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Claygrain Claygrain is a dissolved, anhydrous sodium bentonite powder, characterised by a montmorillonite content in excess of 95%, with low yield-point (proof). The product should be used as it is, to increase the amount of bentonite in punctual areas, or mixed with cement and water or just water to obtain a slightly expansive waterproofing mortar, suitable for smoothing any crawl spaces in the concrete prior to laying and refilling the Claytex bentonite sheet. Reinforcing and/or filling injections. Plastic diaphragms. Punctual protective sealing of critical areas in waterproofing underground areas with bentonite systems. The standard dosage is 60 l/m³ of water (standard minimum quantity). The indicated concentration can be adjusted, depending on the characteristics of the soil and the required viscosity. It is necessary to mix the product adequately during the preparation of the slurry to allow sufficient hydration. Product to buy as needed. Packaging: 25 kg bag UM: €/kg