Creep characteristics of crumb rubber modified asphalt binder

Abstract

Crumb rubber modified asphalt containing 20 percent crumb rubber particles of 30 mesh has been examined by Scanning Electron Microscope (SEM) to observe the microcosmic appearance and the characteristic distribution of crumb rubber particles in asphalt. The SEM pictures reveal that the crumb rubber particles distribute evenly in the asphalt and they are compatible well with asphalt. The shear creep test of crumb rubber modified asphalt was carried out at -10 ℃ and 40 ℃ by Dynamic Shear Rheology (DSR). The shearing deformation at different temperature and creep stiffness modulus curve at loading stage of crumb rubber modified asphalt have been measured. The stiffness modulus of crumb rubber modified asphalt is much temperature sensitive and it decays much quick at the early stage of loading than normal asphalt. The rate of decay of stiffness modulus is slow at the subsequent stage and stiffness modulus approaches to a stable value at the final stage at a higher temperature. In addition, Burgers model is suitable to describe and simulate experimental results of viscoelastic properties of the crumb rubber modified asphalt.

Investigation of the ultraviolet aging resistance of organic layered double hydroxides modified bitumen

“…The instantaneous elastic strain of bitumen disappeared after unloading, and the delayed elastic strain recovered gradually. The unrecoverable viscoelastic strain is the permanent strain [33]. The total strain, permanent strain and deformation recovery rate for all samples are displayed in Table 4.…”

Fast Charging Limits of Ideally Stable Metal Anodes in Liquid Electrolytes

“…The understanding and modeling of this critical process followed the insights from the classic Young–Laplace pressure, which has also been implemented for the gas/water interface in the porous gas diffusion layers of fuel cells. [ 33,34 ] However, to the best of our knowledge, our model is the first one handling a solid–liquid interface that directly correlates with the electrochemical driving force.…”

Recycling Tire Rubber in Asphalt Pavements: State of the Art

“…Other studies also reported that the use of recycled tire rubber waste in asphalt mixtures lowered thermal susceptibility [2,40], reduced penetration, enhanced the softening point temperature, and, as a result, increased the stability of the asphalt mixtures [41,42]. In addition, the rough surface of the crumb rubber particles increased the cohesion between the asphalt and rubber particles, leading to enhanced functionality and performance of the crumb rubber-modified asphalts [43].…”