Many outside of the construction industry might assume that we build any building right where we choose. Often they are not aware of, or never consider, the labour that is required just in preparing the ground to receive the foundation and, of course, the building. Without proper preparation, the building being constructed is liable to be unbuildable and prone to collapse.
The Process of Soil Stabilisation
In order for the ground to be made ready to build upon, the soil itself has to be easy to work with. It also has to be made ready to handle the weight of the load which is going to be placed upon it. Lime is used to not only strengthen, but also improve the workability of both the soil and ground.
This makes it easier for labourers to manipulate it properly for the job at hand. Quicklime will eliminate moisture from wet soil and this will not only improve the surface area, it will also reduce waiting time considerably.
Lime is also perfect to use in the preparation of the earth underneath motorways and roadways which are in the process of being constructed, as well as many other man-made surfaces. It will raise the amount of weight that can be handled by the surface as well as make it more stable and durable.
Lime is a great choice for soil stabilisation on a short term basis as far as altering the properties of soil are concerned. It is even effective in stabilising soils that are of a finer grain and consistency. However, it is with soils that are clay based in their makeup that lime has proven itself to be the most effective. It creates changes in the workability of the thick, paste-like soil that gives it a high level of tolerance for being worked with more easily. Modifications themselves take place due to calcium cations, which are released from the lime to replace depleted cation. These are typically present on the surface of the ground as a result of a high Ph level. As a direct result, the mineralogy of the clay surface is changed, providing the builder with a much more consistent base on which to work.
Benefits of Stabilisation & Modification
The following are completed and provided through the above technique:
• A solid platform that is workable and able to be properly constructed upon
• A reduction in plasticity
• Stability of the site and working ground is improved
• Capacity to hold moisture is reduced
• Swelling is reduced due to the reduction in moisture held
The main benefits of ground stabilisation and modification are the strength that is gained and provided, ensuring the quality of the project and the safety of the builders. This strength tends to last a very long time, even under the most severe weather conditions.
Short term benefits include gaining time that would otherwise have been lost in the construction process and ground that can be made into a consistency that is workable, durable, dependable, and efficient.