消石灰对沥青阻燃性能的影响

doi:10.3785/j.issn.1008-973X.2015.05.022

浙江大学学报(工学版)

水利工程、土木工程

消石灰对沥青阻燃性能的影响

朱凯1,2,黄志义1,吴珂1,武斌1,张欣1,张驰1

1. 浙江大学建筑工程学院, 浙江杭州 310058; 2. 中国计量学院质量与安全学院, 浙江杭州 310018

Hydrated lime modification of asphalt mixtures with improved fire performance

ZHU Kai1,2,HUANG Zhi-yi1,WU Ke1,WU Bing1,ZHANG Xin1,ZHANG Chi1

1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, China; 2. College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, China

全文: PDF(1167 KB) HTML

摘要：

为了研究消石灰对沥青阻燃性能的影响,采用极限氧指数、锥形量热仪、热重-差热试验对消石灰改性沥青的燃烧特性进行表征,并与石灰石和氢氧化镁进行对比.试验结果表明,与添加等量石灰石相比,添加消石灰沥青的极限氧指数明显提高,与添加氢氧化镁接近；同时锥形量热仪实验表明消石灰可延长沥青点燃时间,有效降低沥青的燃尽率、燃烧反应速率、烟释放率和释热量,减少燃烧过程中CO的释放.与氢氧化镁不同,在反应初期消石灰并非利用吸热的分解反应起到阻燃作用,而是通过抑制可燃挥发分的析出,以延缓沥青的着火；同时,在沥青燃烧过程中消石灰会进一步发生碳酸化反应,形成致密的碳酸盐阻隔层,起到阻隔热质交换和抑制沥青质燃烧的作用.

Abstract:

The effects of hydrated lime addition on flame retardancy of asphalt were investigated by means of limiting oxygen index (LOI), cone calorimeter and thermal gravimetric-differential scanning calorimetric (TG-DSC) tests, the results of which were directly compared with limestone and magnesium hydroxide additions. Experimental results revealed that the addition of hydrated lime has significantly increased the LOI of asphalt, where this improvement is much higher than that of limestone addition but similar to that of Mg(OH)2 addition. Cone calorimeter tests further show that the hydrated lime addition could result in the reductions in burn-out rate, burning rate, heat release rate and smoke release rate of asphalt, whereas the release of CO is also inhibited. Unlike Mg(OH)2 addition, the hydrated lime does not proceed a decomposition process at the initial reaction stage to achieve flame retardancy but via suppressing the release of flammable volatile to prevent the asphalt from igniting. Moreover, during asphalt combustion, the hydrated lime has further induced a carbonation reaction, generating a dense residue layer that suppresses the heat and mass transfer and hence inhibiting the combustion of asphaltenes.

出版日期: 2015-12-26

U 416.217

基金资助:

国家自然科学基金资助项目(51408542); 浙江省自然科学基金资助项目(LY14E080014)

通讯作者: 吴珂, 男,助理研究员 E-mail: wuke@zju.edu.cn

作者简介: 朱凯(1988-), 男, 博士生, 主要从事交通隧道安全及沥青阻燃方面的研究. E-mail: 11212056@zju.edu.cn

	服务
	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

引用本文:

朱凯,黄志义,吴珂,武斌,张欣,张驰. 消石灰对沥青阻燃性能的影响[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.05.022.

ZHU Kai,HUANG Zhi-yi,WU Ke,WU Bing,ZHANG Xin,ZHANG Chi. Hydrated lime modification of asphalt mixtures with improved fire performance. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.05.022.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2015.05.022 或 http://www.zjujournals.com/eng/CN/Y2015/V49/I5/963

