Make a Concrete & Plaster Mixture
Concrete plaster is most commonly used in the creation of outdoor concrete lawn ornaments and sculptures. This medium is a favorite for "free-form" sculptures that are made without molds. The concrete plaster is usually applied to a wire or wire mesh base structure known as an armature. When produced correctly, the resulting structure can endure many years even in harsh outdoor weather.
Instructions
1. Put on waterproof gloves and wear them throughout all Steps. Pour 6 cups Portland cement into one of the 5-gallon buckets. If you desire a stronger, more waterproof mixture, use up to 3 cups masonry sand in place of 3 of the cups of Portland cement. If you mix in sand, blend the two thoroughly with a long-handled spoon or mixing drill at a medium setting.
2. Add polypropylene fibers a pinch at a time to a measuring cup, separating them so they are loose rather than packed down. These fibers go a long way, so don't use more than the recommended 1/4 cup.
3. Add the polypropylene fibers to the dry mixture and blend well.
4. Mix 1 cup admixture, 1 cup paint and 1 cup water in the second 5-gallon bucket. Blend thoroughly.
5. Add the liquid mixture to the bucket containing the dry mix. Blend all ingredients until it resembles thickened peanut butter. If it is too runny, add up to 2 additional cups of Portland cement in small amounts at a time, but do not exceed the recommended 8 cups of total dry mixture. Blend often and well, testing the consistency with each addition of cement. When it's done, a large spoonful of the mixture should maintain its shape when dropped onto the rest of the batch.
6. Use the concrete plaster immediately. You'll only have about 30 minutes before the mixture begins to set and becomes too rigid to work with easily.
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