A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
How to Improve the Miscibility of Asphalt Binder and Polyolefins by Phosphoric Acid
As it is known, the bitumen has excellent adhesive and waterproofing properties, but if used alone, it hasn’t good mechanical properties, for example, it becomes brittle at low temperatures (Fawcett et al. in J. Elastomers Plast. 31:334–352, 1999). In order to increase the mechanical properties of bitumen such as adhesion, elasticity, thermo-mechanical resistance, usually it is possible to add some polymer such as polyolefinic plastomers or styrenic plastomers (Fuentés-Audén et al. in Polym. Testing 27:1005–1012, 2008). However, polyolefinic plastomers are easily available, they have a low cost and display a higher stability than styrenic plastomers (Porto et al. in Appl. Sci. 9:742, 2019). The addition of polyolefins to bitumen leads to the creation of a biphasic structure, which is composed by a dispersed phase and a continuous phase. Unfortunately, polyolefin modified bitumen suffer from lack of storage stability and the polymer separates from bitumen gradually. This is due to a low compatibility between polymer and bitumen. The phase inversion (high compatibility) should occur in the modified bitumen depending mainly on the density, molecular weight, polarity and solubility (Zhu et al. in Eur. Polymer J. 54:18–38, 2014). The phase inversion often is not observed due to poor affinity between Polymer/Bitumen. The main goal of the present research is to improve the miscibility of polyolefinic plastomers and bitumen through phosphorus compounds which can change the bitumen structure in particular the asphaltenes aggregation pattern thanks to polar-polar interactions.
How to Improve the Miscibility of Asphalt Binder and Polyolefins by Phosphoric Acid
As it is known, the bitumen has excellent adhesive and waterproofing properties, but if used alone, it hasn’t good mechanical properties, for example, it becomes brittle at low temperatures (Fawcett et al. in J. Elastomers Plast. 31:334–352, 1999). In order to increase the mechanical properties of bitumen such as adhesion, elasticity, thermo-mechanical resistance, usually it is possible to add some polymer such as polyolefinic plastomers or styrenic plastomers (Fuentés-Audén et al. in Polym. Testing 27:1005–1012, 2008). However, polyolefinic plastomers are easily available, they have a low cost and display a higher stability than styrenic plastomers (Porto et al. in Appl. Sci. 9:742, 2019). The addition of polyolefins to bitumen leads to the creation of a biphasic structure, which is composed by a dispersed phase and a continuous phase. Unfortunately, polyolefin modified bitumen suffer from lack of storage stability and the polymer separates from bitumen gradually. This is due to a low compatibility between polymer and bitumen. The phase inversion (high compatibility) should occur in the modified bitumen depending mainly on the density, molecular weight, polarity and solubility (Zhu et al. in Eur. Polymer J. 54:18–38, 2014). The phase inversion often is not observed due to poor affinity between Polymer/Bitumen. The main goal of the present research is to improve the miscibility of polyolefinic plastomers and bitumen through phosphorus compounds which can change the bitumen structure in particular the asphaltenes aggregation pattern thanks to polar-polar interactions.
How to Improve the Miscibility of Asphalt Binder and Polyolefins by Phosphoric Acid
RILEM Bookseries
Di Benedetto, Hervé (editor) / Baaj, Hassan (editor) / Chailleux, Emmanuel (editor) / Tebaldi, Gabriele (editor) / Sauzéat, Cédric (editor) / Mangiafico, Salvatore (editor) / Caputo, Paolino (author) / Loise, Valeria (author) / Lupi, Francesca R. (author) / Lombardo, Emanuela (author)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Chapter: 126 ; 991-997
RILEM Bookseries ; 27
2021-09-26
7 pages
Article/Chapter (Book)
Electronic Resource
English
Effect of Poly Phosphoric Acid on Asphalt Binder Properties
| Online Contents | 2010
| British Library Online Contents | 2015