［1］吴珂,黄志义. 特长隧道火灾中沥青路面温度场的数值模拟［J］. 浙江大学学报：工学版, 2008, 42(1): 134-138．
WU Ke, HUANG Zhi-yi. Numerical simulation of asphalt pavement temperature distribution in long tunnel fires ［J］. Journal of Zhejiang University: Engineering Science, 2008, 42(1): 134-138．
［2］ BONATI A, MERUSI F, BOCHICCHIO G, et al. Effect of nanoclay and conventional flame retardants on asphalt mixtures fire reaction ［J］. Construction and Building Materials, 2013, 47: 990-1000．
［3］吴珂,黄志义,徐兴. 长隧道火灾中沥青路面燃烧的热效应研究［J］. 中国公路学报, 2009, 22(2): 77-81．
WU Ke, HUANG Zhi-yi, XU Xing. Research on thermal effect of asphalt pavement combustion in long tunnel fires ［J］. China Journal of Highway and Transport, 2009, 22(2): 77-81．
［4］吴珂,朱凯,黄志义,等. 基于红外光谱研究沥青燃烧机理和有害气体成分分析［J］. 光谱学与光谱分析, 2012, 32(8): 2089-2094．
WU Ke, ZHU Kai, HUANG Zhi-yi, et al. Research on the combustion mechanism of asphalt and the composition of harmful gas based on infrared spectral analysis ［J］. Spectroscopy and Spectral Analysis, 2012, 32(8): 2089-2094．
［5］ MASHIMO H. State of the road tunnel safety technology in Japan ［J］. Tunnelling and Underground Space Technology, 2002, 17(2): 145-152．
［6］ WU S, MO L, CONG P, et al. Flammability and rheological behavior of mixed flame retardant modified asphalt binders ［J］. Fuel, 2008, 87(1): 120-124．
［7］ XU T, HUANG X, ZHA Y. Investigation into the properties of asphalt mixtures containing magnesium hydroxide flameretardant ［J］. Fire Safety Journal, 2011, 46: 330-334．
［8］ BONATI A, MERUSI F, POLACCO G, et al. Ignitability and thermal stability of asphalt binders and mastics for flexible pavements in highway tunnels ［J］. Construction and Building Materials, 2012, 37: 660-668．
［9］ WU S, CONG P, YU J, et al. Experimental investigation of related properties of asphalt binders containing various flame retardants ［J］. Fuel, 2006, 85(9): 1298-1304．
［10］ QIN X, ZHU S, CHEN S, et al. The mechanism of flame and smoke retardancy of asphalt mortar containing composite flame retardant material ［J］. Construction and Building Materials, 2013, 41: 852-856．
［11］袁小亚,范芳芳. 阻燃沥青的研究进展［J］. 中外公路, 2012, 32(01): 240-243．
YUAN Xiao-ya, FAN Fang-fang. progress in flame retardant asphalt ［J］. Journal of China and Foreign Highway, 2012, 32(01):240-243．
［12］魏建国,谢成,付其林. 阻燃剂对沥青与沥青混合料性能的影响［J］. 中国公路学报, 2013, 26(06): 30-37．
WEI Jian-guo, XIE Cheng, FU Qi-lin. Influence of flame retardant on technical performance of performance of asphalt and asphalt mixture ［J］. China Journal of Highway and Transport, 2013, 26(06): 30-37．
［13］ LITTLE D N, PETERSEN J C. Unique effects of hydrated lime filler on the performance-related properties of asphalt cements: physical and chemical interactions revisited ［J］. Journal of Materials in Civil Engineering, 2005, 17(2): 207-218．
［14］ LESUEUR D, PEYIT J, RITTER H. The mechanisms of hydrated lime modification of asphalt mixtures: a state-of-the-art review ［J］. Road Materials and Pavement Design, 2013, 14(1): 116．
［15］ LAOYTID F, LORGOUILLOUX M, LESUEUR D, et al. Calcium-based hydrated minerals: promising halogen-free flame retardant and fire resistant additives for polyethylene and ethylene vinyl acetate copolymers［J］. Polymer Degradation and Stability, 2013, 98(9): 1617-1625．
［16］杨群,李望瑞. 沥青阻燃性能的评价方法与性能研究［J］. 建筑材料学报, 2008, 11(4): 431-434．
YANG Qun, LI Wang-rui. Limit oxygen index evaluation method and performance of fire-retardant asphalt ［J］. Journal of Building Materials, 2008, 11(4): 431-434．
［17］欧育湘,李建军,叶南飚. 阻燃聚合物纳米复合材料［M］. 北京: 国防工业出版社, 2010．
［18］安永林,杨高尚,彭立敏. 隧道火灾中 CO 对人员危害机理的调研［J］. 采矿技术, 2006, 6(3): 412-414．
AN Yong-lin, YANG Gao-shang, PENG Li-min. Research on hazard mechanism of CO on personnel in tunnel fire ［J］. Mining Technology, 2006, 6(3): 412-414．
［19］ XU T, HUANG X. Study on combustion mechanism of asphalt binder by using TG-FTIR technique ［J］. Fuel, 2010, 89(9): 2185-2190．
［20］ WU K, ZHU K, HAN J, et al. Non-isothermal kinetics of styrene butadiene styrene asphalt combustion ［J］. Chinese Physics B, 2013, 22(6): 66-101．
［21］ XU T, HUANG X. Combustion properties and multistage kinetics models of asphalt binder filled with flame retardant ［J］. Combustion Science and Technology, 2011, 183(10): 1027-1038．

[1]	黄志义, 胡晓宇, 王金昌, 章俊屾. 高黏沥青中高温感温性评价方法的适用性[J]. 浙江大学学报(工学版), 2015, 49(8): 1448-1454.

Viewed

Full text

Abstract

Cited

Shared

Discussed