Effect of chemical compositions on temperature susceptibility of bitumens

Abstract

The viscosity of five bitumens was measured at different temperatures and the viscosity-temperature relationship was developed to evaluate the temperature susceptibility of different bitumens. The generic fractions (i e, saturates, aromatics, resins and asphaltenes) of the bitumens were separated and tested by thin-layer chromatography with flame ionization detection (TLC-FID) and the effect of chemical compositions on temperature susceptibility of bitumens was analyzed using the linear regression method. The experimental results show that the four generic fractions play an inconsistent role in the temperature susceptibility of bitumens and the correlation degree of each fraction is somewhat different. The existence of aromatics and asphaltenes can lower the sensitivity to temperature changes whereas saturates and resins may have an adverse impact on the temperature susceptibility of bitumens. As for the correlation degrees, resins show the closest correlation with the temperature susceptibility of bitumens, then asphaltenes and aromatics, and the correlation between temperature susceptibility and saturates is relatively weak.

Effect of ultraviolet aging on rheological properties of organic intercalated layered double hydroxides modified asphalt

“…Asphalt is a viscoelastic material and its physical and rheological properties is highly sensitive to temperature variation, governed by the interaction of the individual constituents [17][18][19]. To understand the temperature dependence of asphalt, the temperature susceptibility is usually evaluated.…”

Optimal formulations of some asphalt concrete roadway protective impregnation compositions

“…Road bitumen BND 60/90 is an optimal material for asphalt concrete roadways at the latitudes with temperate and subtropical climate 3 . For modification of bitumen petroleum resin (BPR) which is a structuring additive, was chosen because it provides increased resistance of bitumen to the effect of high temperatures and water resistance 4,5 was selected. The use of petroleum resins as modifiers for bitumen are described in papers 4,[6][7][8][9] .It was earlier demonstrated 2 that the optimal content of petroleum resin in an impregnation composition is 15%.…”

Investigation Into Technological Parameters of Bitumen Batching in an Asphalt Mixing Plant

“…The existence of aromatics and asphaltenes can lower the sensitivity to temperature changes, whereas saturates and resins may have an adverse impact on the temperature susceptibility of bitumens. As for the correlation degrees, resins show the closest correlation with the temperature susceptibility of bitumens, then asphaltenes and aromatics, and the correlation between temperature susceptibility and saturates is relatively weak (Firoozifar et al 2011;Liang et al 2010). The physical properties of asphalt binder vary tremendously with temperature (Anderson 2011).…”