An experimental investigation of flame retardant mechanism of hydrated lime in asphalt mastics
作者： Ke Wu , Kai Zhu , Cheng Kang , Bin Wu , Zhiyi Huang
DOI: 10.1016/J.MATDES.2016.04.057
关键词:
摘要: Abstract In this study, the flame retardant mechanism of hydrated lime (HL) on asphalt mastics was investigated via a range analytical techniques, including cone calorimeter test, and thermogravimetry differential scanning calorimetry analysis. Experimental results indicated that HL is result comprehensive effects blocking, cooling dilution. As compared with magnesium hydroxide (MH), shows stronger condensed phase effect, which leads to better performance in reducing total heat release rate, CO yield smoke rate. Furthermore, it noted process combustion, parallel reactions dehydration carbonation will occur, wherein runs through first second stage combustion. The generated calcium carbonate promotes mastic surface form barrier layer, limits combustion postpones char an additional third stage. This typical characteristics char- or residue-forming materials.
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