The Effect of Basalt Fiber on the Performance of Stone Mastic Asphalt

Abstract

Stone Mastic Asphalt (SMA) is a mixture design against rutting caused by intensive and heavy traffic loads. While modified bitumen needs to be used in this mixture, the use of cellulosic fibers is essential to prevent the infiltration of bitumen during the carriage of mixture due to high bitumen content. In this study, the effects of basalt fiber on the performance of SMA mixtures is investigated as an alternative to cellulosic fiber admixtures in the prevention of draindown. Raw materials commonly used in Turkey were chosen as Type-I graded limestone aggregate and B50/70 asphalt cement, according to the General Directorate of Highways. In total, 109 specimens were prepared by a gyratory compactor according to the superpave design method. Sixty of these specimens were basalt fiber added samples with a ratio from 0.1 % to 0.8 % by dry weight aggregate. An addition of basalt fiber of 0.6 % at 25 °C seriously increases the resilient modulus and tensile strength of the samples. In addition, 0.4 % basalt fiber mixed samples shows that the greatest resistance against permanent deformation according to the results of static uniaxial creep test performed at 40 °C. Basalt fibers have no positive effect when a decrement of bitumen viscosity exceeds the bitumen softening point at the end of repeated uniaxial tests. On the other hand, bitumen draindown and water damage test results are within acceptable limits.

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

“…La estabilización de mezclas asfálticas, especialmente mediante el uso de inhibidores de drenaje como las fibras de basalto, desempeña un papel crucial en la ingeniería de pavimentos y carreteras (Cetin et al, 2021). La importancia de esta práctica radica en su capacidad para mejorar significativamente la durabilidad, resistencia y vida útil de las superficies pavimentadas.…”

Recent Advances in Basalt Fiber Reinforced Asphalt Mixture for Pavement Applications

“…The inclusion of BFs in asphalt mixes can improve their water resistance. Cetin et al [ 45 ] found that the indirect tensile strength value at 0.6% of BFs was 75.6% higher than that of the control group. According to the quantitative results of the logistic damage model, for 0.4% dosing under 6 mm BF makes AC-13 mix, compared with the control group, the degree of freeze-thaw damage of asphalt mix is significantly reduced by about 25%, and the damage growth rate is significantly decreased by about 45% [ 62 ].…”

Uso de distintos tipos de fibras para mejorar las propiedades mecánicas de la mezcla asfáltica: Una revisión literaria

“…La prueba de susceptibilidad a la humedad de las mezclas, definida como la alteración de la mezcla asfáltica por el agua, es decir que, si el agua penetra en la mezcla asfáltica, daña la unión entre los agregados y el cemento asfáltico, acelerando así el deterioro del pavimento (Çetin, Evirgen, Karslioglu, y Tuncan, 2020). En esta prueba, Park y colaboradores mencionaron que la resistencia a la humedad de la mezcla asfáltica se determina comparando la resistencia a la tracción indirecta en estado seco y después del estado de congelación-descongelación de agua (Park, Shoukat, Yoo, y Lee, 2020).…”