Concrete Repair & Restoration
Concrete Repair is a key component of many structural stabilization, restoration and strengthening projects. Over time, the repair of concrete structures becomes a necessity as deterioration of the embedded reinforcing results in cracking and spalling of the concrete elements. If left un-abated, failure will eventually result.
The prime factors in concrete deterioration are air and moisture which result in carbonation of the concrete & chloride attack of the reinforcing. Both carbonation and the presence of chlorides destroy the natural alkalinity of the concrete resulting in corrosion and subsequent expansion of the embedded reinforcing. A less common form of concrete deterioration is seen in the form of alkali silica reaction which results in the paste around the aggregate turning to a gell - the subsequent expansion causing cracking and spalling.
The need, and sometimes urgency, to undertake most concrete restoration projects is due more to protecting the public and property from falling hazards as opposed to any type of imminent structural failure. Strict ordinances are in place from many local authorities and governing bodies to ensure that building owners undertake inspections at predetermined intervals by a professional.
With any concrete repair project identifying the source of the problem, developing a scope, selection of materials and method of repair are essential to the success and achieving the desired end product.. Measures must also be taken to ensure that the source of the problems are addressed and thus prevent re-occurence in the future.