article provides guidance on the design of lateral support systems using FRP rebars as soil nails or ground anchors.
Fiber-reinforced polymers are increasingly used in mining and tunneling projects as they provide high performance while being easily cuttable, corrosion-free and lighter in weight with respect to steel rebars.
We are excited to announce that a wide range of Dextra ground engineering solutions is now available in the Rocscience programs Slide2, Slide3, RS2 e RS3.
Rocscience is a world leader in developing 2D and 3D software for civil, mining, and geotechnical engineers. For over 20 years, they have built on leading-edge research to create the best geotechnical software available.
Users will be able to select Dextra products from a built-in list and integrate them directly into their design.
The Dextra products that are available in the Rocscience suite include:
• ASTEC Active Anchor TB3
• ASTEC Combination Bolt
• ASTEC GFRP Injected Thread Rockbolt
• ASTEC GFRP Thrust Bolt
• ASTEC Soil Nail Grade 50
• GEOTEC GFRP Rockbolt
• GEOTEC GFRP Self Drilling Rockbolt
Dextra ground engineering solutions are high performance and versatile. Due to their cuttability, the bolts can be used for the stabilization of soil-covered slopes, face bolting and other tunneling/mining works in both temporary and permanent applications.
Learn more about Dextra soil stabilization solutions
Learn more about Dextra tunneling and mining solutions
We are delighted to share with you our ISO 14001:2015 (environmental management system) certificate awarded by the Bureau Veritas Certification.
It is to certify that the management system of Dextra China has been audited and found to be in accordance with the requirements of the management system standards, in the scope of design, manufacturing and sales of products.
With the update of our ISO 9001 certification in 2018, this new environmental certification completes a solid quality system in the Guangzhou office.
Dextra has been consistent in creating a green and environmentally sustainable manufacturing system.
We have been improving our quality management system and raising environment awareness in our daily operations.
The Imperial College London tested Dextra Bartec/Fortec and Griptec couplers at elevated temperatures to evaluate how the couplers would perform in case of a fire.
Highlights of the test include:
Please read full article below:
Dextra have recently collaborated with Imperial College London to investigate the performance of rebar couplers at elevated temperatures, simulating temperatures which could occur in rebar due to fire, both before and after concrete spalling.
Standard 16mm and 20mm Bartec/Fortec and Griptec couplers were used, as well as non-spliced reinforcement and tests conducted at ambient, elevated steady state and transient elevated temperatures.
Codified procedures for the fire design of reinforced concrete structures typically give prescriptive recommendations for rebar/coupler cover with the aim of protecting the reinforcement from reaching temperatures above a critical value of around 500°C.
The test results show that:
The findings also indicate that current codified rules can be used for assessing the strength and stiffness properties of both non-spliced rebar and rebar connected with Bartec/Fortec or Griptec couplers.
However, the code assumptions regarding the ultimate strain characteristics at elevated temperatures were found to be unrealistic for hot rolled rebar, as well as rebar connected by couplers.
Referências
Bompa, D. V., & Elghazouli, A. Y. (2019). Elevated temperature characteristics of steel reinforcement incorporating threaded mechanical couplers. Fire Safety Journal, 104, 8–21. https://doi.org/10.1016/j.firesaf.2018.12.006
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