contributor author | Xiaoming Liu | |
contributor author | Ziqi Wei | |
contributor author | Yu Zhao | |
contributor author | Daxiong Yan | |
date accessioned | 2022-02-01T22:06:02Z | |
date available | 2022-02-01T22:06:02Z | |
date issued | 11/1/2021 | |
identifier other | %28ASCE%29MT.1943-5533.0003953.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4272614 | |
description abstract | It is important to further improve the microwave absorption capacity of bitumen to promote the application of microwave heating in pavement maintenance. SiC-Fe3O4 composites were prepared as microwave-enhanced materials based on the impedance matching theory and the limitation of traditional single-phase microwave absorber. A network analyzer was used to measure the electromagnetic parameters. The rheological properties were evaluated and the morphological characteristics of SiC-Fe3O4 composites were studied. The process of microwave-heating of bituminous concrete was simulated and the heating rate and heat distribution were analyzed intensively. The results showed that the reflection loss of bitumen containing SiC-Fe3O4 composites reached −21.82 dB (the microwave reflectivity was only 1%), which is 13.4 dB lower than that of the bitumen containing SiC. The average heating rate of the bituminous concrete containing optimum SiC-Fe3O4 composites was 0.322°C/s, which is 1.88 times of that of pure bituminous concrete, and higher than that of bituminous concrete containing either SiC or Fe3O4. SiC-Fe3O4 composites improved the thermal conductivity of bituminous concrete, as well. The rheological properties of bitumen did not decline. The microstructure of SiC-Fe3O4 composites contributed to microwave absorption. It can be concluded that the bitumen containing SiC-Fe3O4 composites has stronger microwave-absorption ability compared with the bitumen containing a single-phase absorber. The bituminous concrete with composites had a greater microwave heating effect, and the optimum mass ratio of SiC to Fe3O4 was 1∶2. | |
publisher | ASCE | |
title | Improving the Electromagnetic Properties of Bitumen Using SiC-Fe3O4 Composites | |
type | Journal Paper | |
journal volume | 33 | |
journal issue | 11 | |
journal title | Journal of Materials in Civil Engineering | |
identifier doi | 10.1061/(ASCE)MT.1943-5533.0003953 | |
journal fristpage | 04021326-1 | |
journal lastpage | 04021326-10 | |
page | 10 | |
tree | Journal of Materials in Civil Engineering:;2021:;Volume ( 033 ):;issue: 011 | |
contenttype | Fulltext | |