碱侵蚀对玄武岩纤维/沥青流变性能的影响  

Influence of alkali corrosion on rheological properties of basalt fiber/asphalt

作　　者：李理[1] 刘朝晖[1] 柳力[1] 李盛[1] 刘靖宇[1] LI Li;LIU Zhaohui;LIU Li;LI Sheng;LIU Jingyu(School of Traffic and Transportation Engineering,Changsha University of Science ＆ Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学交通运输工程学院,长沙410114

出　　处：《复合材料学报》2018年第8期2191-2198,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51678078)

摘　　要：为增强玄武岩纤维(BF)/沥青流变性能,采用1.0mol/L及2.5mol/L NaOH溶液对BF进行侵蚀,通过ESEM试验和FTIR试验对其表面细观形貌进行了细观观测及分析。结果表明:原样BF表面光滑,NaOH侵蚀后的BF呈现明显的NaOH产物包裹BF现象,且随着NaOH的浓度及侵蚀时间的增加,BF的—OH含量增加;通过ESEM试验、动态剪切流变仪(DSR)试验及低温弯曲流变仪(BBR)试验,研究了BF/沥青的拉拔断口形貌及流变性能。结果表明:随着BF的侵蚀程度越严重,沥青与BF粘结性能和BF/沥青流变性能越好,且得到了NaOH对BF侵蚀的最佳侵蚀时间和浓度分别为45min和2.5mol/L。In order to enhance the rheological properties of the basalt fiber（BF）/asphalt,BF was eroded by 1.0 mol/L and 2.5 mol/L NaOH solution.The micro topography of the BF surface was observed and analyzed by ESEM and FTIR test.The results show that the original BF is smooth,The BF erod by the NaOH shows a clear phenomenon of the NaOH products coating the BF,and with the increase of NaOH solution concentration and erosion time,the content of hydroxyl（—OH）of the BF is higher;The BF/asphalt of drawing fracture morphology and rheological properties were studied by ESEM、dynamic shear rheometer（DSR）and bending beam rheometer（BBR）test.The results show that the higher the degree of erosion of the BF by NaOH solution,the better the bond behavior of the asphalt with the BF and the rheological properties of the BF/asphalt,and the best erosion time and concentration of NaOH solution for BF erosion are 45 min and 2.5 mol/L,respectively.

关 键 词：道路工程 玄武岩纤维(BF) NAOH 侵蚀 流变性能 

分 类 号：TB332[一般工业技术—材料科学与工程]