The In-Situ Stabilization of Sludge technology is a method that transforms sludge into a stable and solid foundation without the need for transportation. It utilizes stabilizers to solidify the sludge and other soil materials on-site, achieving a certain level of strength or other usage requirements. This allows for the on-site utilization of the soil or meets the requirements for foundation treatment.
Advantages: Avoid soil waste and displacement, achieve the purpose of resource conservation, recycling, and environmental protection.
Application Scope
Application in Foundation Treatment Engineering
(1) Rapid formation of hard cap layers on ultra-soft soil foundations such as reclamation fill soil—artificial hard cap.
(2) In-situ shallow solidification in place of replacement filling method.
(3) In-situ shallow solidification combined with composite foundation application for deep treatment of soft soil foundations. It can replace sand cushion layers and pile caps.
2. The resource utilization of dredged soil, sludge, and other special soils or waste materials
Utilization of solidified sludge after disposal.
Utilization of sediment from river and channel dredging after solidification.
3. Soil Pollution Treatment
(1) Contaminated soil stabilization and isolation storage.
Chemical Neutralization of Toxic Soils and Waste Materials
4. Miscellaneous
Slope stabilization, retaining wall construction, etc.
The In-Situ Stabilization of Sludge technology refers to the treatment of sludge through specific technical means to enhance its bearing capacity and stability, enabling it to support the weight of buildings. The basic principle involves injecting a stabilizing agent into the sludge, which then undergoes a chemical or physical reaction to solidify the soil, thereby strengthening the soil layer. Specifically, the in-situ stabilization of sludge is typically divided into two methods: chemical stabilization and physical stabilization. Chemical stabilization primarily induces chemical reactions in the soil using different types of stabilizing agents, resulting in a solidified mass. Physical stabilization, on the other hand, involves introducing reinforcing materials such as steel wire mesh to combine the soft soil with the reinforcing materials, forming a solid soil mass. The in-situ stabilization of sludge technology has broad application prospects in engineering construction and infrastructure development. It can be used for road, bridge, drainage system construction, and foundation treatment for various buildings. Moreover, this technology can also be widely applied in marine engineering, such as strengthening the stability of submarine pipelines.
Advantages of In-Situ Soil Stabilization Technology
Compared to traditional foundation treatment techniques, in-situ clay stabilization offers numerous advantages. Firstly, it minimizes environmental impact by avoiding extensive excavation, thereby reducing damage to the surrounding environment. Secondly, it excels in load transfer and is easy to construct, with a short project duration, significantly cutting down on construction costs. Additionally, the technology is versatile, suitable for soil treatment under various types of geological conditions.
