by Dextra group, located in Bangkok, Thailand, is a leading manufacturer and distributor of civil engineering construction products.
It has branches in the United States, Europe, the Middle East, India and Asia.
Since its establishment in 1983, dextra group has participated in the construction of more than 10000 large-scale construction and industrial projects around the world, which provides it with unique global experience and expertise.
However, the most prominent design of dextra group is groutec mechanical connection system.
Groutec mechanical connection system groutec is a mechanical connection system with internal thread at one end specially designed by dextra group for the connection of precast concrete components.
Each groutec sleeve has a threaded end (used for connection between reinforcement in the prefabrication plant) and a wide cavity, which can be filled with non shrinkage mortar at the construction site.
Groutec has three models to choose from in the design and manufacturing process: small s, large L, and F.
s and l can connect any product of the threaded system designed by dextra, including rolltec, BARTEC and Fortec, while f does not need to be used Any reinforcement can be connected between components separately.
At the construction site, the connection can be completed by injecting non shrinkage mortar into the cavity of the mold, which takes only a few seconds.
Whether the upper or lower components are connected horizontally or vertically, groutec can be completed successfully.
In the prefabrication plant, with the help of groutec, precast concrete components can be connected quickly and accurately, which can save a lot of time for the construction process.
In recent years, dextra group has built a large number of famous buildings with groutec connection system.
Let’s take a look at the great power of this small internal thread connection system in architecture.
Meihua apartment project a typical case of dextra group using groutec connection system is Meihua apartment in Bangkok, Thailand.
Meihua condominium is a 38 storey apartment project, which consists of two towers, each of which is 112 meters high.
It is located near the elevated subway station in LaAi County, northwest of Bangkok.
Upon completion, the residential building will accommodate 1013 apartments.
The first phase of the project (the first tower) began in September 2015 and was completed around March 2018.
Through the use of “full prefabrication” concrete technology, rapid construction was realized, and pruksa, the builder of the project, also used his own prefabrication plant for the project.
For this project, pruksa’s goal is to quickly lift the prefabricated wallboard during the construction process (to be used as shear wall).
Therefore, the use of groutec connection system is the best choice for this project.
Installation process of groutec mechanical connection system: the design of prefabricated wall panel, the prefabricated wall panel is 2.5m wide and 2.8m high, and the groutec threaded connection system is installed on the steel reinforcement at the bottom of 25mm floor slab (the reinforcement was previously made of BARTEC threads).
Then, the groutec installed at the bottom of each prefabricated component is cast and molded as part of the prefabricated wallboard component.
The prefabricated component pouring thread is connected to the groutec connection system on the installation template locator.
Install the wallboard before injection pipe pouring: the wallboard after pouring: because the cavity of groutec is very wide, even if the axial deviation is very large , prefabricated components can also be accurately connected.
Wall panel installation and installation of sealing plate to prevent grouting leakage # wall panel hoisting brace installation, After installation, release the crane shackle and inject non shrinkage mortar (it only takes less than five seconds for the mortar to be injected into the cavity of the mold) once the grouting overflows, the mortar can be filled through the lower pipe.
After three days, the brace supporting around each wall panel can be removed.
In addition to Meihua apartment, dextra group also has many cases of using groutec connection system, such as the forest city project in Johor, Malaysia.
The forest city is in Malaysia A large-scale comprehensive urban development project in Iskandar, Johor, at the southern end.
From the early stage of the project, dextra group has been involved in providing it with S-number product of groutec connection system as a prefabricated solution.
Groutec connection system enables rapid connection between prefabricated columns and wallboards without repeated installation on site, thus speeding up the construction of the project.
The forest city project also uses several sets of BARTEC threading equipment, which fit with the threaded reinforcement, so it can be connected with the top of the groutec sleeve.
Dextra’s after-sales team also conducted several employee trainings to ensure a high level of production throughout the project.
Jamnagar refinery expansion Jamnagar refinery is located in Gujarat in western India and is currently the largest refinery in the world.
It was put into use in 1998, covering an area of more than 50 square kilometers.
Dextra group has been involved in the construction of Jamnagar from an early stage and has provided the group with excellent reinforcement joint solutions in phases 1, 2 and 3 of the project.
Especially for stage 3, three kinds of reinforcement connectors are used: BARTEC connection system for in-situ casting and reinforcement connection in foundation, pile cage and column cage.
The BARTEC connection system is also used for the connection of reinforcement in rafts and pile caps.
For the pipe rack constructed by prefabricated components, the prefabrication plant part uses groutec connection system to connect beams and columns, which is placed in the elements at the bottom of the pipe rack and filled with cement mortar for rapid connection of components.
For other parts where the reinforcement is too short for traditional overlap, dextra group uses the Unitec connection system.
In addition, groutec connection system is also applied to many other famous projects, such as the double tower office building project in London Wall place in London, etc.
the connection system invented by gextra group saves time and labor, so that prefabricated components can be easily connected.
If there is such technical support in China, I believe there will be a great breakthrough in the construction industry.
Source: dextra group wants to see more assembly video information ~ scan the QR code at the bottom and long press the identification QR code to find more good articles “hot articles recommended in this issue” ▼ click on the lower left corner“.
