Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effects of silane coupling agent modified coal waste powder on performance of asphalt mortar and asphalt mixture
In view of the disadvantage that coal waste powder(CWP) can reduce the crack resistance of asphalt mortar at low temperature, silane coupling agent KH-550 was used to modify coal waste powder. The surface characteristics and modification mechanism of silane coupling agent modified coal waste powder were characterized by using Scanning Electronic Microscopy (SEM). Five kinds of silane coupling agent modified coal waste powder asphalt mortar with content 0%, 0.5%, 1.0%, 1.5%, 2.0% and limestone(LS) powder asphalt mortar were prepared under different filler-asphalt ratios, respectively. The effects and mechanism of silane coupling agent modified coal waste powder on the pavement performance of asphalt mortar and asphalt mixture was studied by the dynamic shear rheological test(DSR), low temperature bending beam rheological test (BBR), Brookfield viscosity test, adhesion test, Fourier Transform Infrared Spectroscopy (FTIR), rutting test, bending test at low temperature, immersion Marshall test and freeze-thaw split test. The results showed that the optimal proportion of KH-550 is 1.5% of CWP mass and CWP modified by silane coupling agent can greatly enhance high temperature performance, low temperature performance and adhesion of the asphalt mortar. Furthermore, CWP modified by silane coupling agent can significantly improve rutting resistance, low temperature crack resistance and water damage resistance of asphalt mixture.
Effects of silane coupling agent modified coal waste powder on performance of asphalt mortar and asphalt mixture
In view of the disadvantage that coal waste powder(CWP) can reduce the crack resistance of asphalt mortar at low temperature, silane coupling agent KH-550 was used to modify coal waste powder. The surface characteristics and modification mechanism of silane coupling agent modified coal waste powder were characterized by using Scanning Electronic Microscopy (SEM). Five kinds of silane coupling agent modified coal waste powder asphalt mortar with content 0%, 0.5%, 1.0%, 1.5%, 2.0% and limestone(LS) powder asphalt mortar were prepared under different filler-asphalt ratios, respectively. The effects and mechanism of silane coupling agent modified coal waste powder on the pavement performance of asphalt mortar and asphalt mixture was studied by the dynamic shear rheological test(DSR), low temperature bending beam rheological test (BBR), Brookfield viscosity test, adhesion test, Fourier Transform Infrared Spectroscopy (FTIR), rutting test, bending test at low temperature, immersion Marshall test and freeze-thaw split test. The results showed that the optimal proportion of KH-550 is 1.5% of CWP mass and CWP modified by silane coupling agent can greatly enhance high temperature performance, low temperature performance and adhesion of the asphalt mortar. Furthermore, CWP modified by silane coupling agent can significantly improve rutting resistance, low temperature crack resistance and water damage resistance of asphalt mixture.
Effects of silane coupling agent modified coal waste powder on performance of asphalt mortar and asphalt mixture
Int. J. Pavement Res. Technol.
Feng, Xinjun (Autor:in) / Chen, Wang (Autor:in) / Li, Wang (Autor:in)
International Journal of Pavement Research and Technology ; 13 ; 383-391
01.07.2020
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Surface modification of basalt with silane coupling agent on asphalt mixture moisture damage
British Library Online Contents | 2015
Effects of surface modified phosphate slag powder on performance of asphalt and asphalt mixture
| British Library Online Contents | 2018
Effects of surface modified phosphate slag powder on performance of asphalt and asphalt mixture
| British Library Online Contents | 2018