To start with, let us discuss what concrete is and why it needs waterproofing. Concrete is porous. It will absorb the water from a pond along with waterborne contaminants and chemicals, causing deterioration. To prevent this, concrete fish pond waterproofing is done. Waterproofing is essential to protect the concrete and make sure it has a serviceable, long life.
How To Make Concrete Waterproof?
Waterproofing the concrete will include both preventions of water passage as well as resisting hydrostatic pressure. Waterproofing can be done from the positive or exterior side, negative or the interior side or it may be done from within the concrete. Positive-side technology is most popularly adopted by service providers.
There have been several construction projects making use of integral crystalline admixtures. The integral systems happen to block the passage of water from all directions and make the concrete itself a water barrier. Here are some points to help decide better as to how one can carry out concrete waterproofing.
Sheet membrane systems
Sheet membrane systems have been leading the industry for a long time. They still hold the major part of the market share and this is because of impact resistance, overall durability as well as toughness. Such waterproofing membranes are self-adhering. They effectively eliminate harmful toxins associated with asphalt adhesion.
However, with such membrane systems, it is important to apply the membranes to a smooth finish, that is free of voids, protrusions or honeycombs. It is also essential to install protection boards so the membrane can face a puncture and tear off during backfilling.
Liquid-applied membranes
They can be applied with the help of a brush, roller, spray, trowel as well as a squeegee. Generally applied on the positive side of the cured concrete, they come with high elastomeric properties. Success in waterproofing with such membranes will depend upon factors such as uniform application and proper thickness.
It is better to get the work done by skilled and experienced labour. Such waterproofing membranes work best with intricate geometric shapes and protrusions and with multiple plane transitions. However, they have been significantly used in the cases when prefabricated sheets didn’t work well.
Admixtures
This is a new type of waterproofing used around the globe. It involves the use of integral admixture systems that are added at what is called the batching plant or on-site. They react chemically with the concrete. They work by transforming concrete itself into water barriers and do not include any type of barrier formation on positive or negative sides of concrete. Integral concrete waterproofing systems such as these can be densifiers, crystalline admixtures or water repellents.
Crystalline admixtures
These are crystalline-based systems that come in some dry, powdered form. They are hydrophilic in nature and make use of available water in the growth of crystals inside the concrete. They close off the pathways for moisture effectively that could have damaged the concrete.
This type of waterproofing also involves blocking water from all directions so as to make concrete the required water barrier.
It is important to select the right type of waterproofing. And the key to success is efficiency in the construction industry, apart from selecting the right concrete waterproofing product for the particular job.
