SOIL IMPROVEMENT

Strengthen and improve soil

The foundation of engineering structures is the part that bears the weight of the entire construction
Often, spread footings are constructed without testing the soil bearing capacity or without considering subsurface water, resulting in subsidence, tilting of structures and cracks in walls, which can become very dangerous.
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Soil investigation by PENETROMETER TESTING using a Cone Penetrometer

Fix subsidence of buildings and structures

This can be achieved by strengthening the soil by using the Deep Injection Technology offered by Tesla Engineering. The procedure is a long-term solution for adding strength and bearing capacity of the soil by injecting polyurethane which expands to increase compaction and density of the injected layer.

Lift structures

During the soil improvement procedure, when the density of the soil increases, the foundation and the above structure is lifted. The rise of the structure can be detected and controlled with high accuracy by using a levelling laser.

Steps to improve soil strength

1. First phase: inject to increase compaction and strength which will improve the ability to carry weight of the soil.
2. Second phase: polyurethane expands to increase density and bearing capacity which will enable the soil to counter the current static load from above.
3. The operation is carried out to cover the entire area to ensure that the soil improvement is consistent all around.

This procedure is very effective for areas that need to carry more weight and needs a higher bearing capacity of the foundation soil.

The polyurethane injection technology can be applied to fix subsidence, and increase strength and rigidity, in order to lift the entire structure back to its original level. A levelling laser is used to ensure that the height increase is accurate.

Fix subsided homes and garages, and fill voids

The subsidence rate in Thailand is high. The causes are over-pumping of groundwater, heavy construction load, vibration from traffic, etc. Subsidence of soil highly affects the residential area, causing problems that many of us are facing such as sunken homes, sunken garages, and unlevelled home extensions.

     Fixing the subsiding ground is a matter to carry out immediately.
Tesla Engineering understands the problem and has the solution that is non-invasive, fast, and minimises disturbance on your daily life, by using Polyurethane Injection Technology, an imported innovation from the US.

Characteristics of polyurethane

Polyurethane injection technology has been researched and developed to withstand loads as high as 50 tons and expands as much as 20 times. The material permeates the voids between the soil and combines with the subsurface material. Its expansion can lift sunken floors, roads, and factory grounds, with the ability to lift existing weights as well as additional loads. A levelling laser ensures accurate and precise results. A team of engineers with experience domestic and abroad oversees the entire operation.

Initial signs of home subsidence

• separation of floors of main house, garage, or home extension
• long cracks appear on walls around the house
• floors or walls tilt at visible angles
• noticeable separation of beams and walls
• soil subsidence leaving gaps and holes around the house

Home subsidence repair by polyurethane injection

The polyurethane injection technology has been researched and developed to withstand extreme loads while expanding with accurate dimensions. The technology has also been advanced further for deep subsurface injection in order to stabilize soil layers and strengthen foundations. The technology has been widely used in the US, Europe, Oceania, and Asia for more than 40 years.

Fix sunken road surface, lift-relevel, and prevent ponding

Factors causing sunken road surface

Constructions obstructing water ways, fewer recharge areas, transformation of land for residential purposes, all of these factors can cause poor drainage that weakens the soil under the road. Heavy traffic on loose and weak soil will finally lead to road subsidence that puddles in the rainy season. The puddles can be hazardous for accidents and must be fixed as soon as possible.

Repair operation by Tesla Engineering

Sunken and puddled roads are fixed by identifying the road surface levels and calculating the height rise for polyurethane injection. The flow direction is carefully determined to ensure that the water can drain properly and that no more puddles will develop in the future.

Subsidence of a road at a T-junction causes ponding every time it rains. The water collects in the sunken area, unable to drain properly. The injection of polyurethane was carefully calculated to lift-relevel the surface and allow the water to drain in the right direction, preventing future ponding.