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When it comes to installing Hydrotite, there are a lot of things that need to be remembered. The following will take a look at the important tips for installing hydrotite.
What is Hydrotite?
Basically, Hydrotite is a water stop that is hydrophilic and gives great durability and has an excellent capacity for stopping the flow of water. It works by expanding as it absorbs water and works to fill gaps in the concrete surface that will conform to the variation in said gaps. All of this works to ensure excellent water sealing, and the technology is based on material that expands exponentially in response to moisture to create high pressure sealing within a joint.
When it is installed properly, Hydrotite is very effective when it comes to sealing up heads of water that range up to 50m. It is a widely used product in throughout construction sites as a means of ensuring a seal on vertical and horizontal construction joints.
The product has many different profiles that make it great for poured concrete construction and is made from a special combination of materials that expand and material that don’t expand. The sections that do not expand is black, while the section that does expand is blue.
First of all, a surface that is clean, smooth, dry and free from things like dust, grease, oils, debris is needed. This is similar in nature to off-form finish or wood float. Ideally, there should be air holes between 4-5mm in total diameter, and the depth should be grouted, making use of a non-shrink grouting solution.
Hydrotite is a material that needs, at minimum, 50mm cover of the concrete surface. The 50mm is for reinforced concrete, and 100mm is for concrete that is not reinforced. This is to accommodate the swelling that occurs upon expansion of the waterstop product.
The joining method needs to be done via a neat and firm butt conjoining that firmly pushes up to the following section, that is to be joined. All of this is done by making sure that ends are cut with scissors or a sharp knife.
At this point, a Leakmaster bead should be established across the surface of the joints and leaks can and will occur if the butt joins are not done properly. Making use of Leakmaster at this stage will make sure to increase the watertight integrity of the structure that is being worked on.
It is not a good idea to try nailing Hydrotite unless an adhesive is being used. Nailing without an adhesive and form a curtaining effect that may cause concrete to find its way behind the water stop material that you are using.
The product needs to be used in the context of preventing water from passing through joints of love movement in existing and new concrete structures. It is also useful around pipe entrances that are penetrating and should be placed before the concrete is installed. It has a higher volume ranging to 800% and has hydraulic head resistance up to 50m.
When used as a waterstop Hydrotite needs to be positioned in such a way to ensure 100 mm coverage when it comes to concrete that is present to make sure pressure is accommodated. It is generally not suited for use in expansion joints.
As you can see, there’s a lot of information to be absorbed when it comes to Hydrotite and how it is best used when dealing with water sealing. Hopefully, the information above is something that you can use to make sure that you are using this product correctly in order to get the best benefit from it.
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