About Pre-Mixed Stabilized Soil
By adding a stabilizer, the required water, and additives to the pre-processed soil (geotechnical) or mud, and then blending them uniformly with a specific mixer, the mixture is compacted and cured to solidify into a geotechnical engineering material with certain strength, water stability, and low permeability.
About Ready-Mixed Flowable Soil Stabilization (Flowable Soil Stabilization)
The mixed material we produce is a fluidized stabilized soil, which can be cast for construction purposes, abbreviated as "Flowable Stabilized Soil."
Characterization of Construction Properties for Fluidized Soil Stabilization
Some use the slump of concrete measured by a slump cone to characterize the workability of fluidized stabilized soil mixtures. In reality, the particle size of fluidized stabilized soil is typically smaller and generally not suitable for testing with a concrete slump cone, unless it contains coarse soil or other materials with particle sizes greater than 20mm. Furthermore, using slump alone to characterize workability has significant limitations, especially for mixtures with high fluidity (such as slump values exceeding 240mm), where it is difficult to further differentiate the workability of the mixture. In such cases, the use of expansion can serve as a good supplement and facilitate quality control. However, there is relatively little research on the correlation between the expansion of fluidized stabilized soil and its workability.
The current index suitable for testing the workability of fluidized soil mixtures is fluidity, which can be defined as: the diameter of the cake formed when the fluidized soil mixture collapses and spreads from a specific test cylinder.
However, there are several types and sizes of test tubes used to measure the fluidity of mixing logistics, such as frustum tubes, with common dimensions being: an inner diameter of 50mm at the top, 100mm at the bottom, and a height of 150mm; cylindrical tubes commonly used in Japan, with an inner diameter of 80mm and a height of 80mm; and cylindrical tubes commonly used in the United States, with an inner diameter of 75mm and a height of 150mm. The fluidity of the same mixture can vary under the testing conditions of three different types of test tubes. Based on our research, we recommend using a cylindrical tube with an inner diameter of 75mm and a height of 150mm. This is because the testing operation is relatively simple, and the distinction between test results is more pronounced.
By employing this testing method, the stabilized soil mixtures can be roughly categorized into three groups based on their flowability.
◆ Flowability < 120mm, plastic mix.
◆ Flowability: 120-220mm, fluidity mixtures.
◆ Flowability > 220mm, high flow concrete mix.
It should be noted that the aforementioned categories are rough and do not have strict boundaries. Under certain construction requirements, the flow control of different stabilized soil mixtures may not be the same. Stabilized soil mixtures have significantly different rheological properties compared to concrete mixtures, necessitating more detailed research and analysis.
