Alkalization
Improves soil prone to deformation under external loads and water infiltration. Specifically, clay, anthrosol, loess and loam. This particular method helps to cut spending in agricultural, industrial, infrastructure and residential construction.
stabilizes weak soil, so that it can support future building. Alkali solution is pumped into poor soil through a screw pile or perforated pipe. A chemical reaction with alkali changes soil composition and improves load-bearing capacity. It can turn weak clay into rocky soil ready for construction.
Alkalization can be used on soil that has no more than 5% organic matter. Including clay soil, soil weakened and polluted by mining, agricultural, industrial activity and soil damaged by water.
Alkaline soil stabilization saves 20–60 %
Improvement cost per 1 m3
Immediate pipe wash after removal
Organic matter in soil > 5%
Loess in soil Sr > 0.75, K < 0.1 m/day
In some cases instead of stabilizing a pile foundation can be used. Piles "cut through" unstable soil until they reach a deeper solid layer. For foundations built on alkalized sites a pile 2–3 times shorter can be used, which cuts building expenses by 20–60%.