Land consolidation –

Foundation soil subsidence

Very often it can happen that a foundation soil yield due to both actions natural That anthropic. When the balance begins to falter, the foundation structures will also suffer as a result injuries.

Examples of land subsidence may depend on the climate change which leads in periods of strong heat or in the vicinity of tall trees to the reduction of the water content with drying and shrinkage of upper layers of the soil or by the presence of vibrations due to heavy vehicular traffic in the vicinity.

Land consolidation techniques

With the subsidence of the land, real structural collapses of the works above can occur. These failures are defined vertical differential settlements.

It follows that this type of subsidence remains to all intents and purposes a problem of the land where by investigating the geological context and the causes of the subsidence it will be possible to decide which consolidation techniques to carry out to report the necessary stability of the construction.

Land subsidence: causes

As anticipated, the differential settlements are triggered by several factors:

• Anomalous concentrations of water in the soil;
• Overloads anomalies on the foundation;
• Vibrations from nearby vehicular traffic;
• Neighboring excavations all’edificio;
• Sunction from tall trees near the foundation.

Seismic actions also favor land subsidence, calling for consolidation interventions for the seismic improvement of a building.

In this GEOSEC area offers minimally invasive and targeted consolidation techniques ideal for every type of situation.

Land consolidation

When land subsidence is underway, a level of is reached stress limitethe building above collapses and the problem can be solved by an optimum land consolidation.

Consolidation, in the GEOSEC procedure, firstly follows a inspection technical accuracy by the company’s specialized technicians (engineers and geologists), to define the state of the places and the main methods of intervention.

GEOSEC solutions can be different depending on the geotechnical problem:

• consolidation of foundations with micropali;
• consolidation of significant volume of land with injections of expanding resins.

Expanding resin injections follow one approach little invasive and very useful, capable of obtaining excellent results thanks to the chemical reactions irreversible they produce. The resins most used are those closed cell polyurethanewhich introduced into the ground through small holes first permeate into the ground and then compact it as they expand.

Ground consolidation with injections

The consolidation of a foundation ground can involve both new buildings and existing structures.

Strengthen a ground through injections of resins for consolidation allows you to fill in the gapsdisplace excess interstitial water and therefore compact the treated volume permanently.

The operation is even more optimal if performed with the ongoing diagnostic control of 4D resistivity tomography.
An advanced diagnostic system that allows you to acquire images of the ground beneath the house before, during and at the end of the injections. In this way the technician will advantageously be able to aim the injections exactly where needed with decidedly superior effectiveness.
Furthermore, as mentioned, injections of expanding resins can contribute to the seismic improvement of buildings. For this purpose GEOSEC offers patented technologies Seismic Defender e LIQUEMITtwo consolidation procedures capable of mitigating the seismic effects that can affect buildings in different contexts.

These solutions can be adopted both preventively before construction but also on buildings already built. In particular, the LIQUEMIT method is dedicated to the safety of liquefiable soils in the event of an earthquake.

Production of expanding resins

The resins, designed so as to ensure homogeneous behavior of the ground, they can be inserted both underneath the building and around it, respecting depth e amount compliant with the objective to be pursued.

Use of expanding resins

Interventions using resins aim atuniformity of the supporting conditions to achieve a homogeneous distribution of contact pressures, resolving vertical differential settlements. The consolidating action affects the significant volume of the foundation soil.

Characteristics of expanding resins

Thanks to them expanding force of compaction, with resin injections it is possible to obtain a mechanical improvement of the characteristics of the subsoil.

In some cases, for example in the presence of very humid soil, lifting may occur in the collapsed structures with the temporary closure of the cracks in the walls. This effect is temporary and not pursued, as the primary objective of these interventions must be the stabilization of the foundation soil and not the lifting of the collapsed buildings.

Resin injections for consolidation

But when it’s convenient employ resin injections?

In all cases where the significant volumesubject to failure, requires reinforcement or in situations where the operation of piling turns out to be too much expensivethat is, when the most compact soils are at such great depths that they can be reached at too high a cost.

It is also fundamental remember that resins cannot strive when there are active landslides.

Advantages of expanding resins

The expanding resin injection method is characterized by the following advantages:

• Reduced risk to disperse injected material thanks to the rapid expansion of the resins;
• Absence of pollution thanks to resins compatible with the soil and circulating water;
• Unlike cement injections, the ground it is not burdened from resins, because their specific weight is truly minimal.

As for the structures:

• Possibility of carrying out even partial interventionsthe resins do not provide significant stiffness;
• No demolition, excavation and dustonly small holes crossing the foundation for the introduction of the consolidating resin;
• Absence of vibrations and low impact on construction, no need for drilling;
• GEOSEC interventions are covered by TEN-YEAR WARRANTY of the company (20 years on the market) and also as a primary insurance company in the sector.

Even i tax advantages are not to be underestimated, in fact with the stability law a tax deduction is allowed up to 65% of the intervention cost for buildings falling in seismic zones 1 and 2. For all buildings outside these zones, the IRPEF deduction will be of 50%. Finally, GEOSEC interventions are driving forces in the discipline of the 110% SUPERBONUS.

Foundation consolidation with expanding resins prices

GEOSEC Srlto formulate an optimal price, proceeds to a esteem evaluating various parameters.

In the survey phase, theorigin of the disruption and we will interpret the crack pattern through a careful inspection.

Land consolidation Geosec

Subsequently, upon request and without obligation, the company will be able to formulate a proposal for targeted intervention with related guarantees. GEOSEC technicians are available to customers for any further information on the case, listening to specific needs to satisfy every expectation.

End of article

THE EDITORIAL TEAM RECOMMENDS

Land consolidation: who to rely on

The company GEOSEC Srl it’s a company leader in the consolidation of foundations and soil, with injections of expanding resins and driven pilings.

From about 20 years is present on Italian territory, today it is present in many European countries with offices and technicians adequately distributed throughout the territory ensuring a service certificate e di qualityrespecting high standards.

GEOSEC work with technicians with proven experience in the field of consolidation of land and foundationswith technical qualifications issued by sector control and inspection bodies, with a ten-year insurance guarantee on all its interventions.

Il free service the first inspection to verify the feasibility of an intervention is entrusted to engineers or geologists present throughout the national territory, so that the customer can receive specific assistance and establish which is the optimal solution suited to your needs.

In short, rely on GEOSEC Srl it’s a real one warranty. For further information visit the site.