Durability
High strength precast concrete components are cast under controlled conditions
in the precaster’s plant. When precast concrete elements are
prestressed, concrete is cast around highly tensioned pretensioning strands
that run through the steel forms. After the concrete has cured, the pretensioning
force is released into the beam placing the concrete in compression.
Prestressed slabs and beams are virtually crack-free and highly resistant to
attack by chloride ions