Within 48 h before construction of poured concrete piles, mix Xypex Concentrate with clean water (mixing ratio powder: 1 2 water by volume of instrument making), carefully stir the mixture by hand mixer within 2 ~ 3 minutes until the mixture is crumbly and not clumping, watered from above onto the surface of the top of the pile (up both sides on top of the pile rebar) with levels ~ 1.5 kg/m2.
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