| 摘要 |
The invention features an additive for a mastic coating comprising a cut-back asphaltic base material used in roof and construction applications. The additive comprising sodium bicarbonate in a range by weight of between 2 and 8 parts per 1 part of the cut-back, asphaltic-type base material, has the dual purpose of accelerating the curing time and improving flame retardancy of the mastic coating.
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