ULTRA-LIGHT MINERAL FOAM AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Jun 4, 2015
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Jun 6, 2014
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A method for producing a mineral foam includes: (i) independently preparing a cement slurry and an aqueous foam, the cement slurry being prepared by mixing water E and cement C, the cement C including a soluble equivalent quantity x of Na2O, x being expressed by weight for 100 parts cement, the slurry having a ratio x/(E/C) less than or equal to 1.75, E/C being expressed by weight, and the particles of cement C having a size distribution such that the particle size distribution ratio dmax(h/2)/dmin(h/2) is between 5 and 25; (ii) bringing the cement slurry into contact with the aqueous foam in order to obtain a foamed cement slurry; and (iii) shaping the foamed cement slurry obtained in step (ii) and allowing setting to take place.
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