Silos Get Stressed Out!
Proper material flow in silos is important for more than just production schedules. Issues with material flow can cause increased stress on silo walls that may go beyond what the silo was designed to withstand. Not only does this cause cracking, spalling and possible wall separation, it can also lead to structural failure.
Silos that were initially designed with internal reinforcement sometimes face cracking or delamination of the concrete. When this is seen on the silo exterior, it is important to schedule a silo inspection as soon as possible. Such damages are often caused by overstressing of the horizontal reinforcing as a result of material flow issues.
What is silo post-tensioning?
Tension is a critical component in silo repair. If the silo is still structurally sound, certain damages caused by failing interior steel reinforcement can be repaired by post-tensioning. Post-tensioning silo repair uses high-strength post-tensioning strands that are placed around the exterior of the silo. These tensioned bands essential take over the structural support of the original internal steel by keeping walls sturdy against additional stress caused by asymmetric flow.
During this restoration process, a qualified engineer uses factors such as silo size, stored material weight and how the silo is used to determine tension specifications necessary specifications for wall reinforcement. After the strands are properly tensioned through a hydraulic process, steel lock couplers are positioned and tightened. Once completed, the tensioning assures that the silo can be safely used. Once the silo is restored through post-tensioning, it can then be returned to its actual load capacity.
Request a silo repair quote by scheduling your inspection today.
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