The filler joist method of floor slab construction, prevalent in many buildings constructed during the 1920’sand 1930’s, entailed encasing steel ‘I‘ section beams within (generally poor quality) concrete containing clinker and brick aggregate. Corrosion of the steel beams, due mainly to the porosity of the concrete, causes cracking.
Controlled injection of highly alkaline, high strength micro grouts, can successfully be used to encapsulate the steel beams, thus minimising the risk of future corrosion. The ultra high flow grout will also fill any interconnected voids present within the clinker concrete to consolodate the matrix, enhancing the load bearing capacity of the floor slabs.
New micro grouts with corrosion inhibitors and gelling agents are now available, enabling complete encapsulation of beams within porous clinker concrete. Resitech continue to research and source the best products available for use in our injection systems.
Click here to see a short video of this in action.
Coupled to the above Resitech are now able to offer a bespoke Hybrid Cathodic Protection option for increased durability. We would be pleased to arrange a site visit to discuss your specific requirements in detail.
