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

Abstract

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

CLC Number:

TB332

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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