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WHY CHOOSE CONCRETE OVER PLASTIC BAR CHAIRS?
We realize that your purchase decision is based on hard facts, let us point out some of the advantages that our rebar spacers offer you and your build site
SUPERIOR COMPRESSION RESISTANCE
Our rebar chairs have a resistance of 5000psi on average (certified by independent labs), plastic doesn't come close to this load resistance, therefore you will only need to place half the units per square meter in comparison to plastic positioners, saving you instalation time and money
Plastic interferes with your structures homogeneity, every point where you install a plastic spacer is a point where you´re not giving concrete a chance to bond with each other, interrupting the continuity of your structure and therefore diminishing total designed load bearing capacity.
INCREASED CORROSION PROTECTION
Due to the difference in thermal expansión and contraction coefficients from plastic and concrete (concrete can reach up to 70°C in its hardening phase), plastic cools down faster, shrinking more than its surrounding concrete, leaving gaps trough which corrosive agents can penetrate to the main reinforcement bars
SAVINGS IN STORAGE AND TRANSPORT
Keep in mind that's easier to store and transport (shipping companies charge for weight or volume, so that transporting a bag of plastic spacers will cost the same as a bag of mortar spacers) half the quantity of spacers needed for your build site.
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