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Geotechnical Investigation aims to determine stratigraphy, subsurface struc- ture, tectonic evolution; physical, mechanical, and hydraulic soil properties to supporting for foundation design and construction, assessment and treat- ment of geological phenomena such as such as land subsidence, landslide, collapse…
Equipment applying to our soil investigation was imported from the lead- ing manufacturers in the market such as APAGEO (France), Humboltd (USA), Slope Indicator, Geokon (USA), Geonor (Norway), GeoMil (Netherlands), PASI (Italy),… which satisfy not only the requirements of Vietnamese standards (TCVN), but also international standards as ASTM, BS, or ASSHATO...
In addition, we also focus on improving our engineer resources by sponsoring them to graduated master degree in worldwide well-known universities, in order to commit high standards of Geotechnical Engineering Field for embankments and dams, slope stability, dams, hydropower plants and road bridges, irrigation structures, high-rise buildings, industrial structure, civil and infrastructure projects...
DRILLING ANH SAMPLING
Serve to take soil samples and field testing. Especial- ly, the company has Jackup rig for near offshore geo- logical investigation, this system can be carried outin all waves conditions and complicated weather.
I. GEOTECHNICAL INVESTIGATION
1. Piezocone penetration test (CPTu)
Its equipment of GeoMil – Netherlands can classify soils, define soil load capacity, point resistant (qc), Sleeve friction (fs), and pore Pressure (u)... Thereby calculating indirect parameters undrained shear strength (Su), dissipation of pore water pressure and horizontal coefficient of consolidation (Ch), foundation capacity…
2. Pressuremeter Test (PMT)
Define the parameters of the stress - elasticity, elasticity module (EP) and pressure limit (PL) for foundation design. This equipment is manufactured by APAGEO (France), which can be implement projects with the depth up to 120m.
3. Downhole Seismic Test (DHT)
Determine the P wave velocity and the S wave velocity along the borehole in the natural state, Poison ratio, shear modulus or elastic module, for building dynamic design calculation.
Seismic Refraction/ Reflection Test (SRT)
Determine the P wave velocity and the S wave velocity along the defined channel in the natural state, Poison ratio, shear modulus or elastic module, for building dynamic design calculation.
4. Electrical Resistivity Test (RST)
XDetermination of resistivity at the depths of the soil layers, in order to calculate the design of the lightning protection system, assess the corrosion potential of electrical equipment…
5. Thermal Resistivity Test (TRT)
By measuring the heat capacity and monitoring the temperature over time, it is possible to calculate the heat transfer coefficient, thermal conductivity 
and thermal resitivity 1/ of the trata at the testing sites.
6. Field Permeability Testing (FPT)
To determine hydrogeological parameters such as flow rate, permeability coefficient, water coefficient, lugeon coefficient, … by using methods of water compress test, water falling test, water pumping test in hydrogeological wells…
7. Field Vane Shear test (FVST)
This equipment is supplied by Geonor H10 - Norway, Model H10, with highest precision. To determine undrained shear strength (Su), and sensitive of testing depth. This model can perform in depth up to 30m. Its combination with Jackup Rig can perform penetration test offshore, marine and river, while other kind of equipment can hardly do.
8. Plate Load Test (PLT)
Determine the deformation modulus of the soil, in order to calculate the load bearing capacity and settlement.
9. Soil physic-mechanics
Geotechnical laboratory: Invested in the large scale, laboratory equipments to determine the physics of the soil meet TCVN, ASTM, BS, JIS standards. The equipment is invested in synchro - nized with the CDAS data acquisition system together with dedicated soft - ware corresponding to the test target, allowing for automatic and real-time acquisition of experimental data. This allows for the minimization of errors and it is possible to receive data from multiple samples corresponding to different test specimens without affect - ing the results of the experiment due to the delay of the data recording time experiment. Besides the ability to perform experi - ments that define normal physical parameters. The laboratory also has the capacity to perform cohesive test - ing, QU, UU, CU, CD, water, cut wings and penetrate in the laboratory.
Geotechnical Consultancy Report
Data processing is done by automatic software such as Geotechnical Software 7.0, CPTask, Res1D, Res2D, PASI Gea3, InterSism, Humboltd, CDAS, Midas GTS NX 2015 .... will automatical - ly produce the fastest survey results. The software allows to calculate, design and provide solutions for the foundation of the project.
