Geoalso known as lar confinement systems (CCS)âare widely used in construction for erosion control, soil stabilization on flat ground and steep slopes, channel protection, and structural reinforcement for load support and earth retention. Typical lar confinement systems are geosynthetics made with ultrasonically welded high-density polyethylene (HDPE) strips or novel polymeric alloy (NPA)âand expanded on-site to form a honeycomb-like structureâand filled with sand, soil, rock, gravel or concrete. Geo are used in Roads, Railways, Slope & Channel protection, Earth retention, Reservoirs & Landfills applications.