Donald W. Pfeifer

Donald W. Pfeifer's Posts

Sealers or Overlays?

If your problem is protecting rebars by keeping deicing salts or wind-borne or water-borne sea salts out of concrete, don't select a sealer without considering the use of a concrete overlay. And just as important--don't select an overlay until you've thought seriously about using a sealer. Read more

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Steel Corrosion Damage on Vertical Concrete Surfaces Part II

To date there is not a large body of experience with repair of cracked and spalled vertical surfaces in architectural-quality structures, so repair and restoration work on these surfaces has been adapted from procedures that have proved effective for bridge and parking deck repairs taking into account the added difficulty of working on vertical surfaces to which access is frequently difficult. Read more

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