The Na-bonded soil conditioner, also called Na-bonded expansive soil, is a soil stabilization technique that uses sodium bonded with clay particles to form an expansive soil. The Na-bonded expansive soil is an inorganic, non-toxic and eco-friendly soil stabilizer that can be used for the reinforcement and improvement of weak and soiled soils, such as those found in landfill sites and coastal areas.
Na-bonded expansive soil is created by mixing sodium chloride with a clay-based soil. The chloride ions interact with the clay particles and form an expansive soil with a higher volume than the original soil. The result is a soil with improved strength, reduced compressibility and improved water drainage. The Na-bonded expansive soil also reduces surface erosion, allowing for the construction of safe roads and other structures.
The use of Na-bonded expansive soil dates back to the 1950s, when it was first used to stabilize the soil of runway and embankment walls. Since then, the use of Na-bonded soils has grown and is now used in a variety of fields, such as foundation construction, dam construction, road and soil foundation construction, and landfill site rehabilitation.
Since its first use, Na-bonded soil conditioners have been improved and enhanced in order to offer better performance. The addition of sodium carbonate, for example, has increased the compressive strength of the Na-bonded soil and decreased its swelling potential. Similarly, the addition of sodium polyacrylate has made the soil more resistant to water and improved its compactibility.
The use of Na-bonded expansive soil can offer a number of benefits, such as increased resistance to water and reduced compaction. It can also be used to stabilize soil that is prone to erosion and to improve the bearing capacity of the ground. Additionally, Na-bonded soils are much more cost effective than other soil stabilization methods, such as cement stabilization or geotechnical grids.
Overall, Na-bonded expansive soil is a cost effective and reliable technique for soil stabilization and foundation construction. The combination of sodium and clay particles creates a soil with improved strength, resistance to water and reduced compaction, allowing for increased safety and stability of the construction. With its eco-friendly nature, Na-bonded expansive soil is an increasingly popular option for a variety of applications.
