Home > Products > Construction & Decoration > Other Construction Materials

Manufacturer of prefabricated vertical drain/PVD for ground improvement

Prefabricated vertical drains, also known as wick drains, are one of the most commonly used techniques to make soft compressible subsoil with a low bearing capacity constructible. Vertical drainage together with a surcharge reduces the time of settlement substantially. Area’s that are sensitive to settlement are characterized by a high water content as well as an open structure between the grains. When loads are placed, excess pore pressures are formed because of the low permeability of the soil layers. Without taking measures, this excess pore water will flow out very slowly. This leads to a long period with high settlements and possible stability problems when loads are being placed too soon. Sunzo’s vertical  drainage system consists of a synthetic prefabricated vertical drains that are being installed vertically from the surface level up to the bottom of the weak layer. This creates vertical drainage paths in the subsoil that shorten the drainage path of the excess pore water considerably. Vertical drainage results in a reduction of the consolidation process from tens of years to half a year or even less. It will also increase the stability which makes it possible to place embankments faster.

Soil consolidation is a requirement for stable structures in Civil engineering. Achieving soil consolidation requires drainage and time. There are a couple of ways to speed soil consolidation; prefabricated vertical drains and preloads.
Sunzo installs prefabricated vertical drains (wick drains) to help speed consolidation of base soils. Wick drains are pressed into soft soils to add drainage to the soil mass so that consolidation occurs quickly. Depending on available time the consolidation of soils under bridge abutments and embankments can be accelerated to meet project requirements. Preloads are another method used to consolidate soft soils. 

Manufacturer of prefabricated vertical drain/PVD for ground improvement