General description
Physicochemical Stabilization of Asphalt Using INHITONE® Formulations
The INHITONE® technology platform is based on the targeted physicochemical stabilization of asphalt binders through the controlled interaction with chemically reactive and volatile components present in bituminous materials. Asphalt is a complex, polydisperse hydrocarbon system whose long-term performance is governed not only by its mechanical properties, but also by the chemical stability of its molecular structure under thermal, oxidative and photochemical stress.
Under high-temperature operating conditions, particularly in hot climates, asphalt binders undergo progressive degradation driven by oxidation, volatilization of low-molecular-weight fractions and the formation of reactive intermediates. These processes lead to continuous material losses in the form of organic emissions, changes in binder composition, and gradual deterioration of rheological and durability-related properties. Conventional asphalt formulations and mechanical modifiers are primarily designed to address load-bearing capacity and deformation resistance, while the chemical stability and emission behavior of the binder remain insufficiently controlled.
INHITONE® formulations are designed to intervene at the chemical level of the binder by stabilizing reactive molecular sites and limiting the mobility and evaporation of volatile fractions. Through specific physicochemical interactions, the technology shifts the equilibrium of reactive components toward retention within the asphalt matrix, thereby reducing emissions and slowing degradation pathways. This approach does not rely on passive adsorption mechanisms, but on active stabilization and controlled modification of the binder’s chemical environment.
As a result, the treated asphalt exhibits improved resistance to thermal and oxidative aging, enhanced stability of its physicochemical properties over time, and reduced emission of volatile organic compounds during both production and service life. By retaining valuable hydrocarbon fractions within the material, INHITONE® contributes to improved material efficiency, extended pavement service life and reduced maintenance requirements.
The technology is designed for integration into existing downstream and asphalt production processes without the need for major capital investments. Application is achieved through dedicated dosing systems, enabling precise control, repeatability and adaptation to local feedstocks and operating conditions. Performance is validated through laboratory testing, semi-industrial trials and field benchmarking under representative environmental and operational conditions.
INHITONE® represents a chemistry-driven approach to asphalt improvement, addressing the root causes of degradation and emissions rather than their secondary effects. This makes the technology particularly relevant for infrastructure systems operating under elevated temperatures, where long-term durability, environmental performance and material efficiency are critical factors.