超微表处配比设计及功能特性
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摘要
在两类离子乳化沥青中加入6种添加剂和8种填料,确定两者最佳质量分数,对超微表处材料进行性能优化设计;为进一步研究超微表处材料的路用性能,对其抗滑性、融雪性、降噪性和耐磨耗性进行试验,利用软化系数评价其耐水性.结果表明:当悬浮剂、增稠剂、增韧剂、成膜剂、润湿剂及SBS胶乳掺量分别为5.0%, 2.0%, 20.0%, 15.0%, 0.6%和15.0%时,乳液性能最优;加铺超微表处材料的路面构造深度减小,摩擦系数明显增大,且在0℃饱水100.0 h后融雪盐持续均匀析出;加铺超微表处混合料路面的噪音值较原路面减小了2.4～2.8 dB;湿轮磨耗值和加载磨耗值明显减小,显著提高了路面的抗滑性、融雪性、降噪性和耐磨耗性;对比原路面,加铺超微表处路面饱水100.0 h的软化系数可达86.3%,具有优异的耐水性.
For the purpose of designing high-performance super micro-surfacing, six kinds of additives and eight kinds of fillers were added to the two kinds of ion emulsified asphalt, and the optimum content was determined. To further investigate the road performance of super micro-surfacing materials, the tests were carried out to analyze the properties of skid resistance, snow melting, noise reduction and wear resistance, and the water resistance property was evaluated by softening coefficient. The results show that the emulsion performance is optimal when the contents of suspension agent, thickener, toughening agent, film forming agent, wetting agent and SBS latex are 5.0%, 2.0%, 20.0%, 15.0%, 0.6% and 15.0%, respectively. With overlaying the super micro-surfacing material, the pavement structure depth is reduced, and the friction coefficient is increased obviously with almost homogeneous melting salt at 0 ℃ for 100.0 h in water-saturation and decreased noise by 2.4 to 2.8 dB. The wet wheel wear and the load abrasion are decreased significantly. The skid resistance, snow melting, noise reduction and wear resistance properties of original pavement are improved significantly. Compared with the original pavement, the softening coefficient of pavement with overlaying super micro-surfacing material under saturated water condition for 100 h can reach 86.3%, which shows that the material has excellent water resistance property.
For the purpose of designing high-performance super micro-surfacing, six kinds of additives and eight kinds of fillers were added to the two kinds of ion emulsified asphalt, and the optimum content was determined. To further investigate the road performance of super micro-surfacing materials, the tests were carried out to analyze the properties of skid resistance, snow melting, noise reduction and wear resistance, and the water resistance property was evaluated by softening coefficient. The results show that the emulsion performance is optimal when the contents of suspension agent, thickener, toughening agent, film forming agent, wetting agent and SBS latex are 5.0%, 2.0%, 20.0%, 15.0%, 0.6% and 15.0%, respectively. With overlaying the super micro-surfacing material, the pavement structure depth is reduced, and the friction coefficient is increased obviously with almost homogeneous melting salt at 0 ℃ for 100.0 h in water-saturation and decreased noise by 2.4 to 2.8 dB. The wet wheel wear and the load abrasion are decreased significantly. The skid resistance, snow melting, noise reduction and wear resistance properties of original pavement are improved significantly. Compared with the original pavement, the softening coefficient of pavement with overlaying super micro-surfacing material under saturated water condition for 100 h can reach 86.3%, which shows that the material has excellent water resistance property.
引文
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[2] 范斌卫.沥青路面雾封层应用技术研究[D].西安:长安大学,2012.
[3] 欧振平.微表处技术在高速公路养护工程中的应用[D].广州:华南理工大学,2011.
[4] 王朝辉,殷卫永,孙晓龙,等.环保型降温微表处制备及其功效[J].中国公路学报,2017,30(7):9-17.WANG C H,YIN W Y,SUN X L,et al.Preparation and effect of environment-friendly cooling micro-surfacing[J].China Journal of Highway and Transport,2017,30(7):9-17.(in Chinese)
[5] 吴平,王选仓.抗冻型微表处沥青混合料的路用性能及抗冻性能[J].北京工业大学学报,2017,43(1):143-149.WU P,WANG X C.Road performance and antifreeze property of antifreeze micro-surfacing asphalt mixture[J].Journal of Beijing University of Technology,2017,43(1):143-149.(in Chinese)
[6] 黎侃,李新伟,王端宜.聚丙烯单丝纤维微表处路用性能研究[J].公路交通科技,2013,30(8):17-22.LI K,LI X W,WANG D Y.Study on road performances of micro-surfacing mixed with polypropylene filament fiber[J].Journal of Highway and Transportation Research and Development,2013,30(8):17-22.(in Chinese)
[7] 孙晓立,张肖宁,蔡旭.基于加速加载试验的微表处长期路用性能[J].同济大学学报(自然科学版)2012,40(5):691-695.SUN X L,ZHANG X N,CAI X.Accelerated test-based study of long-term pavement performance of micro-surfacing[J].Journal of Tongji University(Natural Science),2012,40(5):691-695.(in Chinese)
[8] COLINO A.Evaluation of a modification of current micro-surfacing mix design procedures[J].Canadian Journal of Civil Engineering,2015,42(5):319-328.
[9] DO M T,TANG Z Z,KANE M,et al.Pavement poli-shing-development of a dedicated laboratory test and its correlation with road results[J].Wear,2007,263:36-42.
[10] 暴兴才.水性环氧树脂掺量对微表处混合料技术性能的影响[J].公路工程,2015,40(5):161-164,213.BAO X C.The influence of waterborne expoxy content on technical performance of micro-surfacing mixture[J].Highway Engineering,2015,40(5):161-164,213.(in Chinese)
[11] 王业飞,张丁涌,乐小明.阴离子表面活性剂在油砂和净砂表面的吸附规律[J].石油大学学报(自然科学版),2002,26(3):59-61.WANG Y F,ZHANG D Y,LE X M.Absorption of anionic surfactant on the surface of sandstone before and after solvent extraction[J].Journal of the University of Petroleum,China(Edition of Natural Science),2002,26(3):59-61.(in Chinese)
[12] 常嵘.微胶囊融雪剂及融雪雾封层研究[D].西安:长安大学,2013.
[13] 陈杰.盐化物融雪沥青路面耐久性及其融雪持久性研究[D].西安:长安大学,2013.
[14] 何壮彬,覃峰.橡胶水泥混凝土力学特征及降噪性能研究[J].公路工程,2013,38(5):128-131,145.HE Z B,QIN F.Mechanical characteristics and noise reduction performance of rubberized concrete[J].Highway Engineering,2013,38(5):128-131,145.(in Chinese)
[15] 付凯敏,彭彬,陈京钰.高速公路沥青混凝土路面微表处减噪技术研究[J].公路,2010(11):203-206.FU K M,PENG B,CHEN J Y.Research on noise reduction technology of expressway asphalt concrete pavement micro-surfacing[J].Highway,2010(11):203-206.(in Chinese)