Hydrated lime, also known as slaked lime or calcium hydroxide, serves various purposes in the construction industry. One of its primary applications is in soil stabilization. This process involves mixing hydrated lime with soil to improve its strength, durability, and load-bearing capacity. It is commonly used for road construction, where it helps to prevent the formation of potholes and increase the longevity of the road surface.
In addition to road stabilization, hydrated lime is also used in the construction of earthen dams. By adding hydrated lime to the soil, it helps to reduce the permeability of the dam, making it less susceptible to water seepage. This is crucial for maintaining the stability and integrity of the dam structure.
Airfield construction is another area where hydrated lime finds significant use. The lime is mixed with the soil to create a stable base for runways, taxiways, and other areas of the airfield. This helps to ensure that the surface can withstand heavy aircraft loads and provides a safe and stable landing area.
Building foundations can also benefit from the use of hydrated lime. It is used to stabilize the soil beneath the foundation, enhancing its load-bearing capacity and minimizing settlement. This is particularly important in areas with weak or expansive soils, where the foundation may otherwise be prone to shifting or sinking.
Another notable use of hydrated lime is in soil sweetening or pH adjustment. When added to acidic soils, hydrated lime helps to raise the pH level, making the soil more alkaline. This is beneficial for plants that thrive in neutral to slightly alkaline conditions. By sweetening the soil, hydrated lime can improve plant growth, nutrient availability, and overall soil health.
To summarize, hydrated lime is a versatile material with various applications in construction. Its primary uses include soil stabilization for roads, earthen dams, and airfields. It also serves to enhance the load-bearing capacity of building foundations. Additionally, hydrated lime can be employed to raise the pH of acidic soils, promoting healthier plant growth.