Evaluation of the Interfacial Interaction Ability between Basalt Fibers and the Asphalt Mastic

Abstract

The interfacial properties between the asphalt mastic and fibers plays an essential role in the fiber-enhanced asphalt mixture properties. However, there is a lack of comprehensive studies on the indicators to evaluate the interfacial interaction ability of fibers with the asphalt mastic. Therefore, this paper selected three types of basalt fibers (denoted as A-BF, B-BF and C-BF) coated with different impregnating agents to prepare the fiber asphalt mastic. The Dynamic Shear Rheometer (DSR) test-based indicators, pull-out strength, and adhesion work were used to access the fiber asphalt mastic interfacial interaction ability. The differences between different indicators were compared and analyzed. The results show that all the selected indicators in this paper can effectively reflect the different fiber asphalt mastic interfacial properties. The evaluation results with different indicators are consistent. The interfacial interaction between fibers and the asphalt mastic increases with increasing temperature. The evaluation result with adhesion work is the most accurate. However, the pull-out strength test is simple, and the test result correlates well with adhesion work, which can be adopted daily to evaluate the fiber asphalt mastic interfacial properties.

Research on properties of basalt fiber-reinforced asphalt mastic

“…The morphology of the fibers and the type of infiltration agent on the fiber surface affect the rheological properties of fiber asphalt mastic and lead to different effect mechanisms. Wu et al (2022b) also found that after adding basalt fiber to asphalt mastic, the complex modulus of the mastic increased while the phase angle decreased. Moreover, the impregnating agents critically impacted the rheological properties of asphalt mastic.…”

Estabilización De Mezclas Asfálticas Stone Mastic Asphalt (Sma) Mediante Inhibidores De Drenaje Como Fibras De Basalto

“…Además de su impacto en la resistencia a la segregación, Wu et al (2022c) destaca que las fibras de basalto también juegan un papel clave en la reducción de la susceptibilidad a la deformación plástica. Al reforzar la matriz asfáltica, estas fibras minimizan la tendencia de la mezcla a deformarse bajo cargas repetidas, proporcionando una mayor estabilidad y durabilidad al pavimento.…”