The formula grant distribution based on the basic levels of the raw brick AAC at the factory. The ratio of PDMS waterproofing additives added in levels based on experiments several times until the brick AAC achieve water absorption according to require 8-10%. The formula for the distribution level brick AAC use waterproofing additives PDMS with steel roll file size 4.2 x 1.2 x 0.7 m are as follows:
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