Direct and continuous methodological approach to study the ageing of fossil organic material by infrared microspectrometry imaging: application to polymer modified bitumen

Methods for Analyzing the Chemical Mechanisms of Bitumen Aging and Rejuvenation with FTIR Spectrometry

“…2) of aging (data not shown), while having an increase in the second series after 2d and further up to 29d, descending thereafter. An increase was also found with Lamontagne et al (2001b) and Mouillet et al (2008). The 1600 cm −1 can be an indicator with aging, but is much less reliable than the oxidation bands.…”

“…This could be an indication of volatile naphthene aromatics and heavier particles such as resins and asphaltenes as well. It was found by Lamontagne et al (2001b) and Mouillet et al (2008) that the aromaticity of bitumen tends to increase somewhat with aging in both lab and field environments as the heavier and less volatile chemicals in bitumen, notably resin and asphaltene, tend to be more aromatic. Tachon (2008) observed the SARA fractions with FTIR and found that the peak associated with polarity (around 3450 cm −1 ) is present in only the heavier resin and asphaltene fractions; although this was not correlated with bitumen aging.…”

Application of Bio-Modified Montmorillonite Clay to Enhance Asphalt Oxidation Resistance

“…The significant change in aging resistance confirms the better distribution and exfoliation of nanoclay plates with BNC-modified binder. These nano-particles have the role of oxygen barrier during the aging process and prevent the movement of lighter components of asphalt binder to slow the aging process (Lamontagne et al, 2001). Figure 5a shows the percent recovery values obtained from the MSCR test at 0.1 kPa.…”

“…This effect can be involved in reducing aging susceptibility due to presence of bio-binder molecules on the surface of nanoclay and reacting with asphalt molecules. While the application of bio-binder as an organic modifier helps improve the distribution of nanoclay by increasing the d-spacing of silica nano-platelets to improve the rheological performance of asphalt binder in high and intermediate temperature, it appears that biobinder also has a delaying effect of oxidation due to the relatively low affinity of bio-binder molecules for interaction with oxygen (Lamontagne et al, 2001). The relatively lower polarizability of bio-binder molecules which was shown elsewhere (Mousavi et al, 2016b), is well in-line with observations in this study showing BNCmodified binder has higher resistance to oxidation than both neat binder and NC modified binder.…”

On the Applicability of ATR-FTIR Microscopy to Evaluate the Blending between Neat Bitumen and Bituminous Coating of Reclaimed Asphalt

“…The past years, increasing attempts have demonstrated the ability of non-destructive tests to evaluate this problem. Attenuated total reflectance (ATR) spectra obtained by Fourier transform infrared (FTIR) spectroscopy is a widely utilized non-destructive test to study bitumen and especially to trace ageing evolution [16][17][18], to evaluate rejuvenation [19,20] or to evaluate the modification of bitumen [21,22]. ATR-FTIR spectroscopy is suitable to evaluate homogeneous individual components but not a heterogeneous composite material (such as an asphalt mixture), since it can only be applied in a single spot averaging the measuring spectra.…”