What are Cintec Structural Reinforcement Anchors?
Cintec anchors are lengths of stainless steel, usually round or square section, hollow or solid, which are inserted into masonry to reinforce structures. The anchors are placed into drilled holes in the masonry and permanently fixed by surrounding the steel with a cementitious grout (the drilled holes are of larger diameter than the anchor). The grout is pumped into the void around the anchor and when this sets the anchor is ‘locked’ into the surrounding masonry.
The design of the anchors includes a woven fabric sock which is fitted over the steel bar. The grout is pumped inside the sock which expands like a balloon. The sock controls and contains the spread of the grout and also prevents it from being lost in any voids. The sock does however stretch to allow the grout to spread some distance into voids.
The anchor is permanently fixed to the masonry in two ways:
by mechanical bond due to the grout being forced tight against the inside of the hole (the grout does not shrink when it dries).
by chemical adhesion – as the grout is injected under pressure ‘milk’ from the grout is forced through the woven sock which bonds with the parent material.
Design and manufacture of the Anchors
There are a variety of anchor types which can be manufactured to almost any length. Anchors are not generally supplied ‘off the shelf’ but are almost always individually designed and manufactured for each job.
Anchors installed by Peter Cox to date have typically been from 8 – 30mm diameter steel and up to about 8 metres long. Much larger anchors are however possible. Various diameters of sock are used dependant on the anchor diameter and application.
Contact Peter Cox Ltd for a professional consultation and survey.