Inappropriate concrete quality and architectural features will result in increased potential for long-term contact with water. This means that concrete structures often require waterproofing systems to prevent water leakage and penetration. In addition to this, concerns about strength, damage to finishes and furnishings and other environmental conditions have made the waterproofing a desirable feature to any concrete construction.
The most common phenomena affecting the durability of concrete foundations arise from the contact between concrete and surface water, sulphate salts or chloride ions. This may change the microstructure and chemical composition of concrete and/or promote the corrosion of reinforcement steel.
Successful waterproofing solutions of concrete foundations prevent the degradation of environmental and health conditions of building materials used in below ground storeys and extends the service life of concrete constructions.
WATERPROOFING PRODUCTS IN DUBAI FOR CONCRETE FOUNDATIONS
A wide range of materials can be used in waterproofing systems for concrete foundations.
Liquid-applied systems require a particularly thorough surface preparation and skilled workmanship to ensure a consistent minimum cover thickness. This is why they are not often used to waterproof buried concrete elements, where accessibility of back-filling is limited and extended service lives are required.
Most concrete construction waterproofing works require either bituminous or synthetic prefabricated membranes. High flexibility is required for detail work on complex concrete shapes such as footings, which require a lower bending radius. It also enables the factory welding of different panels, which decreases the risk of joint failure since the resulting large sheets can be folded for transport to the construction site. The sheets would otherwise be supplied in rolls.
Furthermore, punching resistance and stress cracking resistance are desirable because they prevent potential damage from mechanical action during installation on concrete casting.
Stress cracking is often the failure of a membrane at applied constant stress lower than its tensile strength and it can be caused by several factors. These factors include cyclic temperature variations, the presence of chemical agents, UV oxidation and, fatigue. Also, membranes should support high elongation at break, so that they can resist any potential cracking of concrete.
Moreover, sodium bentonite has also been used in a variety of formats as a waterproofing solution. Water ingestion causes sodium bentonite to swell to several times from its original volume which results in filling any crack in concrete elements.
As there are several kinds of waterproofing products in Dubai, each with its unique strengths and weaknesses, it is then highly important to know which of these products is most suitable for your type of application.
Corrotech Construction Chemicals manufactures the finest quality waterproofing and concrete repair products. They have proven solutions for all type of concrete repairs, including wall and floor crack repair kits, roadway repair / large area concrete repair products, parking lot repair etc. To view their range of waterproofing and repair products for concrete surfaces, visit their website at www.mctuae.com
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