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For many facility managers, an aging silo can feel like a ticking clock. When cracks appear, concrete spalls, or steel shows signs of advanced corrosion, the immediate fear is often the price tag of a total replacement.
However, at Marietta Silos, we believe the most sustainable and cost-effective path is often found through precision engineering and advanced restoration. The key is knowing what to look for before a minor issue becomes a major, and costly, problem.
At Marietta Silos, we've been restoring concrete silos for over 100 years. Here are the warning signs that tell us a silo needs professional restoration sooner rather than later.
Visible Cracking or Spalling on Concrete Walls
Surface cracks may look minor, but they rarely are. Cracking and spalling in concrete walls can signal overstress of internal reinforcing steel. If left unaddressed, that damage accelerates. Water infiltrates cracks, steel corrodes, and what started as a hairline fracture can evolve into a full structural failure. If you're seeing vertical wall cracking, exposed rebar, or chunks of concrete breaking away from the wall surface, it's time to call in a professional.
Wall Bulging or Bowing
Visible bowing of silo walls is a serious red flag. Bulging can be caused by asymmetric material flow that increases pressure along the wall, or by silos that were not originally designed for their current use. Whatever the cause, bowing walls can quickly progress to wall failure and complete silo collapse. This one should never be ignored.
Corroded or Missing Hoops on Stave Silos
For concrete stave silos, the hoops holding the structure together are critical. Corroded, damaged, or missing hoops compromise the structural integrity of the entire silo. If your stave silo's hoops are showing significant rust or are missing sections altogether, rehooping should be scheduled without delay.
Deteriorating Roof or Beam Pockets
The silo roof takes constant abuse, from overfilling, weather, and structural load. Spalling concrete around roof beam pockets is a particularly urgent warning sign, as deterioration in this area means the roof beam can no longer be properly supported, putting the entire roof at risk of collapse.
Discharge Cone Issues
Silos built with older suspended steel cone designs carry a documented high failure rate. If your facility is still operating with a suspended cone, remediation should be a priority. Cone failure can trigger complete silo failure, and there's no graceful way for that to happen.
Advanced Restoration Techniques
When a silo is structurally unsound, standard repairs aren't enough. We utilize high-level engineering interventions that can return a silo to its original load capacity, including:
- Post-Tensioning: Installing high-strength strands around the exterior to replace or supplement original steel reinforcing.
- Composite Fiber Reinforcement: Utilizing the Wabo® system to strengthen concrete and masonry without the need for heavy equipment.
- Shotcrete-Gunite: Applying high-pressure mixtures that bond 100% to cleaned concrete, offering weather and chemical resistance.
When Restoration Isn't Enough
Sometimes a thorough inspection reveals that restoration alone won't solve the problem, especially when a silo has been repurposed to store heavier materials, or when deterioration has advanced too far to remediate economically. In those cases, Marietta Silos can take you through engineering and new construction using Jumpform, Slipform, or concrete stave methods.
As the only firm in the country that handles every aspect of silo work, from design through construction and restoration, we can help you make the right call for your operation and your budget.
Don't wait for a visible failure to act. If your silo is showing any of these warning signs, contact Marietta Silos for a professional assessment. Our silo restoration experts bring decades of hands-on experience, and our team is available for emergency response when time is critical.
While the end of the year is often chaotic, it's a good time to make sure silo maintenance services like restoration and repair are included in your facility production schedule. Repairing silo problems quickly, before they become an emergency, helps save money and can reduce or eliminate safety issues. Investing in professional silo inspections and restoration is a cost-effective solution, as it can lead to long-term savings, reduce liability, and minimize unplanned downtime which can result from silo failure if issues are not addressed quickly.
The potential repercussions of emergency silo problems can be devastating, ranging from unexpected downtime and loss of income to complete silo failure and even fatalities. Taking care of small problems quickly can help keep the cost of owning a silo to a minimum since major repairs, catastrophes, and structural issues require more money and time to fix and can cause downtime that was not planned.
Many silo repairs need design and engineering input. We boast restoration supervisors with more than 50 years of experience designing and building a restoration project right the first time. We make sure to trace the source of damage to the silo during any rehabilitation project and use those results to inform our design process to stop any future harm.
Mapping silo restoration services into periods of planned downtime is also a great way to keep costs low. Planning regular check-ups during the more moderate months can save you money by spotting potential issues early and lessening the amount of time you spend offline. Building silo restoration into temperate times of the year, like the spring and fall, tends to provide better working conditions for a variety of silo repairs. These ideal weather conditions can make a repair or restoration go more quickly - reducing the cost of labor and your downtime.
To reduce silo repair costs further, complete your silo inspection and silo restoration or silo repair in one mobilization with the Marietta Silos, or USA Silo Service, Mobile Inspection Trailer. Finishing small silo repairs at the same time as your silo inspection reduces additional unplanned downtime and additional trips necessary to get your silo back up and running.
Contact us to schedule your next silo repair, restoration, or inspection.
A great way to preserve silos, silo roofs, and steel bins is by adding a protective coating to the exterior of the structures. In addition to being preventive, this coating can be used as a repair method to fix minor issues.
The most effective type of coating is a monolithic barrier that forms a direct bond to surfaces, like the rubberized coating offered by our sister company USA Silo Services. In addition to providing a direct bond, the USA Silo Services rubberized coating has a high elasticity coefficient that moves with silo vibration caused during loading and unloading. In addition, our silo roof-top coating has the flexibility to maintain its integrity through the changing seasons and protects against oxidation, humidity, and corrosive environments.
Our roof-top silo coating method is a proven industrial roof coating system that keeps elements out and stored materials dry. It reduces costly reapplications of surface protectants and can be applied to many surfaces.
Learn more about the benefits of the USA Silo Services rubberized industrial coating in their latest blog.
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