Case 4 Soil retaining wall
LCA Studies
The use of Geosynthetics leads to lower impact in all categories:
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~ 75% reduction of non-renewable cumulative energy demand (CED).
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~ 85% reduction of cumulative greenhouse gas emissions.
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Every 3 linear meters soil retaining wall (3 meter high) saves 30,000 MJ eq, which is equivalent to the energy consumption of one household per year.
At the same time, the use of geosynthetics generate cost savings (see graph below)
This study shows
The use of geosynthetics leads to:
-
lower impact in all categories
-
~ 75% reduction of Non renewable cumulative energy demand (CED)
-
~ 85% reduction of cumulative greenhouse gas emissions
-
Every 3 linear meters soil retaining wall (3 meter high) saves 30,000 MJ eq, which is equivalent to the energy consumption of one household per year!
LCA case 4
Cost comparison
Cross section
Retaining concrete wall reinforced with steel (strength class B300)
Soil wall reinforced with geosynthetics (LTDS 14 kN/m)
Bridge abutment reinforced concrete
Surface
Retaining wall reinforced with concrete
Soil wall reinforced with geosynthetics