Water resistant concrete structures continue to gain importance. However, construction joints have often proven to be the achilles heel in water tight structures. Through its water impermeability, the patented CEMflex Waterstop convinces contractors, engineers and the site personnel alike.
The patented CEMflex Waterstop provides full efficacy whilst also being very simple to fit. CEMflex ensures that your concrete structures, foundations and tunnels are completely waterproof. It functions as an active and passive barrier for the transmission of water at the construction joint.
Additionally, the design allows a simple and fast installation by hand. It is possible to install CEMflex either before the concrete is poured or in the fresh concrete. Furthermore, CEMflex enables the sealing of vertical and horizontal joints in concrete structures. Its unique functionality is proven and certified by a variety of independent test laboratories.
possible pre-applied, attached to the reinforcement, or post applied in the fresh concrete
verified and certified by independent test laboratories
as the active crystallization process ensures water-proof concrete structures, up to 8 bar water pressure
Experience and feedback from site show that the usage of CEMflex minimises your expenses significantly:
The simple design of CEMFlex ensures an easy to understand and fast installation process and minimises the need for expensive remedial work. You can install CEMflex flexibly either before or after the concrete pouring.
The installation process is self-explanatory: even inexperienced personnel can quickly learn how to handle the system. No special preparation and no special installation tools are required. Additionally, no cutting, welding or glueing of the waterstops is necessary. The system is fully weatherproof. It can be installed both in wet and dry weather conditions.
By using CEMflex, you can be sure that the concrete joints and structures of your buildings are waterproof and sealed. This strenghtens your legal protection against liability issues from customers.
CEMflex fulfills the internationally approved standards for waterstops. The effectiveness of CEMflex has been tested successfully under very severe conditions in accordance with many independent and international test laboratories:
This page gives you an overview about the most common and internationally valid certificates. Please feel free to contact us for more information about the test certificates and further information about local certificates that are valid in your country.
You can find additional information about the PERI Components portfolio as well as the right local contact person for your projects on the PERI homepage.
The functionality of CEMflex is unique and patented. Normally, water searches its way along physical structures and flows through gaps and cracks. By assembling CEMflex, both a physical and a chemical barrier are created. These barriers ensure that your concrete structure is waterproof for its whole lifetime.
To prevent the water flow around the physical barrier, an additional bonding to the concrete is necessary. Thanks to the patented crystallization process, CEMflex ensures this bonding. When the CEMflex plate comes into contact with water, the overlapping steel plates connect completely with each other and prevents lateral waterflow. The water can not longer run around the physical barrier. Even small gaps and cracks are closed by the crystals.
The surface as well as the edges of the CEMflex plate are overall coated. This makes the installation quite simple and minimises the likelihood of application errors by the jobsite personnel – there is no wrong or right side to install the plate.
Additionally, the crystallization process leads to a higher efficiency on your site and saves valuable time. There is no temperature and waiting time between different work processes.
The CEMflex plate is coated with a crystalline admixture. The particles of this special coating of CEMflex automatically start a chemical reaction when they come into contact with water or water-based liquids. By doing so, the sintering in the concret structures begins that in turn provokes a natural formation of limestone.
You can observe the active self-healing process of CEMflex under a microscope. When the chemical reaction of the coating takes place, calciumhydroxy-based crystalline fibres and needles are created.
CEMflex is delivered in a wooden box. This reduces the onsite wastage.
CEMflex is supplied in a length of 2 m x 150 mm. There are 50 blades and 50 clips per box. The accesories, for example extra Clips or Omega Holders, are sold separately.
Safe storage on site
CEMflex can be stored safely onsite in its original packaging.
Make sure to always store the plates in the boxes. For long-time storage, the plates should be stored off the ground, in dry conditions which are free from frost.
In addition, the unique functionality and the crystallization process of CEMflex allows you to store the boxes in all weather conditions for a short time. In the event of rain, the coating will not be activated and thereby secures a safe storage.
In comparison to traditional waterstop systems, CEMflex convinces not only through its effectiveness, but also through a variety of other advantages.
All project participants – contractors, engineers as well as the site personnel – benefit equally from the unique and sophisticated functionality.