concrete 'mold', rammed earth in Mexico
November 20, 2009 7:27 AM Subscribe
Why does so much of the concrete work here eventually mold? (I am in the Yucatan) If that is the right word for this action. The discoloring. Is there an admixture missing? Something that is used elsewhere? how much is to be blamed on the humidity? People elsewhere are experimenting w/ new mixtures (i. e. fly ash) to make less wasteful, lighter etc.; in this area, is anyone experimenting w/ new formulas? What is the difference between exposed formwork say, in the US, and here? Oh, and one more. Could 'rammed earth' construction be done here? What is the raw ingredient necessary? There is alot of limestone here.