Concrete Basics: A Guide to Concrete Practice

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  1. 3.5 Lime is a self healing natural product and is a softer concrete when mixed with sand.Old kilns and fireplaces in houses used a lime and sand mix that still exist.Lime is also waterproof and breaths unlike concrete.Perhaps you can learn more about how to make your own lime from limestone.Its easy to do with coal in a rocketstove made of cinderblocks stacked up(16 brick rocket stove style but much taller).Youtube has a video made in Sweden I think.Unlike concrete that gets hard and can’t be used again lime can be made into putty again and again if it gets hard.Lime mortar and putty needs cured 4-6 weeks but can be used immediately.God is amazing.

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