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Manufacturing technology of precast concrete walls – New construction solutions for the construction industry

For the first time appeared in Vietnam market Precast Panel solution – precast concrete wall bearing Australian technology brought a new construction solution. This technology will help reduce costs compared to traditional technology.

To better understand this issue, the Construction Reporter had a discussion with Mr. Tran Phuoc Dong – Director of Australia Concrete Company Limited.

“Sir, this new technology has been talked about a lot in Vietnam and the world has applied it for a long time, could you talk more specifically about this structural solution?”

“Currently in Vietnam market there are many products that people call panels. I can summarize the following basic panels: 3D Panels (concrete wall products with two outer and hollow layers in the middle), prefabricated concrete partitions to replace partitions and can cover buildings, panels hollow floor (pre-stressed concrete floor).

Two wall products are all types of walls or partitions and not bearing. Floor panels are a very popular type of prefabricated component that replace floor-in-place shed. Our precast panels are essentially “load bearing precast concrete panels” (prefabricated concrete walls) with the professional name of large concrete wall panels.

Precast panels themselves are just a precast concrete structure that has been available for a long time in the world and is widely applied in many fields such as high-rise & low-rise apartments, villas, industrial houses, hospitals, However, Australia is a pioneer country in the world that has researched, developed and successfully applied precast panels for high-rise apartment buildings. Height up to 60, 70 floors and even higher.

To achieve this, we develop a comprehensive solution that combines different disciplines from the initial design: architecture, structure, manufacturing, erection and construction. The architect must propose the most suitable and economical space for investors and users based on the basic principles of precast panels. Structural engineers must design the most optimal structure to ensure durability and stability and to save maximum.

Therefore, structural solutions must thoroughly utilize the compressive strength of concrete and minimize its bending working conditions. Since then, the volume of concrete and steel in our works has reduced concrete and steel significantly. The production of precast concrete makes the bearing wall components of high quality and precision due to the manufacturing technology that we have enjoyed in more than 30 years of research by our engineers and suppliers. in Australia.

This high precision manufactured precast panels are used to position the entire building during construction. The quality of the building has since been improved. Because the structure consists only of precast panels with vertical load, the concrete floor is not beam after beam to transmit horizontal load into the middle core (hard core stair) is poured in place. This system can achieve optimum efficiency because its components are designed to make the most of its best performance.

Thanks to this simple structure, the construction work is also as simple as possible. The management of workers on the site is therefore easy. We are able to complete the construction of a raw part of 1,000m2 within 4 days. The erection of panels requires only 4 workers to complete the entire erection within a day.

All of this leads to very competitive prices even though we use very advanced Australian technology from design to manufacturing, erection and construction of the entire project.”

“In your opinion, how much cheaper will this technology be compared to traditional construction?”

“Now, comparing our pure precast panels to the existing design is limp. As we said above, our solution is a comprehensive solution. The value we save from a “pragmatic” architecture design, a structural design that uses precast panels to save iron and concrete, and a back tensioned floor that has a design that saves prestressed cables due to no beams.

The precast panels solution helps us not only save time for the construction of the building’s structural system, but it also helps us be able to complete the building from the bottom up. Therefore, we can construct the frame system and complete the building in the form of rolling instead of serial as today. Progress has therefore been significantly increased. The concept of topping out the building will completely disappear as we will be able to complete a 45-storey building within 3 months of taking off the roof.

An apartment on the 10th floor can be completely completed while we are working on the raw part on the 18th floor. It is understandable that buyers of a 10th floor apartment can “visit” the completed apartment before handing over. of them while we’re still building 10, 20 floors up. This helps to alleviate the psychology of customers in the context that many investors are unable to complete and hand over their buildings even though the topping-out ceremony has been huge and long before. All these factors help us to provide a complete apartment that is 10 – 15% cheaper than the traditional solution.”

“So is such a new technological solution compliant with Vietnamese standards when it is put into application?”

“According to Circular 18/2010 / TT-BXD of the Ministry of Construction has allowed us to use foreign standards in the design and construction of construction works. The circular also specifies which investment decision makers have the right to decide which standards to use and in particular which standards. This is reflected in the construction investment project and submitted to the licensing body.

Besides, at the present, Vietnam also has many sets of prefabricated concrete standards such as TCVN 9115: 2012 and especially the TCVN: 9376: 2012 set of standards applicable to large-plate assembly houses.

Based on the above circulars and standards, we can confirm that this technology can be fully used in buildings in Vietnam.”

“Fast execution time, such low cost will be suitable for current social housing projects. This can be considered as a solution to help people access more cheap houses but high quality, sir?”

“I find the Ministry of Construction to be very successful with the Social Housing Program, which is very humane with the support of the bank that has made it possible for many middle-income people to own apartments. But if our solutions are properly supported by the Ministry, the authorities and other agencies to put into use all the apartment solutions, the Social Housing Program will be even more influential. We are expecting a project to solve common housing problems for Vietnamese cities in order to free all of the slums to make way for green, clean neighborhoods with apartment buildings. Modern and high-rise buildings. From here, the urban and people’s problems can be achieved and the government’s settlement policy becomes effective.”

Sincerely thank you!

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