BUILDING MATERIALS, OUTDOOR WATER PROOFING
- New concrete should be cured for at least 28 days and should have a pull off strength ≥1.5 N/mm².
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- New concrete should be cured for at least 28 days and should have a pull off strength 1.5 N/mm². Cement or mineral based substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and to achieve an open textured surface.
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