Even though I've shown in other videos how to make this mix, I have had inquiries as to how to make a concrete mix that is like clay that can be shaped, molded, carved or stamped. This is one of my mixes. Please be aware that, when I refer to percentages of additives, the percentage of additive is based on the amount of CEMENT and NOT on the whole mix. So, when I say, for example, to add 20% metakaolin, that is 20% of the amount of portland cement. So, if I use 10 cups of portland cement, the amount of metakaolin would be 2 cups, which is 20% of 10 cups. This mix uses portland cement, fine sand, fiber, acrylic admix and metakaolin, which I buy from Fishstone in Crystal Lake, Illinois. A 40 pound bag makes one heck of a lot of this type of concrete. In this video, I use the mix to create a sculpted and carved faux bois concrete bridge.
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