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JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)
Civil Engineering, Transportation Engineering     
Flame retardant and pavement performance of composite hydroxide modified asphalt
HUANG Zhi yi1, WU Bin1, KANG Cheng1, ZHU Kai2, WU Ke1
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 2. College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, China
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Abstract  

Composite hydroxide flame retardant was formed by mixing aluminium hydroxide (ATH) and calcium hydroxide (HL) with a mass ratio of 1∶1. The influence of composite flame retardant on flame retarding performance and road performance of asphalt was analyzed by using thermogravimetry, cone calorimeter,freeze thaw splitting test and etc. Results indicate that the composite hydroxide flame retardant has a synergistic flame retardant effect. The composite hydroxide flame retardant can further prolong the ignition time of asphalt mixture and reduce the average heat release rate and the extent of CO production rate than the single hydroxide flame retardants (ATH or HL). Replacing some mineral powder with the same amount of composite hydroxide flame retardant can effectively improve the high/low temperature and water stability performances of asphalt mixture. Composite hydroxide plays a role of flame retardant in a wider temperature range and has better effects on the flame retardant, smoke suppression and road performances. The composite flame retardant is more cost effective.



Published: 31 March 2016
CLC:  U 416  
Cite this article:

HUANG Zhi yi, WU Bin, KANG Cheng, ZHU Kai, WU Ke. Flame retardant and pavement performance of composite hydroxide modified asphalt. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(1): 27-32.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2016.01.005     OR     http://www.zjujournals.com/eng/Y2016/V50/I1/27


复合氢氧化物改性沥青阻燃和路用性能

 将氢氧化铝(ATH)和氢氧化钙(HL)按质量比1∶1混合制得复合氢氧化物阻燃剂,采用热重、锥形量热仪和冻融劈裂等试验研究复合阻燃剂对沥青阻燃性能和路用性能的影响.结果表明,复合氢氧化物阻燃剂具有协同阻燃作用,较单一氢氧化物阻燃剂(ATH或HL)可以进一步延长沥青混合料的点燃时间,且降低平均热释放速率和CO产率的幅度更大;采用复合氢氧化物阻燃剂等量替代矿粉,可以有效地提升沥青混合料的高、低温性能和水稳定性.复合氢氧化物阻燃剂可以在更宽广的温度区间发挥阻燃作用,阻燃抑烟效果及路用性能俱佳,且性价比更高.

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