We were contacted at short notice after our client had been let down by another contractor. The silo bases was leaking causing damage to the stored grain and preventing the proper emptying and operation of the silo. The works had to take place immediately in late December, presenting challenges for undertaking the works.
Previous coatings including a poorly adhered silicone coating and aged bitumen also presented further challenges.
We proposed the application of our proven silo base waterproofing solution in the form of Corrolastic SG. This offered the following benefits for this application;
Initially all loose and poorly adhered existing coatings were removed by method of high pressure water jetting at 10,000 psi. This removed the vast majority of the existing silicon and bitumen waterproofing materials.
Once prepared all surfaces to be coated were blown down using leaf blowers to ensure that surfaces to be coated were sufficiently dry. We were fortunate that on the day of application the ambient temperature was close to 10 degrees centigrade, unusually mild for the time of year.
Corrolastic SG was applied to all surfaces to be waterproofed by method of slurry brush. At the interface between the steel and concrete a reinforcing bandage was embedded prior to overcoating using the same material.
As these silo base waterproofing works were an emergency temporary measure only part of our silo base waterproofing system was applied, with a planned return in the summer months planned to complete the works.
Following completion of the works the silo was returned to service and filled prior to the Christmas shutdown as required by our client.
