StabilRoad process

Engineering and geological surveys are necessary to study the geological structure of the site, the physical and mechanical characteristics of soils, their bearing capacity, corrosiveness, hydrogeological conditions and predicting their changes during the construction and operation of roads, ensuring measures to protect structures from the adverse effects of the geological environment, physical and geological processes and phenomena.

One of the most important stages in the production of work using this technology is laboratory research. Highly qualified laboratory specialists analyze the available soil. The composition of the soil, its physical properties and its compatibility with stabilizing additives are determined, due to the introduction of which the road acquires density, resistance to erosion and bearing capacity. As a result of laboratory analysis, the required amount of binder per square meter of surface stabilization is calculated, calculated depending on laboratory tests, soil type and future load.

The binder is spread to the ground using a special dispenser, which allows you to control the dosing accuracy up to 5%, which guarantees a thorough and high-quality soil treatment. Thanks to this approach, the uniformity of the resulting road base is ensured.

Work on strengthening natural soils is carried out by specialized machines – recyclers, the main working body of which is a milling drum with a large number of carbide cutters. The rotating drum crushes the layer of stabilizer powder distributed in front of the recycler. In the process of processing, the recycler mixes cement with the crushed material of the existing ground cover in one pass; under difficult technical conditions, a repeated passage of the recycler is required for high-quality mixing. In the second pass, the recycler mixes the stabilizer with the existing subgrade, which has been added with cement, under difficult technical conditions, re-passage of the recycler is required for good mixing. Then the resulting surface is rolled with a road roller.

At this stage, ramming is performed to ensure the subsequent passage of the grader, profiling the surface according to the customer’s project.
Pre-ramming is carried out in one pass over the surface treated by the recycler. Next comes the irrigation of the surface in order to provide the required amount of water to hydrate the cement. In the case of a rotary cultivator installed, the soil is irrigated after milling. In the case of a self-propelled rotary cultivator, irrigation occurs simultaneously with milling. Next, the grader grades the road according to the foreseen project or the customer’s requirement, and grades the road for the best performance (correct water outflow, etc.).

The final ramming of the surface of the stabilized base takes place in several passes using a roller, the weight of which depends on specific conditions, such as the thickness of the processed layer. Next, the grader grades the road according to the project or customer’s requirement, and grades the road for the best performance.

Despite its apparent simplicity, this method requires experience, all stages of work are subject to mandatory technical supervision, strict adherence to the implementation technology and constant laboratory control at all stages of work. Many years of experience have shown that there are no universal additives and formulations. Therefore, StabilRoad selects the optimal composition of components for each object. All work is carried out in accordance with state standards: SNiP 3.06.03-85 and GOST 23558-94.