Post tensioning (PT) is a method of reinforcing concrete where high strength steel tendons are positioned in ducts prior to concrete being poured around them.
nce the concrete been poured and attained sufficient strength, the tendons are stressed using a pneumatic jack thus pre-compressing the concrete. By applying a compressive force to the concrete, the concrete has an increased capacity to carry loads and control deflection of the structure.
Post tensioning allows structures to span further with reduced structural depths thereby providing for larger column free spaces.
Key benefits off Post Tensioned Concrete;
Longer spans
Reduced structural depth – PT slabs are thinner that conventionally reinforced slabs
Reduced structural cost – PT structures are often more economical that conventionally reinforced structures for spans in excess of 7m
Their reduced structural depths also reduces load on columns and foundations
Rapid construction – PT structures allow for rapid cycle times
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