Geoscience Reference
In-Depth Information
Table 1 Technical Data of Geotextile Type PEC200 Manufactured by Polyfelt
Properties
Unit
PEC200
Type of product
Composite geotextile
Material
Mechanically bonded PP nonwoven/
high-strength PET yarns
Orientation of reinforcement
Unidirectional
Tensile strength (MD * /CD )
KN/m
200/14
Elongation at break
%
(MD * /CD * )
13/60
Tensile strength (MD)
at 2%
kN/m
30
at 3%
kN/m
45
at 5%
kN/m
72
at 10%
kN/m
168
Long-term design strength
(120 years) (MD)
kN/m
85.1
Thickness
mm
2.9
g/m 2
Mass
580
Data provided by Polyfelt.
* M.D. ¼ Machine direction in weaving.
C.D. ¼ Cross-machine direction perpendicular to machine direction.
the front wall is 4.1 m. The wall is sloping down from the front face of the
wall to the back at a slope of 1:2. A reinforced concrete slab 0.8m thick was
also placed on the sloping top of the RE wall, similar to the RS wall. Precast
reinforced concrete panels and ribbed metal strips are used for the facings and
reinforcements, respectively, for the construction of the RE wall. Table 2
shows the specifications of the reinforced concrete facing panels and metal
reinforcement strips used for the construction of the full-scale reinforced earth
wall at the test site.
Strain gauges, total pressure cells, and accelerometers, similar to those used
by Richardson (1976), were installed in the full-scale RS wall to measure tensions
in the geotextile, horizontal earth pressure in the backfill and acceleration in front
of the RS wall, respectively. The strain gauges, total earth pressure cells, and
accelerometers were monitored dynamically during blast events. The
instrumentation program was intended to provide a field dynamic response of
RS wall for comparison with earlier numerical results by other researchers, and
with FEM simulations later. No instrumentation was provided for monitoring
 
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