Cement Silo Repair and Upgrade Saraburi Central Thailand
Cormix was asked to evaluate and make recommendations for 6 cement silos refurbishment located in central Thailand. Some 30 years old the silos were exhibiting signs of detioration with spalling of concrete and cracks evident.
The climate in the region is particularly harsh with high temperatures, humidity and heavy rain through much of the year.
Working at these heights presented challenges to surface preparation product installation, finishing and safety.
Access was achieved via gondola especially prepared for the work
Prior to the work being carried out the initial survey had confirmed cracking and spalling of the concrete
This would require crack injection, removal of concrete to expose reinforcement and protect it, reinstatement of the surface with a high performance repair mortar before finishing with a anti carbonation coating.
The Repair Solutions
Cormix teamed up with its approved specialist contractor Reptec Services Company Limited to install its system.
Cracks were injected using a low viscosity two component Epoxy resin Condur SC the surface of cracks being sealed prior to injection with Condur EA1 surface Epoxy Seal
Delaminated spalling concrete was mechanically removed to expose reinforcement which was coated with a surface tolerant Epoxy coating Congard ST to provide long term protection to the reinforcement
The surfaces were then reinstated using a medium build smoothe polymer modified repair mortar Conpatch 600MCI which contains a migrating corrosion inhibitor
Once the silo was completely repaired it was coated with a Carbonation coating Elastodeck S providing both an aesthetically pleasing finish and future protection to the silo from water ingress and carbonation
Project Goals Achieved
The finished silos looked as good as new with little evidence of the works carried out to reinstate their integrity.
The Cormix repair system has reinstated the silos integrity to provide many more years of good service negating the need.