Geocomposites

Geocomposites

TERRAM Frost Blanket

Application Function

Drainage

Market Sectors

Highways

Frost-susceptible soils typically have a significant silt/fine sand content which allows the capillary rise of water. This water can turn to ice lenses in winter and further water is drawn up from the water table to balance the capillary forces. This cycle ultimately leads to heave at the surface which causes pavement cracking and uplifting.

This is further complicated as the upper ice thaws in winter. The volume of water held as ice is many times greater than water held by the soil under saturated conditions. The water cannot drain down through the soil as it is still frozen. The result is a further weakening of the highway as the subgrade’s ground-bearing capacity is diminished.

TERRAM FSB is a net-based geocomposite which provides the capillary break that the soil lacks and thus prevents the upward movement of water. Its installed cost is insignificant when compared with annual maintenance costs associated with such highway pavements.

TERRAM Frost Blanket has been installed with great success on a number of significant projects around the world including Kazakhstan and Siberia.

Installed horizontally, the TERRAM Frost Blanket is a purpose-designed, protection geocomposite for mitigating the effects of frost heave. It forms a capillary break to prevent the rise of groundwater into the frost zone thereby reducing the potential for damage as a result of the freeze/thaw cycle (frost heave).

TERRAM Frost Blanket geosynthetic preventing frost heave


Downloads

TERRAM Highways & Roads
TERRAM geocomposites
FROST BLANKET
FROST BLANKET. Frost heave control beneath highway & railway. (Kashagan Oil Field)