Installation of TENAX TENDRAIN for road drainage
Backfilling of fill soil over installed TENAX TENDRAIN
It is a well known fact that water in pavement
systems is one of the principal causes of premature pavement failure.
To prevent pavement failure, you need to quickly remove migrating
fluids through a drainage system engineered for the life of the
One solution for drainage incorporates a free-draining
base aggregate into the pavement system, but this typically requires
an asphaltic or cement stabilisation binder to facilitate construction.
In addition, a granular layer or geotextile filter is required to
prevent migration of subgrade fines into the open-graded base.
Frost heave and subsequent thaw is another problem caused by poor
drainage. The main problems associated with frost heave are the
costs of repair and maintenance, possible restrictions on vehicle
The traditional geotechnical
solution has always been to remove the frost susceptible soils down
to frost depth and replace them with non-frost susceptible material.
This requires extensive excavation and additional costs when suitable
structural fill is not readily available.
TENAX TENDRAIN's engineered
solution to improve drainage and/or reduce frost heave potential
incorporates a compressive resistant, void-maintaining drainage
system into the pavements structure.
TENAX TENDRAIN geocomposite provides: a
high degree of compressive stiffness to support traffic; rapid fluid
transmission characteristics, equivalent to free-draining base;
significant air void to provide a positive capillary break.
TENAX TENDRAIN also possesses
high tensile strength and modulus, allowing it to provide base reinforcement and subgrade restraint in addition to drainage and separation.
TENAX TENDRAIN is easy to install across the road section. For either
paved or unpaved roads, for railway track beds, and in particular,
for soft soils, TENAX TENDRAIN can be installed between the foundation
soil and the upper layer of inert material.
The geocomposite separates the two soils and avoids contamination
between inert material and clay particles, preventing any accumulation
of water and thus allowing for a well-drained and dry base having
higher mechanical properties, design life and with no water inclusion
and thus the road section is not frost susceptible.
TENAX TENDRAIN for infiltrated and subgrade water removal and capillary break protection for paved roads.