高黏剂掺量对沥青的性能影响研究
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摘要
为研究国产TPS高黏剂和国产HVA高黏剂在不同掺量下对基质沥青的性能影响,对TPS和HVA高黏改性沥青进行针入度、软化点、延度、60℃动力粘度、黏韧性、PG分级等试验,分别测试高黏改性沥青的稠度、耐高温性、弹塑性、黏弹性、高低温稳定性等性能,并对两种高黏改性沥青的试验结果进行对比分析,研究两种高黏剂对沥青各性能的影响,提出两种高黏剂的合理掺量。研究结果表明,同高黏剂掺量下,HVA高黏改性沥青的各项基本性能均优于TPS高黏改性沥青;综合各项性能指标,TPS高黏剂和HVA高黏剂的最低掺量分别为16%和12%,最佳掺量分别为20%和14%;14%掺量的HVA高黏改性沥青与20%掺量的TPS高黏改性沥青的各性能大小相当,工程中可采用较低掺量的HVA代替较高掺量的TPS,能够降低施工经济成本。
In order to study the effect of domestic TPS high viscosity agent and domestic HVA high viscosity agent on the performance of matrix asphalt under different dosages,penetration,softening point,ductility,60℃ dynamic viscosity,the viscosity toughness and PG test of asphalt are tested separately.The consistency,high temperature resistance,elasticity and plasticity,viscosity and other properties of high-viscosity modified asphalt are characterized separately.The test results of two high-viscosity modified asphalts are compared and evaluated,the differences of the effects of two high-viscosity agents on asphalt properties are evaluated,and the reasonable amount of two high viscosity agents are proposed.The conclusions of the study are as follows:under the same high viscosity agent dosage,the basic properties of HVA high viscosity modified asphalt are better than TPS high viscosity modified asphalt;synthesizing the various properties,the minimum dosage of TPS high viscosity agent is 16%,the optimum dosage of TPS high viscosity agent is 20%;the minimum dosage of HVA high viscosity agent is about 12%,the optimum dosage is 14%;each performance of 14% of HVA high viscosity modified asphalt and 20% of TPS high viscosity modified asphalt is equivalent.In engineering,it is possible to reduce the construction cost greatly by using low content of HVA high viscosity agent instead of high content of TPS high viscosity agent.
In order to study the effect of domestic TPS high viscosity agent and domestic HVA high viscosity agent on the performance of matrix asphalt under different dosages,penetration,softening point,ductility,60℃ dynamic viscosity,the viscosity toughness and PG test of asphalt are tested separately.The consistency,high temperature resistance,elasticity and plasticity,viscosity and other properties of high-viscosity modified asphalt are characterized separately.The test results of two high-viscosity modified asphalts are compared and evaluated,the differences of the effects of two high-viscosity agents on asphalt properties are evaluated,and the reasonable amount of two high viscosity agents are proposed.The conclusions of the study are as follows:under the same high viscosity agent dosage,the basic properties of HVA high viscosity modified asphalt are better than TPS high viscosity modified asphalt;synthesizing the various properties,the minimum dosage of TPS high viscosity agent is 16%,the optimum dosage of TPS high viscosity agent is 20%;the minimum dosage of HVA high viscosity agent is about 12%,the optimum dosage is 14%;each performance of 14% of HVA high viscosity modified asphalt and 20% of TPS high viscosity modified asphalt is equivalent.In engineering,it is possible to reduce the construction cost greatly by using low content of HVA high viscosity agent instead of high content of TPS high viscosity agent.
引文
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[2] VOSKUILEN J L M,VERHOEF P N W.Causes of premature raveling failure in porous asphalt[R].Sixth International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials,2003.
[3]赵济平.HVA高黏透水沥青路面技术的试验研究[J].市政技术,2018,36(2):31-33.
[4]冯芳.透水路面高黏改性沥青的高低温性能评价[J].城市道桥与防洪,2018(7):285-288,292.
[5]丛卓红,吴喜荣,郑南翔,等.高黏度改性剂对沥青性能的影响[J].重庆交通大学学报(自然科学版),2011,30(4):759-762.
[6]冯旭阳.高黏改性沥青改性剂在透水性路面中的应用研究综述[C]//中国科学技术协会、交通运输部、中国工程院.2018世界交通运输大会论文集.北京:中国公路学会,2018.
[7]孙岳,邢明亮,王小雯,等.短期老化对TPS改性沥青性能影响研究[J].公路,2018,63(4):212-217.
[8]郭咏梅,倪富健.基于DSR的改性沥青及混合料动态黏弹性能[J].东南大学学报(自然科学版),2014,44(2):386-390.
[9]封基良.沥青BBR小梁试验的流变分析[J].武汉理工大学学报(交通科学与工程版),2006,32(2):205-208.
[10]蒋玮,沙爱民,肖晶晶,等.透水沥青路面对洁净水体和地表径流水质的影响[J].长安大学学报(自然科学版),2017,37(1):10-16.
[11]辜延艳.海绵城市建设存在问题及对策[J].福建建筑,2017(7):161-163.
[12]仇保兴.海绵城市(LID)的内涵、途径与展望[J].中国勘察设计,2015(7):1-7
[13]邢明亮.透水性沥青混合料组成设计与性能研究[D].西安:长安大学,2007.
[14]FIELD R,MASTERS H,SINGER M.Status of Porous Pave-mentresearch[J].waterResearch,1982,16(6):849-858.
[15]蒋玮.透水沥青路面混合料配合比设计方法与路用性能研究[D].西安:长安大学,2008.
[16]潘翔.大孔隙排水沥青混合料下面层路用性能试验分析[J].交通标准化,2011(1):75-77.
[17]PUTMAN B J,KLINE L C.Comparison of Mix Design Methods for Porous Asphalt Mixtures[J].Journal of Materials in Civil Engineering,2012,24:1359-1367.
[18]SMITH R W,RICE J M,SPELMAN S R.Design of Open-graded Asphalt Friction Course,FHWA Report No.FHWA-RD-74-2, Washington D.C.January1974.
[19]刘衡.高黏改性沥青混合料设计与性能研究[D].辽宁大连:大连理工大学,2013.
[20]李晓娟.OGFC沥青混合料路用性能研究[D].西安:长安大学,2008.