WHAT CAUSES CONCRETE DECAY?
External influences, manufacturing faults or defects in workmanship, constructive shortcomings or combinations thereof may result in serious concrete decay.
FOR ETERNITY Concrete is used wherever protection and safety are requested. Foundations, bridges, tunnels or skyscrapers have to withstand strongest environmental influences. Even concrete, formerly promoted as being »forever«, is not spared from decay. CONSTRUCTIVE DEFICIENCIES DURING THE BUILDING BOOM The use of concrete has been increased since the middle of the 20th century. But at that time quality requirements and technologies were not at today‘s level. So, you may come across older concrete buildings with ageing phenomena and decay such as spalling and corrosion. The causes are manifold, entailing a considerable need for renovation.
HAZARDS In the course of time concrete is attacked by
weathering and thus allows water and pollutants to enter. Moss and algae growth lead to visual short- comings and increase the damaging effect. A high water absorption in combination with frost will destroy the structure of the concrete causing rust on the reinforcement and leads to considerable damages.
OVERVIEW OF HAZARDS – Weather – Water – Shallow depth of cover – De-icing salts – Constructive deficiencies
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