2009-2011 Rehabilitation of Arzni Shamiram, Low Hrazdan, Artashat and Shirak Main Canals

The canals were rehabilitated within  their own frames.

The following was implemented for rehabilitation:
– Clean the canals from sediments and vegetation;
– Demolition of concrete offsets;
– Clean the canal bottom and walls of deteriorated concrete;
– Fill in the cavities with B7.5 class concrete
– Cover the bottom of the canal with B 12.5 concrete
– Cover the existing concrete with 10cm of B 12.5 concrete on the trapezoidal parts of the canal, etc.
– Plan transverse joints of 4m from each other all along the canal
– Repair water dischargers by installing new valves
– Dismantle the existing slabs and install new ones, replace reinforced concrete slabs in the places where the walls are covered where (3×1.5)m reinforced slabs
– Create a preparatory layer of B 7.5concrete behind the slabs.