A platform for research: civil engineering, architecture and urbanism
Phyto-based sodium chloride hydrogel for highway winter maintenance of porous asphalt pavements
Highlights Permeable asphalt pavements show winter maintenance issues in cold climate environments. An innovative anti-icing technology based on the hot liquid spray application of a saline gel was developed. The hydrogel was formulated by exploiting the gelling properties of seaweed polysaccharides. The blend has the ability to form a gel by coming into contact with a cold pavement surface. A full-scale validation was carried out on an existing highway porous asphalt pavement.
Abstract The need of the highway agencies to customize their winter maintenance operations on porous asphalt pavements prompted the authors to develop an innovative anti-icing technology based on the hot liquid spray application of a saline hydrogel. A bio-based (phyto-based) thermo-sensitive sodium chloride (NaCl) brine, that has the ability to form a gel simply by coming into contact with a very cold surface, was conceived. The increase in viscosity and the formation of a gel-like structure would make this anti-icing product able of filling the surface voids without permeating through the mixture (longer residual deicing effectiveness), while maintaining at the same time the pavement frictional resistance. In view of adopting sustainable winter maintenance strategies, this innovative blend was formulated by exploiting the thickening and gelling properties of wall-cell polysaccharides contained in seaweeds fibers. The mechanisms of gel formation were experimentally studied in laboratory, analyzing in detail the thermal and rheological properties of the salt hydrogel during the different phases of preparation, storage and application. On the basis of this characterization, a full-scale validation was carried out on an existing highway porous asphalt pavement. For this purpose, a tank truck prototype was equipped with a heating capacity tank and a customized specific spraying system.
Phyto-based sodium chloride hydrogel for highway winter maintenance of porous asphalt pavements
Highlights Permeable asphalt pavements show winter maintenance issues in cold climate environments. An innovative anti-icing technology based on the hot liquid spray application of a saline gel was developed. The hydrogel was formulated by exploiting the gelling properties of seaweed polysaccharides. The blend has the ability to form a gel by coming into contact with a cold pavement surface. A full-scale validation was carried out on an existing highway porous asphalt pavement.
Abstract The need of the highway agencies to customize their winter maintenance operations on porous asphalt pavements prompted the authors to develop an innovative anti-icing technology based on the hot liquid spray application of a saline hydrogel. A bio-based (phyto-based) thermo-sensitive sodium chloride (NaCl) brine, that has the ability to form a gel simply by coming into contact with a very cold surface, was conceived. The increase in viscosity and the formation of a gel-like structure would make this anti-icing product able of filling the surface voids without permeating through the mixture (longer residual deicing effectiveness), while maintaining at the same time the pavement frictional resistance. In view of adopting sustainable winter maintenance strategies, this innovative blend was formulated by exploiting the thickening and gelling properties of wall-cell polysaccharides contained in seaweeds fibers. The mechanisms of gel formation were experimentally studied in laboratory, analyzing in detail the thermal and rheological properties of the salt hydrogel during the different phases of preparation, storage and application. On the basis of this characterization, a full-scale validation was carried out on an existing highway porous asphalt pavement. For this purpose, a tank truck prototype was equipped with a heating capacity tank and a customized specific spraying system.
Phyto-based sodium chloride hydrogel for highway winter maintenance of porous asphalt pavements
Autelitano, Federico (author) / Longo, Sandro (author) / Giuliani, Felice (author)
2021-12-09
Article (Journal)
Electronic Resource
English
Phyto-based sodium chloride hydrogel for highway winter maintenance of porous asphalt pavements
BASE | 2022
|Winter Maintenance of Porous Asphalt Pavements
British Library Conference Proceedings | 2003
|Winter Maintenance of Porous Asphalt Pavements
British Library Conference Proceedings | 2003
|Winter Tenting of Highway Pavements
British Library Conference Proceedings | 1998
|