Prevention & Repair of Poorly Bonded Concrete
For two surfaces to bond together, the conditions for adhesion must be right. Generally speaking, the joint should be stronger than the surrounding area, however, under certain conditions, the reverse can happen - resulting in a weak bond that allows the two surfaces to separate.
These problems can be overcome in internal areas through the use of a wet to dry bonding agent such as MasterEmaco® P 157 - an acrylic-latex bonding agent additive that allows the application of a bonding slurry to a previously wetted surface. Alternatively, MasterEmaco® 2525 permits application to both wet and dry surfaces - thereby achieving a high joint strength in all circumstances.
For existing poorly bonded or ‘drummy’ concrete - where the work cannot be removed - repairs may be possible through crack injection. To discuss your crack injection requirements further please be in contact for more detail.