Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Characterising the modifying efficiency of polyphosphoric acid to bitumens with different oil sources
To explore the properties and mechanism of different polyphosphoric acid (PPA)-modified bitumen, this research selected three bitumens with different oil sources and two PPAs with different relative H3PO4 contents (which are 105%, 115%, namely 105 and 115 grade PPA, respectively). A succession of tests and analyses was conducted to explore the performance of the PPA-modified bitumens. The physical performance test results show that PPA improves the high-temperature performance of the bitumens, and it has different modification effects on the three bitumens. When PPA reacted with the bitumen that has a higher content of polar components, the performance variation of the bitumen was higher than the other two kinds of bitumens. Furthermore, the 115-grade PPA seemed to have a better modified efficiency than that of the 105-grade PPA due to the longer molecular chain length. This also leads to the entanglement of molecular chains of PPA-modified bitumen was more significant with the 115-grade PPA. Therefore, the 115-grade PPA-modified bitumen shows a large asphaltene agglomeration in the AFM diagram.
Characterising the modifying efficiency of polyphosphoric acid to bitumens with different oil sources
To explore the properties and mechanism of different polyphosphoric acid (PPA)-modified bitumen, this research selected three bitumens with different oil sources and two PPAs with different relative H3PO4 contents (which are 105%, 115%, namely 105 and 115 grade PPA, respectively). A succession of tests and analyses was conducted to explore the performance of the PPA-modified bitumens. The physical performance test results show that PPA improves the high-temperature performance of the bitumens, and it has different modification effects on the three bitumens. When PPA reacted with the bitumen that has a higher content of polar components, the performance variation of the bitumen was higher than the other two kinds of bitumens. Furthermore, the 115-grade PPA seemed to have a better modified efficiency than that of the 105-grade PPA due to the longer molecular chain length. This also leads to the entanglement of molecular chains of PPA-modified bitumen was more significant with the 115-grade PPA. Therefore, the 115-grade PPA-modified bitumen shows a large asphaltene agglomeration in the AFM diagram.
Characterising the modifying efficiency of polyphosphoric acid to bitumens with different oil sources
Liu, Guiyong (Autor:in) / Yang, Xiaolong (Autor:in) / Zhu, Xiaolin (Autor:in) / Rong, Hongliu (Autor:in)
31.12.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
NMR Analysis of Polyphosphoric Acid-modified Bitumens
| Taylor & Francis Verlag | 2008
Asphalt Modification with Polyphosphoric Acid
| British Library Conference Proceedings | 2006
METHOD FOR OBTAINING AN ADDITIVE FOR MODIFYING OIL BITUMENS
| Europäisches Patentamt | 2021
Polyphosphoric Acid Binder Modification
| Online Contents | 2010