Construction of new solidified soil

In the rapidly evolving landscape of civil engineering, innovative materials and techniques are constantly being developed to meet the increasing demands for durable, cost-effective, and environmentally friendly construction solutions. Among these, new-type solidified soil has emerged as a promising option, offering a blend of strength, versatility, and sustainability. This article delves into the construction process and benefits of utilizing this advanced material.

1. Overview of New-Type Solidified Soil

New-type solidified soil represents a significant advancement in soil stabilization technology. It involves the use of specially formulated solidifiers, combined with water and locally sourced soil, to create a highly durable and cohesive mixture. This innovative material is designed to enhance the mechanical properties of soil, making it suitable for a wide range of construction applications.

2. Preparation and Mixing

The preparation of new-type solidified soil begins with the careful selection and screening of soil materials. Ideally, the soil should be sourced from the project site or nearby areas to minimize transportation costs and environmental impact. The soil is then sieved to ensure a particle size distribution that meets the project specifications, typically with a maximum particle diameter not exceeding 50mm and an organic content of less than 5%.

Next, the solidifier—a key component in the process—is mixed with water to form a slurry. This slurry is then combined with the prepared soil in a specialized mixing equipment. The mixing process is crucial, as it ensures a homogeneous mixture that possesses the desired flowability and self-compacting properties. The mixing time should not be less than two minutes per batch to guarantee thorough integration of the components.

3. Placement and Compaction

Once the mixture is ready, it is transported to the construction site using pumps or chutes. The placement of new-type solidified soil is typically done in layers, with each layer not exceeding 0.5 meters in height for optimal compaction and curing. This layered approach allows for better control over the material's uniformity and strength development.

Compaction is a vital step in the construction process, as it helps to eliminate voids and increase the density of the soil mixture. Compaction is usually carried out using mechanical rollers or vibratory compactors, with the number of passes typically ranging between 3 to 5, depending on the soil type and project requirements.

4. Curing and Maintenance

Immediately after placement and compaction, the new-type solidified soil requires curing to allow for the proper hydration and strength development of the solidifier. Curing involves covering the surface to prevent excessive moisture loss and is typically maintained for at least seven days. During this period, it is crucial to avoid any mechanical or pedestrian traffic to prevent damage to the curing soil.

5. Advantages and Applications

The advantages of new-type solidified soil are numerous. It offers a cost-effective alternative to traditional construction materials, reduces the need for excavation and disposal of waste soil, and promotes sustainability by utilizing locally sourced materials. Furthermore, its high strength and durability make it suitable for a variety of applications, including road base stabilization, trench backfill for underground utilities, and embankment construction.

In particular, its use in trench backfill operations after underground piping installations ensures a smooth and settlement-free surface. The material's ability to conform to irregular shapes and compact well under pressure makes it an ideal choice for such tasks.

6. Conclusion

New-type solidified soil represents a significant leap forward in soil stabilization technology, offering a versatile and sustainable solution for modern construction challenges. By carefully selecting and preparing the soil materials, mixing with specialized solidifiers, and adhering to proper placement, compaction, and curing procedures, engineers can create a durable and cost-effective construction material. As the demand for innovative and environmentally friendly construction solutions continues to grow, new-type solidified soil stands out as a promising option for the future.