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探讨木屑生物沥青(MX)添加于传统沥青的流变特性。将MX和传统黏结料(70号沥青和90号沥青)分别依重量百分比1∶1、1∶2、1∶3及1∶4掺配,进行基本物理性质试验与使用动态剪切流变仪(DSR)于不同试验条件下研究沥青黏结料的流变行为,探讨不同MX添加于传统沥青的黏度与蠕变行为。研究结果表明:沥青黏结料的复合模量(G*)随MX含量增加而上升,相位角则反之,同时可降低老化现象并有助于抵抗车辙,由于MX含丰富矿物填充料,沥青黏结料容易产生离析现象。DSR试验得到MX改性沥青黏结料的零剪切黏度(ZSV)、稳态黏度(SSV)与低剪切黏度(LSV),三种黏度特性于低频时都不随剪应变率改变且黏度值相近,此区间的沥青黏结料特性稳定,因此可做为抗车辙指标。为木屑生物沥青的进一步的研究与工程应用奠定了理论基础。
Abstract：This study investigated the biological asphalt Sawdust(MX) was added to the rheological properties of conventional asphalt.In this study,MX and traditional bonding material(No.70 and No.90 asphalt bitumen),respectively,according to the weight percentage of 1∶1,1∶2,1∶3 and 1∶4 blending,the basic physical properties of the test and the use of dynamic shear flow rheometer(DSR) study the rheological behavior of asphalt adhesive material under different experimental conditions,to explore different MX added to conventional asphalt viscosity and creep behavior.The results showed that asphalt bonding material complex modulus(G*) with MX content increased with phase angle and vice versa,while reducing aging and helps resist rutting,due MX rich mineral filler,asphalt adhesive material prone to segregation phenomenon.DSR test MX modified asphalt adhesive material to obtain zero shear viscosity(ZSV),steady-state viscosity(SSV) and low shear viscosity(LSV),three viscosity characteristics do not change with the shear strain rate at low frequencies and viscosity values close asphalt adhesive material features of this interval is stable,and therefore can be used as anti-rutting indicators.This article further research and engineering applications sawdust biological asphalt laid the theoretical foundation.
[1]JULIAN MB,YOU ZP.Aging influence on rheology properties of petroleum-based asphalt modified with biobinder[J].Journal of Materials in Civil Engineering,2014,26(2):358-366.
[2]TANG S,WILLIAMS R C.Antioxidant effect of bio-oil additive esp on asphalt binder[C]//Proceedings of the 2009 Mid-Continent Transportation Research Symposium.Iowa:Iowa State University,2009.
[3]RAOUF M A,WILLIAMS RC.Temperature and shear susceptibility of a non-petroleum binder as a pavement material[C]//TRB2010 Anuual Meeting CD-ROM,2010.
[4]RAOUF M A,WILLIAMS RC.Determination of pre-treat-ment procedure required for developing bio-binders from bio-oils[C]//Proceedings of the 2009 Mid-Continent Transportation Research Symposium.Iowa:Ames.Iowa State University,2009.
[5]FINI E H,AL-QADI I L,YOU Z P,et al.Partial replacement of asphalt binder with bio-binder[J].International Journal of Pavement,2012,13(6):515-522.
[6]FINI E H,YANG S H.Characterization and application of manure-based bio-binder in asphalt industry[C]//Washingon,DC:2010.
基本信息:
中图分类号:U414
引用信息:
[1]周钏.木屑生物沥青对沥青结合料流变特性的影响[J].公路工程,2017,42(05):343-347.
基金信息:
国家自然科学基金项目(E080703)
2017-10-20
2017-10-20