Concrete Sealing Systems: We recently had a paper published in Concrete Magazine on concrete sealing systems. Today sees the release of a series of mini blog posts that breaks down the article into some bite-sized advisory pieces.
Concrete Sealing Systems: Advances in the technology behind concrete mix design means that specifiers of concrete for basement construction have a broader choice to achieve the desired end product to satisfy Euro Code requirements. However, the weakness in any basement is the jointing as more joints are required in the construction to meet code requirements. This often conflicts with the contractor’s needs to pour more extensive areas to align with pressures on the program.
What choices are available for sealing systems for forming joints?
The choice of sealing systems for forming joints is varied, with many options available on the market, ranging from simple reactive systems like hydrophilic strips or active systems such as PVC tapes or coated steel strips. The choice of injection hose systems may be selected in specialised forms of construction, such as tunnels. They can be used in basement construction where joints need to be formed against existing structures, but this is a specialised area of work and requires the attendance of a specialist contractor to install and activate the system.
Each sealing system has its own merits in the development of a joint. However, as is often the case, the choice of a particular sealing system is down to preference of the specification by the designer or contractor due to personal preference or even down to the cost. Cost is another factor in the decision-making process, with the unit cost/m, being the driver but stealth expenses and post-working tasks? These are not seen in the cost and in some cases a contingency is factored in to deal with leaks. Again, these all have implications for program and project cost.
Please look out for the next blog post over the coming days.
To discuss your concrete sealing system requirements, please contact us.