ArticlePloS one2026
Rheological characteristics and modification mechanism of rock asphalt compound modified binder based on grey relational analysis.
Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To address the limitations of conventional asphalt in resisting high-temperature rutting and oxidative aging, a Rock Asphalt Compound additive (RCA) -comprising natural rock asphalt with surface-treated Nano-TiO2-was investigated as a sustainable modifier. This study systematically evaluates the rheological performance and modification mechanism of RCA-modified A-90# asphalt binders with dosages ranging from 0% to 31.6%. The viscoelastic behaviors were characterized using Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR), and Rotational Viscosity (RV) tests, while the chemical interactions were probed via FTIR spectroscopy. Furthermore, Grey Relational Analysis (GRA) was innovatively introduced to quantify the sensitivity of performance indicators to RCA dosage. Results indicate that RCA fundamentally alters the colloidal structure of the binder, acting as a potent stiffening agent. The high-temperature rutting factor (G*/sinδ) increases exponentially with dosage, and the Penetration Index (PI) improves from -1.392 to -0.354, indicating reduced temperature susceptibility. FTIR analysis confirms the modification is primarily a physical blending process, enhanced by the introduction of polar functional groups (S = O, C = O). Crucially, GRA results quantitatively identify that the dominant function of RCA is the enhancement of aging resistance (R = 4.3430), followed by stiffness (R = 3.7567), surpassing its effect on ductility. However, high dosages negatively impact low-temperature relaxation (m-value). Considering the trade-off between the significant gains in anti-aging/rutting performance and the limitations in thermal cracking, an optimal dosage of 21.8% is recommended. At this dosage, the binder achieves a superior rutting factor of 25.5 kPa (64°C) while maintaining an m-value of 0.311 (-12°C), satisfying Superpave specifications.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.