Question

The shear strength between a geotextile and a geonet can be quite low and troublesome when used in side-slope design. Describe two methods by which the geotextile can be attached to the geonet to avoid the potential problem. Include the advantages and disadvantages of each method.

Answer 1

Solution :

1)Using bentonite between two geonet and geotextile for bonding and increase the stability.

Advantage:

a)Increase the shear strength.

Disadvantage:

a)Increase cost

b) problums in drainage

2)Using geotextile adjacent to biplanar geonets.

In this ribs of geonet not perpendicular each other.

Advantage:

a) Better drainage,and stability

Disadvantage;

a)Increase chocking problum

b)Increase cost