Steel fibre concrete floor laid using laser screed in Grimsby, North Lincolnshire
An overlay to an existing concrete floor slab presented a problem in terms of sub strata levels for the design and construction of the new concrete floor slab. The levels meant that a lot of the existing concrete had to be removed in order to give the new concrete floor slab a consistent depth of 150mm. The building was approximately 20 years old and so had columns at close centres causing concerns for the laying procedure and the inducing of cracks from shrinkage restraint. A floor loading of 30KN/M2 was required by the client, a speculative industrial developer.
Nationwide Concrete Flooring Ltd chose a steel fibre floor slab design with saw cut induced contraction joints to cope with both shrinkage restraint from columns and to eliminate the cutting of mesh fabric sheets with numerous laps etc.
Steel fibres supplied by Bekaert one of the most well known and reputable suppliers in the world were integrated into the ready mix concrete on site to avoid any mixing and dosage problems.
Steel fibre concrete floor laid using laser screed in Grimsby, North Lincolnshire
A highly polished power floated finish was required by the client as the end users were not known due to the warehouse units been speculative. Steel fibres in concrete can often become a problem at the surface of the concrete floor slab during the finishing and power floating process. Experienced staff and modern equipment are essential to maintaining a quality finish to the concrete floor slab – See photo.
The saw cut induced contraction joins were installed the following day and immediately sealed with instant seal 101 – See photo.
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