开发与应用

苯乙烯-丁二烯嵌段共聚物与废橡胶粉复合改性高黏沥青及混合料性能研究

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  • 1.长安大学公路学院,西安710064;
    2.长安大学材料学院,西安710064
马峰(1978-),男,博士,教授,硕士研究生导师,主要研究方向为道路结构与材料,E-mail:mafeng@chd.edu.cn。

收稿日期: 2020-09-01

  修回日期: 2020-11-23

  网络出版日期: 2021-03-03

基金资助

国家自然科学基金青年基金(51408051)

Study on property of SBS and waste rubber powder modified high-viscosity asphalt and its mixture

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  • 1. School of Highway,Chang'an University,Xi'an 710064;
    2. School of Materials Science and Engineering,Chang'an University,Xi'an 710064

Received date: 2020-09-01

  Revised date: 2020-11-23

  Online published: 2021-03-03

摘要

为了评价高黏改性剂对沥青性能的影响,采用高速剪切法制备了苯乙烯-丁二烯嵌段共聚物(SBS)改性沥青、废橡胶粉改性沥青和两种SBS/橡胶粉复合改性高黏沥青。通过三大指标试验、黏度试验、高温车辙试验和低温小梁弯曲试验,研究了高黏沥青的高低温性能、感温性能及沥青混合料路用性能。结果表明:4种改性沥青的高低温性能随各自改性剂掺量的增加逐渐提高,掺加10%北美岩沥青或2.5%多聚磷酸(PPA)的高黏沥青感温性能更稳定,较大幅度提升了黏度值,高温性能改善明显;掺加2.5% PPA的高黏沥青及其混合料能够更好地抵抗高温条件下的性能衰减,保证了使用效果,更适用于温度较高地区;掺加10%北美岩沥青的高黏沥青及其混合料在低温条件下性能良好,推荐在低温地区使用。

本文引用格式

马峰, 李思琪, 傅珍, 张耀, 王钰洁 . 苯乙烯-丁二烯嵌段共聚物与废橡胶粉复合改性高黏沥青及混合料性能研究[J]. 化工新型材料, 2021 , 49(2) : 254 -258 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.058

Abstract

In order to evaluate the effect of high-viscosity modifiers on asphalt properties,high speed shear method was used to prepare SBS modified asphalt,waste rubber powder modified asphalt and two SBS/rubber powder composite modified high-viscosity asphalt.The high-temperature performance,low-temperature performance and temperature-sensing performance of the high-viscosity asphalt and the road performance of the asphalt mixture were studied through three major index tests,viscosity test,high-temperature rutting test and low-temperature beam bending test.The results shown that the high-temperature performance and low-temperature performance of the four modified asphalts gradually increased with the increase of the respective modifier content.The high-viscosity asphalt mixed with 10% North American rock asphalt or 2.5% polyphosphate PPA was more stable in temperature sensitivity.The viscosity value was greatly improved,and the high-temperature performance was significantly improved.The high-viscosity asphalt and its mixture with 2.5% PPA can better resist the performance degradation under high temperature conditions,ensured the use effect and was more suitable for areas with higher temperature.High-viscosity asphalt and its mixture mixed with 10% North American rock asphalt had good performance under low temperature conditions,and recommended to be used in low temperature areas.

参考文献

[1] 熊子佳,程金梁,邓成,等.高粘改性剂对沥青及OGFC混合料性能的影响[J].大连交通大学学报,2017,38(5):94-97.
[2] 袁东东,蒋玮,肖晶晶,等.SBS、橡胶和高黏改性沥青流变性能对比[J].长安大学学报(自然科学版),2020,40(1):135-142.
[3] 冯新军,解明卫,陈安迪.TS高黏度改性沥青的制备和OGFC混合料的路用性能[J].公路交通科技,2019,36(1):8-15.
[4] 钱振东,王睿,陈团结.橡胶粉掺量对环氧沥青及其混合料性能的影响[J].建筑材料学报,2014,17(2):331-335.
[5] 马峰,郝景贤,傅珍,等.天然沥青改性沥青的表面自由能分析[J].交通运输工程学报,2015,15(1):18-24.
[6] 刘勇,顾兴宇,李志刚,等.胶粉/SBS复合改性沥青性能评价及改性机理[J].江苏大学学报(自然科学版),2019,40(1):108-113.
[7] Masson J F.Brief Review of the chemistry of polyphosphoric acid (PPA) and bitumen[J].Energy & Fuels,2008,22(4):2637-2640.
[8] 张增平,贾猛,魏龙,等.多聚磷酸改性沥青的研究进展[J].中外公路,2016,36(2):230-233.
[9] 于水泳.TLA沥青和北美岩沥青改性沥青性能研究[D].长沙:长沙理工大学,2017.
[10] 黄文通,徐国元,刘宇,等.基于微观结构的北美岩沥青改性机理研究[J].功能材料,2015,46(12):12082-12086.
[11] 陈瑶,谭忆秋,陈克群.TPS改性剂对高粘沥青性能的影响[J].哈尔滨工业大学学报,2012,44(6):82-85.
[12] 李立寒,耿韩,孙艳娜,等.高粘度沥青性能评价指标与标准的试验[J].同济大学学报(自然科学版),2010,38(8):1155-1160.
[13] Rasool R T,Wang S F,Zhang Y,et al.Improving the aging resistance of SBS modified asphalt with the addition of highly reclaimed rubber[J].Construction and Building Materials,2017,145:126-134.
[14] 黄振.新型橡胶粉沥青结合料及沥青路面级配的研究[D].西安:长安大学,2016.
[15] 交通运输部公路科学研究院,交通运输部.公路工程沥青及沥青混合料试验规程[M].北京:人民交通出版社,2011.
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