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it has more cement than the normal mix

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13y ago

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Will using concrete sealer affect using tile adhesive?

It's important to apply a concrete sealer before adding the tiles. If you don't, the alkali's in the concrete will eventually break down the adhesive resulting in the tiles peeling off. Absolutely Correct!! To elaborate on the "alkali's in the concrete" understand the following: Portland Cement is a very alkali rich material. Not all the chemicals in concrete completely hydrate as it cures and this high alkaline condition exist and continues for years. You've heard about "Alkali Burn" causing paints to peel or blister?? This is why! The chemicals in a concrete interior are allowed to migrate out to a surface and contaminates can enter an interior through the Gel-Pore / Capillary system found in all concretes. A sealer is applied to prevent this!! Choose a sealer that comes with a warranty for waterproofing [15 years] and one that is compatible with you tile manufacturers list of approved adhesives. Otherwise you may void any warranty on the tiles and or adhesive. Do not use a sealer that allows for a subsequent [Second] application!! Ask yourself what happened to the first coat?? Avoid a sealer that cautions " Do Not allow sealer to come in contact with metals or glass" !! They don't work!!


What is Sulphate Resistant Portland Cement?

Sulphate Resistant Portland Cement (SRPC) is a type of cement specifically designed to withstand high sulphate concentrations in soil and water, which can cause deterioration in standard cement. It is produced by modifying the chemical composition of ordinary Portland cement to reduce the amount of tricalcium aluminate (C3A), which is susceptible to sulphate attack. SRPC is commonly used in structures exposed to aggressive environments, such as sewage treatment plants, foundations in coastal areas, and concrete exposed to sulphate-rich soils. Its durability enhances the longevity and performance of concrete in challenging conditions.


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