In-situ lime and cement stabilisation is an innovative and effective solution for improving soil properties. This process is vital for ensuring the safety and durability of buildings and infrastructure. Asfalti Piovese is a leader in the sector, offering high-quality services and customised solutions for every need.
Soil stabilisation service
What is in-situ lime and cement stabilisation?
In-situ lime and cement stabilisation is a soil improvement technique that involves applying lime or cement directly at the construction site. This method improves the strength and stability of the soil by reducing its compressibility and increasing its bearing capacity.
Procedures and technologies used
Lime stabilisation techniques
Lime stabilisation involves applying hydrated lime or quicklime to the soil, followed by thorough mixing. This process improves the geotechnical properties of the soil, making it more stable and resistant.
The in-situ lime stabilisation technique is used in the case of incoherent or low-bearing soil. It exploits the interaction between the binder and the moist clay particles to harden the mixture. As a result, the bearing capacity of the treated surface is increased.
Stabilisation is usually carried out on country roads and on the laying of road embankments. It is also used on areas designated for urbanisation and/or new construction.
Cement stabilisation techniques
Cement stabilisation involves adding cement to soil and mixing it to form a solid and durable matrix. This technique is particularly effective as a means of increasing the soil’s resistance to mechanical stresses.
This technique is primarily used to improve the load-bearing capacity of unstable road foundations and to improve the quality and subsequent classification of materials.
Lime and cement stabilisation techniques
Both lime and cement stabilisation techniques can be combined. For example, you can start by lime stabilising a 40/50 cm layer with silt-clay components. Then, you can proceed by cement stabilising the topmost 20/30 cm layer.
A preliminary laboratory study is required before stabilisation can be carried out. This step is essential to determine the correct quantity of lime or cement to mix with the soil. It is also necessary to calculate the relative percentage of water to add during the working phase.
Types of stabilisation offered
Soil stabilisation
This type of stabilisation is ideal for improving the bearing capacity of the soil, making it suitable for supporting heavy structures (thereby guaranteeing the safety and stability of buildings)
Slope stabilisation
Slope stabilisation is crucial to prevent landslides and soil slips, ensuring the safety of the surrounding areas. By using lime and cement, slopes become more resistant to erosion and environmental stresses.
Draining stabilisation
Draining stabilisation combines the mechanical properties of the soil with a greater drainage capacity, reducing the risk of water accumulation and improving the overall stability of the site.
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In-situ stabilisation applications
Primary urbanisation
In-situ stabilisation is essential for primary urbanisation projects, ensuring that roads, pavements, and other infrastructure are built on solid and long-lasting foundations.
Infrastructure projects
Lime and cement stabilisation techniques are widely used in infrastructure projects, such as the construction of motorways, railways, and bridges, improving the quality and safety of the works carried out.
In-situ stabilisation advantages
In-situ stabilisation offers numerous advantages, including:
- cost savings since it reduces the need to provide new materials;
- efficiency because it quickly improves the mechanical properties of soil;
- sustainability as it reduces environmental impact by reusing existing soil;
- durability because it increases the useful life of infrastructure.
