隧道路面钢渣沥青混合料抗滑性能衰减试验研究
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摘要
利用室内加速磨耗仪模拟了隧道钢渣沥青路面的抗滑性能衰减过程,研究了钢渣沥青混合料(SSAM)在不同钢渣掺量、不同荷载和不同温度条件下的抗滑性能衰减规律,并且结合扫描电镜(SEM)及压汞(MIP)试验,分析了SSAM抗滑性能衰减过程及机理.结果表明:钢渣的掺入从衰减终值、损失率和衰减速率3个方面提高了沥青混合料的抗滑性能;SSAM抗滑性能随钢渣掺量的增加呈现先升后降趋势,在50%钢渣掺量处出现拐点;荷载对SSAM抗滑性能的影响主要表现在衰减过程的第2阶段至第5阶段,温度对SSAM抗滑性能的影响主要表现在第1阶段;钢渣集料表面纹理丰富,孔结构和孔级配更合理,从而改善了SSAM沥青膜的黏结性,提高了SSAM抗滑性能的稳定性.
The attenuation process of skid resistance of tunnel steel slag asphalt pavements was simulated by the indoor accelerating wear instrument. The skid resistance attenuation rule of steel slag asphalt mixtures(SSAM) with different contents of steel slag, different loads, and different temperatures was studied. The skid resistance attenuation progress and mechanism of SSAM was analyzed by scanning electron microscopy(SEM) and mercury intrusion porosimetry(MIP). The results show that the addition of steel slag improves the skid resistance of the asphalt mixture from final attenuation value, loss rate and decay rate. The skid resistance of SSAM shows a trend of first increasing and then decreasing with the addition of steel slag, and there is an inflection point at the 50% steel slag content. The effect of load against skid resistance is mainly reflected in the second to fifth stages of the attenuation process. The effect of temperature against skid resistance is mainly reflected in the first stage. The surface texture of steel slag aggregate is complex, and its hole structure and grading are more reasonable, which improve the adhesive property of the SSAM asphalt film and the stability of the SSAM skid resistance.
The attenuation process of skid resistance of tunnel steel slag asphalt pavements was simulated by the indoor accelerating wear instrument. The skid resistance attenuation rule of steel slag asphalt mixtures(SSAM) with different contents of steel slag, different loads, and different temperatures was studied. The skid resistance attenuation progress and mechanism of SSAM was analyzed by scanning electron microscopy(SEM) and mercury intrusion porosimetry(MIP). The results show that the addition of steel slag improves the skid resistance of the asphalt mixture from final attenuation value, loss rate and decay rate. The skid resistance of SSAM shows a trend of first increasing and then decreasing with the addition of steel slag, and there is an inflection point at the 50% steel slag content. The effect of load against skid resistance is mainly reflected in the second to fifth stages of the attenuation process. The effect of temperature against skid resistance is mainly reflected in the first stage. The surface texture of steel slag aggregate is complex, and its hole structure and grading are more reasonable, which improve the adhesive property of the SSAM asphalt film and the stability of the SSAM skid resistance.
引文
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[2] 葛敏莉,孙璐.山区高速公路隧道交通安全研究[J].交通运输工程与信息学报,2013,11(1):59-67.GE Minli,SUN Lu.Study on mountain highway tunnel traffic safety[J].Journal of Transportation Engineering and Information,2013,11(1):59-67.(in Chinese)
[3] 李灿华,陈琳,刘思.钢渣沥青混凝土路面及其服役性能研究[J].安徽工业大学学报(自然科学版),2011,28(2):136-140.LI Canhua,CHEN Lin,LIU Si.Study on the steel slag asphalt concrete pavement and its service performances[J].Anhui University of Technology(Natural Science),2011,28(2):136-140.(in Chinese)
[4] ASI I M,QASRAWI H Y,SHALABI F I.Use of steel slag aggregate in asphalt concrete mixes[J].Canadian Journal of Civil Engineering,2007,34(8):902-911.
[5] WU S,XUE Y,YE Q,et al.Utilization of steel slag as aggregates for stone mastic asphalt (SMA) mixtures[J].Building & Environment,2007,42(7):2580-2585.
[6] HAININ M R,YUSOFF N I M,SABRI M F M,et al.Steel slag as an aggregate replacement in malaysian hot mix asphalt[J].ISRN Civil Engineering,2012,Article ID 459016,5 pages.
[7] 王雅婷.钢渣集料在沥青路面超薄抗滑磨耗层中的应用研究[D].重庆:重庆交通大学,2013.WANG Yating.Study on application of steel slag aggregate in ultra-thin against sliding wear layer[D].Chongqing:Chongqing Jiaotong University,2013.(in Chinese)
[8] 谢君.钢渣沥青混凝土的制备、性能与应用研究[D].武汉:武汉理工大学,2013.XIE Jun.Research on the preparation performance and application of basic oxygen slag based asphalt concrete[D].Wuhan:Wuhan University of Technology,2013.(in Chinese)
[9] 董昭.加速磨耗试验与沥青路面材料抗滑性能衰变规律研究[D].西安:长安大学,2011.DONG Zhao.Study on accelerated polishing test and the regularity of skid resistance degradation of asphalt pavement[D].Xi'an:Chang'an University,2011.(in Chinese)
[10] 李甜甜.基于三维线激光技术的路面车辙检测技术研究[D].西安:长安大学,2016.LI Tiantian.Research on pavement rutting detection technique based on 3D line laser technology[D].Xi'an:Chang'an University,2016.(in Chinese)
[11] LI L,WANG K C P,LI Q.Geometric texture indicators for safety on AC pavements with 1mm 3D laser texture data[J].International Journal of Pavement Research & Technology,2016,9(1):49-62.
[12] 杨荣尚,张争奇,赵战利.沥青混合料加速加载试验机开发及抗滑衰减模型研究[J].中外公路,2007(5):206-209.YANG Rongshang,ZHANG Zhenqi,ZHAO Zhanli.Development of asphalt mixture accelerated load testing machine and study on anti-slip decay model[J].Journal of China & Foreign,2007(5):206-209.(in Chinese)