Soil stabilization: main steps

2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16

In the construction of any coating, an initial calculation of its wear resistance and bearing capacity is necessary. Some methods are used for pedestrian areas, and a completely different approach is practiced in the creation of automotive coatings. A special base helps to counteract the stress that acts on pavements under traffic flows. For its formation, soil stabilization is used, which involves the use of organic and inorganic materials.

Ground Stabilization Overview

The main purpose of this event is to create a solid foundation under the road or platform, which will not deform and spread during operation. The entire workflow can be divided into four stages. First of all, the soil stabilization technology provides for the preparation of the material from which a kind of cushion will be created. Further, an active mixture is created from substances with the desired characteristics. Already at the place of use, with the help of special equipment, the mass is applied to the working area. The final stage involves the distribution and a kind of mixing of the substance with the base soil.

It is important to understand that thisthe process itself is only an intermediate step in the implementation of the overall road and site construction project. When soil stabilization is completed, insulating or technical layers of the future coating are laid directly on the prepared base.

Material preparation

Most often use cement and lime bases. Sand and gravel can also be used as thinners - their concentration depends on the requirements for the future coating. In the construction and design of pavement, local soil should also be used. For example, if soil stabilization is carried out with lime, then it will be appropriate to include stone materials that will create the necessary shock-absorbing strength. Another thing is that such additions must first be crushed with special cutters. Directly at the backfill site, the stabilization mass will be approximately 10-20% of the local soil, which will serve as the basis for the road surface.

Creating a mix

The specific recipe for the manufacture of the mixture is determined by the characteristics that must be obtained after completion of the work. For example, soil stabilization methods with a monolithic base require the achievement of such coating qualities as shear resistance and increased elasticity. As part of such mixtures, the mentioned cement-lime combination is usually used, which is also diluted with active ash and local soil. However, its main difference is the complete exclusion of rubble. As a result, other important properties are also achieved.coatings, among which are capillary-interrupting functions and an increase in heat-insulating performance.

Technically, the mixing operation is performed by special dosing machines. Modern technology allows you to perform mixing, taking into account the indicators entered through the electronic control panel. The initial parameters, according to which the road soil is stabilized, are pre-documented in the laboratory. Further, the information obtained becomes the basis for developing a recipe and preparing a strengthening mixture.

Material distribution over surface

Before this stage, special containers-distributors are prepared, into which the mixture is loaded. At the same stage, various modifiers can be added, through which the basic qualities of the mass are improved. On the job site, the equipment evenly distributes dosed binders based on cement and lime. Again, depending on the design requirements, soil stabilization can be performed with loosening elements, which will further provide a higher degree of compaction of the mass. In addition, auxiliary steps for preparing the mixture for distribution may be included before delivery. These can be the operations of working in, grinding and mixing the components of the mass. The possibilities of implementing these technological stages depend on the functions of a particular special equipment. Typically, multifunctional machines are used, provided with cam clutch mechanisms with protective valves that disengage whenoverloads.

Plowing the stabilization mass into the ground

The procedure can be performed by special equipment or manually. The choice of technology depends on the possibility of performing an operation near a residential area, a parking lot, an airfield site, or in bad weather. Most often, tractors with a three-point hitch at the rear are used for the final introduction of the material. Cutters interact directly with the active mixture - the action resembles loosening followed by compaction. Depending on the design solution, according to which soil stabilization is implemented, the construction of roads at this stage may include additional operations. For example, the operator can also distribute the water-emulsion binder component, which will also be worked into the soil as a separate active substance.

Conclusion

Technologies for the arrangement of road surfaces have special requirements for the formation of protective layers. The presence of high-quality insulation and drainage sprinkles allows you to protect the future road from many negative factors. In turn, the stabilization of the soil forms a kind of foundation, on which physical pressure subsequently falls. This seal must not only withstand stress, but also ensure the integrity of the overall structure of the coating. It is for this that viscous components are added to the stabilizing mixtures. In a single complex with lime and cement, they create a strong, frost-resistant anda permeable platform for a future road or site.