The phrase "aged index" is correct and usable in written English.
It can be used in contexts related to data, finance, or any field where an index is evaluated over time to reflect its age or historical performance.
Example: "The aged index of the stock market provides insights into long-term trends and investment strategies."
Alternatives: "mature index" or "historical index".
The RTFO aging index, absolute drop of complex viscosity and temperature aging indices were used to evaluate the bitumen preparation settings.
According to the rheological test, SBS-90 shows a larger complex modulus aging index and a smaller phase angle aging index than that of SBS-70.
Due to the UV aging, LDHs modified bitumen shows the lower softening point increment, viscosity aging index and complex modulus aging index in comparison with the unmodified bitumens, indicating their good UV aging resistance.
The aging index of asphalt and deterioration of SBS modified asphalt increase dramatically at UV aging temperature condition of 70 °C.
As a result of UV aging, softening point increment and viscosity aging index of bitumen were decreased by inorganic nanoparticles.
Each layer was studied with Fourier Transform Infrared Spectroscopy (FTIR) and an aging index is computed for comparison.
We plotted the two indicators (aging index and unemployment rate) to evaluate their different temporal trend from 1975 to 2011. Figure 2 clearly shows a significant increase of the aging index, while the unemployment rate had progressively decreased since 1991.
Open image in new window Fig. 2 Trend comparison between unemployment rate (in blue) and aging index (in red).
The mass change rate and viscosity aging index of the bitumen are decreased by OLSs after thin film oven test and pressure aging vessel aging.
Ageing index values show that the susceptibility to oxidative ageing is significantly reduced with the increase of nano-silica content, particularly in the case of long-term ageing.
