碱侵蚀对玄武岩纤维沥青性能影响改善研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (7): 49-54.

碱侵蚀对玄武岩纤维沥青性能影响改善研究

李理, 刘朝晖, 柳力, 李盛

长沙理工大学交通运输工程学院,长沙410114

收稿日期:2017-04-11 出版日期:2017-07-28 发布日期:2017-07-28
作者简介:李理(1991-),男,硕士研究生,主要从事道路建筑新材料方面的研究,1004251096@qq.com。
基金资助:
国家自然科学基金(51678078)

STUDY ON THE EFFECT OF ALKALI CORROSION ON THE PERFORMANCE OF BASALT FIBER ASPHALT

LI Li, LIU Zhao-hui, LIU Li, LI Sheng

School of Traffic and Transportation Engineering, Changsha University of Science &
Technology, Changsha 410114, China

Received:2017-04-11 Online:2017-07-28 Published:2017-07-28

摘要/Abstract

摘要： 为增强玄武岩纤维(BF)在沥青中的加筋及增强效果,采用1.0 mol/L及2.5 mol/L的NaOH溶液对BF进行表面处理,通过环境扫描电镜和红外光光谱试验对其表面细观形貌进行了细观观测,原样BF表面光滑,NaOH处理后的BF呈现明显的皮芯结构,且随着NaOH的浓度及处理时间的增加,BF的羟基含量越高;通过软化点、5 ℃延度、车辙因子及环境扫描电镜试验等,研究了玄武岩纤维沥青的高、低温性能及拉拔断口形貌,随着BF的侵蚀程度越大,玄武岩纤维沥青性能越好,且得到了NaOH对BF侵蚀的最佳处理时间和浓度分别为45 min、2.5 mol/L。

关键词: 道路工程, 玄武岩纤维, 氢氧化钠, 表面处理, 性能改善

Abstract: In order to enhance the reinforcement and strengthening effect of basalt fiber (BF) in asphalt, surface treatment of BF by 1.0 mol/L and 2.5 mol/L NaOH solution was performed. The surface morphology of BF was observed by environmental scanning electron microscopy (ESEM) and infrared spectroscopy (IR) test. The results show that the surface of original BF was smooth, and BF showed a clear core structure by NaOH solution treated from the ESEM. With the increase of NaOH solution concentration and treatment time, the results show that the higher the -OH content of BF is from the IR test. The basalt fiber asphalt of high, low temperature performance and drawing fracture morphology were studied, by softening point, 5 ℃ ductility, rutting factor and ESEM test. The results show that the higher the degree of erosion of BF by NaOH solution, the better the performance of basalt fiber asphalt. And, the best treatment time and concentration of NaOH solution for BF erosion were: 45 min, 2.5 mol/L.

Key words: road engineering, basalt fiber (BF), sodium hydroxide (NaOH), surface treatment, performance improvement

中图分类号:

TB332

李理, 刘朝晖, 柳力, 李盛. 碱侵蚀对玄武岩纤维沥青性能影响改善研究[J]. 玻璃钢/复合材料, 2017, 0(7): 49-54.

LI Li, LIU Zhao-hui, LIU Li, LI Sheng. STUDY ON THE EFFECT OF ALKALI CORROSION ON THE PERFORMANCE OF BASALT FIBER ASPHALT[J]. Fiber Reinforced Plastics/Composites, 2017, 0(7): 49-54.

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