Investigation on Fatigue Performance of Asphalt Mixture Reinforced by Basalt Fiber

Abstract

Basalt fiber has been widely used in asphalt mixture due to its excellent mechanical properties and good combination with asphalt. In order to systematically evaluate the enhancement effect of basalt fiber on the fatigue performance of the mixtures, gradations of Stone Mastic Asphalt and Superpave with different nominal maximum aggregate sizes, namely SMA-13, SUP-20 and SUP-25, were prepared, and a four-point bending beam fatigue test was adopted under the strain control mode. The fatigue damage mode was assessed based on the phenomenology theory, energy dissipation theory and change rate of dissipated energy. The results showed that basalt fiber could well increase the fatigue life of the mixtures. Basalt fiber could also increase the cumulative dissipated energy of the mixtures, and it was linearly correlated with the fatigue life in double logarithmic coordinates. In the meantime, adding basalt fiber could increase the change rate of dissipated energy of the mixtures. Furthermore, it is not appropriate to take the stiffness modulus declined to 50% of the original as the fatigue failure criterion of the mixture; this paper suggested that it is reasonable when the stiffness modulus was 15–25% that of the initial. These findings provide a theoretical basis for exploring the fatigue failure of asphalt pavements.

Investigation on Fatigue Performance of Diatomite/Basalt Fiber Composite Modified Asphalt Mixture

“…Although the cumulative dissipation energy of BFAM is roughly the same as that of AM, the addition of basalt fiber can enhance and prevent cracks. After the addition of fiber, it can prevent the propagation of original defects (microcracks) in the asphalt mixture and effectively delay the initiation of new cracks [ 14 , 17 , 28 , 44 ].…”

“…It is found that the rate dissipated energy change of asphalt mixture has only two stages, and the third stage does not appear. That is, when the modulus of the asphalt mixture reaches 50%, the failure stage of the asphalt mixture has not been reached [ 17 ]. However, RDEC in the second stage is in a stable state, so the plateau value (PV) is still calculated by using the average value of the change rate of dissipative energy in the second stage (600–1700 Cycles).…”

“…It can be seen from Table 9 that the PV value increases slightly after adding basalt fiber. It means that the energy loss of the asphalt mixture could well increase after adding basalt fiber [ 17 , 28 ]. The PV value decreased after adding diatomite and two materials, indicating that the fatigue resistance of DAM and DBFAM is better than AM.…”

“…Riekstins et al [ 16 ] evaluated the anti-fatigue property of brucite fiber reinforced asphalt mixture under sulfate and dry-wet circle corrosion environments. Lou et al [ 17 ] evaluated the enhancement effect of basalt fiber on the fatigue performance of the mixtures.…”

An Experimental Study of the Mechanical Properties of Partially Rehabilitated Cable Tunnels

“…On the other hand, many researchers have studied the high-performance cement mortar materials: Li [ 11 ] studied the mechanical properties of aramid/carbon hybrid fiber-reinforced concrete; Haroon [ 12 ] studied the performance of reinforced concrete beams strengthened with carbon fiber reinforced polymer strips; and Shi [ 13 ] studied the effect of desert sand on the pore structure of fiber reinforced mortar. As for polymer materials, most research has focused on the polymer materials modified with fibers and inorganic materials: Li [ 14 ] studied the anisotropic mechanical response and strain localization of a metallic glassy-fiber-reinforced polyethylene terephthalate fabric; Lionetto [ 15 ] studied carbon fiber reinforced polymers; Park [ 16 ] studied a microwave composite forming process based on a sic mold for manufacturing fiber metal laminate; and Lou [ 17 ] investigated the fatigue performance of an asphalt mixture reinforced by basalt fiber.…”