About the Tenocolumn method (the deep mixing method): This is a proprietary method owned by the Tenox Kyusyu Japan Company.
The Tenocolumn method is a method of reinforcement and improvement of soft soil by mixing soil with cement slurry. After the chemical reaction in the soil-cement slurry mixture, the mixture becomes solid and forms a soil-cement column in the ground.
TENO BLADES are unique and simple invention → creates high-quality products.
REQUIREMENTS: The most important condition for the construction process of a soil-cement column
+ The soil and cement slurry must be COMPATIBLE (for the soil-cement mixture becomes solid)
+ The mixture is WELL-MIXED (to create a uniformity mixture).
Then, due to the chemical reactions in the soil-cement slurry mixture, the soil-cement column has a stable quality.
PHENOMENON: In the case of mixing cohesive soil, there will be the phenomenon of “chunks of soil entrained in rotation with the mixing head” (H3). Forming a solidified soil cement column with large chunks of soil inside the soil cement column (H1a); product: non-uniformity column.
SOLUTION: For the purpose of overcoming the above phenomenon, the Tenox Kyusyu Japan Company invented a mixture head with TENO BLADES. Teno blades have a very simple structure. Teno blades are “free blades”, which is about 100mm longer than the length of an excavation blade, mixing blades.
RESULT: When the Teno blades are attached to the mixing head, the Teno blades will prevent chunks of soil from being entrained in rotation with the mixing head.
The Tenocolumn method has obtained “Technical Examination Certification” from the Advanced Construction Technology Center in Japan. The certificate confirmed “Strength of Foundation Improvement” of all soils, including the types of loamy soil and organic soil. The certificate also confirmed a real time Tenocolumn construction management system developed by Tenox Kyusyu Japan Company
The Tenocolumn method is used to reinforce and improve the foundation of buildings and has recorded some great achievements for types of constructions:
+ Load bearing foundation: civil and industrial construction
+ Ground improvement: road foundation, factory foundation, port foundation,…
+ Column group type for slope stability
+ Retaining wall for basement construction.
+ Column group type for mitigation of liquefaction potential.
+ Cutoff wall (overlapping columns)
HIGH QUALITY:
In the Tenocolumn method, the construction management (from the cement slurry mixing stage to the soil-cement slurry mixing process, etc.) is optimized. So, this method creates a soil-cement column with high strength and stable quality.
SAFETY CONSTRUCTION:
The system of base machines and construction auxiliary equipment has been highly mechanized. This leads to significantly reduced dangerous operations and increased safety in the construction process.
FAST AND ECONOMIC EFFICIENCY:
Because the construction process is simple, the time to improve the ground is short leading to shorter construction times and high economic efficiency.
EFFICIENT WITH MANY SOIL TYPES:
The characteristic of the Tenocolumn method is its adaptability to many types of soil: sands, silts, clays, clay of high plasticity, etc. It can even be effective for peat and other highly organic soils.
CONSTRUCTION WITHOUT POLLUTION:
The Tenocolumn method is environmentally friendly and less harmful to the environment. There is almost no ground-borne vibration, noise, influence on the surrounding environment. At the construction site, the soil has been converted into a Tenocolumn when solidified without causing groundwater pollution or secondary pollution.
All constructions have used the Tenocolumn method, which has been verified by large earthquakes in Japan such as ” The Great Hanshin earthquake”, “The Niigata Chuetsu Earthquake”, ” The Noto Peninsula Earthquake” and ” The Niigata Earthquake Chuetsu-oki”. This proves the high reliability of the Tenocolumn method.
The results of the investigation of structures concentrated in the most severely damaged areas of ” The Great Hanshin earthquake ” show that in all 34 cases using the Tenocolumn method, the foundation and the above structures are undamaged. {According to the The Great Hanshin Earthquake Damage Survey – Survey Report on Foundation Structures Using Tenocolumn (method for excavation and checking)}.
Currently in Vietnam, base machines soil cement column construction equipment using “Teno Blades”, it seems a lot of companies are applying the same method as the Tenocolumn method. However, the results of the ground improvement when using this “fake Teno Blades“, it has not the same quality as the product of Tenox Kyusyu Vietnam Company.
We aren’t franchising companies or technology imitators, Tenox Kyusyu Vietnam Company has built an internal system of design, management, construction, etc. for the Tenocolumn method. Thereby, it is possible to store in real time and provide the entire construction management process, construction data, etc. to customers. Therefore, only Tenox Kyusyu Vietnam Company can prove the true value of the Tenocolumn construction method.