高温辐射下的沥青混合料阻燃耐火性能

发布时间：2018-08-01 12:52

【摘要】：采用锥形量热仪和马弗炉燃烧试验模拟隧道火灾的高温辐射条件,研究热辐射条件下复配阻燃剂对沥青混合料的阻燃耐火性能的影响。采用70#道路石油沥青,沥青混合料设计采用AC-13级配,油石比5.2%。制备阻燃沥青混合料时以阻燃剂替代部分矿粉,并按照规范制备复配阻燃沥青混合料马歇尔试件。试验结果表明:添加复配阻燃剂后,沥青混合料的点燃时间和烟气释放时间延迟,热量和烟气释放速率明显降低,稳定度和燃烧后残留稳定度均有所提高。复配阻燃剂有效提升了高温辐射条件下沥青混合料的阻燃抑烟和耐火性能。
[Abstract]:The high temperature radiation condition of tunnel fire was simulated by conical calorimeter and muffle furnace combustion test. The effect of composite flame retardant on the flame retardant and fire resistance of asphalt mixture was studied under the condition of heat radiation. Adopt 70# road petroleum asphalt, asphalt mixture design adopt AC-13 gradation, the ratio of stone to stone is 5.2. When the flame retardant asphalt mixture is prepared, some mineral powder is replaced by flame retardant agent, and the Marshall specimen of composite flame retardant asphalt mixture is prepared according to the specifications. The experimental results show that the ignition time and flue gas release time of asphalt mixture are delayed, the heat and flue gas release rate are obviously decreased, and the stability and residual stability are improved after the addition of compound flame retardant. The composite flame retardant can effectively improve the flame retardancy, smoke suppression and fire resistance of asphalt mixture under high temperature radiation.
【作者单位】：中国计量大学浙江省家具检测技术研究重点实验室;浙江大学建筑工程学院;浙江龙盛化工研究有限公司;
【基金】：浙江省自然科学基金项目“基于沥青组成特性的阻燃性能优化研究”(LQ17E080011);浙江省自然科学基金项目“贫氧高升温速率下沥青的热解燃烧特性及阻燃抑烟机理研究”(LY14E080014);浙江省自然科学基金项目“基于热成像的硫化矿石自燃灾源识别研究”(LY14E04001) 国家自然科学基金项目“火灾工况沥青热解燃烧特性及纳米粘土/金属氢氧化物复合阻燃体系研究”(51408542)
【分类号】：U414

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