Pillar restraint
Restraint operation is done to improve pillar compression strength.
It’s done by carrying out binding or bracing on the whole surface in order to create a stiff armor than counteracts the vertical expansion of concrete: as the concrete cover cannot detach itself from the pillar under high stress conditions, the concrete section is preserved resulting in increased resistance.
The most effective operations are carried out on circular section pillars: they do not have corners which lead to an uneven distribution of stress on the bracing and cutting pressure which carbon is not suitable to resist to. In case of square or rectangular-section pillars it’s always best to round off the edges in order to achieve a radius of at least 2 cm: this way the negative effect of corners is reduced.
Products for pillar restraint:
