Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture
This study focuses on improving the performance of asphalt mixture at low- and high- temperature and analyzing the effect of diatomite and basalt fiber on the performance of the asphalt mixture. Based on the L<sub>16</sub>(4<sup>5</sup>) orthogonal experimental design (OED),...
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doaj-41958f18011d4e78aac010836f0c8aa12020-11-25T00:52:58ZengMDPI AGMaterials1996-19442019-05-01129146110.3390/ma12091461ma12091461Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt MixtureYongchun Cheng0Liding Li1Peilei Zhou2Yuwei Zhang3Hanbing Liu4College of Transportation, Jilin University, Changchun 130025, ChinaCollege of Transportation, Jilin University, Changchun 130025, ChinaCollege of Transportation, Jilin University, Changchun 130025, ChinaCollege of Transportation, Jilin University, Changchun 130025, ChinaCollege of Transportation, Jilin University, Changchun 130025, ChinaThis study focuses on improving the performance of asphalt mixture at low- and high- temperature and analyzing the effect of diatomite and basalt fiber on the performance of the asphalt mixture. Based on the L<sub>16</sub>(4<sup>5</sup>) orthogonal experimental design (OED), the content of diatomite (D) and basalt fiber (B) and the asphalt-aggregate (A) ratio were selected as contributing factors, and each contributing factor corresponded to four levels. Bulk volume density (γ<sub>f</sub>), volume of air voids (VV), voids filled with asphalt (VFA), Marshall stability (MS) and splitting strength at −10 °C (S<sub>b</sub>) were taken as the evaluation indexes. According to the results of the orthogonal experiment, the range analysis and variance analysis were used to study the effect of the diatomite content, basalt fiber content and asphalt-aggregate ratio on the performance of the asphalt mixture, and the grey correlation grade analysis (GCGA) was used to obtain the optimal mixing scheme. Furthermore, the performance tests were conducted to evaluate the performance improvement of asphalt mixtures with diatomite and basalt fibers, and the scanning electron microscopy (SEM) tests were carried out to analyze the mechanism of diatomite and basalt fibers in asphalt mixtures. The results revealed that the addition of diatomite and basalt fiber can significantly increase the VV of asphalt mixture, and reduce γ<sub>f</sub> and VFA; the optimal performance of the asphalt mixture at high- and low-temperature are achieved with 14% diatomite, 0.32% basalt fibers and 5.45% asphalt-aggregate ratio. Moreover, the porous structure of diatomite and the overlapping network of basalt fibers are the main reasons for improving the performance of asphalt mixture.https://www.mdpi.com/1996-1944/12/9/1461asphalt mixtureorthogonal experimental designgrey correlation grade analysisdiatomitebasalt fiberpavement performancescanning electron microscope |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yongchun Cheng Liding Li Peilei Zhou Yuwei Zhang Hanbing Liu |
spellingShingle |
Yongchun Cheng Liding Li Peilei Zhou Yuwei Zhang Hanbing Liu Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture Materials asphalt mixture orthogonal experimental design grey correlation grade analysis diatomite basalt fiber pavement performance scanning electron microscope |
author_facet |
Yongchun Cheng Liding Li Peilei Zhou Yuwei Zhang Hanbing Liu |
author_sort |
Yongchun Cheng |
title |
Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture |
title_short |
Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture |
title_full |
Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture |
title_fullStr |
Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture |
title_full_unstemmed |
Multi-Objective Optimization Design and Test of Compound Diatomite and Basalt Fiber Asphalt Mixture |
title_sort |
multi-objective optimization design and test of compound diatomite and basalt fiber asphalt mixture |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2019-05-01 |
description |
This study focuses on improving the performance of asphalt mixture at low- and high- temperature and analyzing the effect of diatomite and basalt fiber on the performance of the asphalt mixture. Based on the L<sub>16</sub>(4<sup>5</sup>) orthogonal experimental design (OED), the content of diatomite (D) and basalt fiber (B) and the asphalt-aggregate (A) ratio were selected as contributing factors, and each contributing factor corresponded to four levels. Bulk volume density (γ<sub>f</sub>), volume of air voids (VV), voids filled with asphalt (VFA), Marshall stability (MS) and splitting strength at −10 °C (S<sub>b</sub>) were taken as the evaluation indexes. According to the results of the orthogonal experiment, the range analysis and variance analysis were used to study the effect of the diatomite content, basalt fiber content and asphalt-aggregate ratio on the performance of the asphalt mixture, and the grey correlation grade analysis (GCGA) was used to obtain the optimal mixing scheme. Furthermore, the performance tests were conducted to evaluate the performance improvement of asphalt mixtures with diatomite and basalt fibers, and the scanning electron microscopy (SEM) tests were carried out to analyze the mechanism of diatomite and basalt fibers in asphalt mixtures. The results revealed that the addition of diatomite and basalt fiber can significantly increase the VV of asphalt mixture, and reduce γ<sub>f</sub> and VFA; the optimal performance of the asphalt mixture at high- and low-temperature are achieved with 14% diatomite, 0.32% basalt fibers and 5.45% asphalt-aggregate ratio. Moreover, the porous structure of diatomite and the overlapping network of basalt fibers are the main reasons for improving the performance of asphalt mixture. |
topic |
asphalt mixture orthogonal experimental design grey correlation grade analysis diatomite basalt fiber pavement performance scanning electron microscope |
url |
https://www.mdpi.com/1996-1944/12/9/1461 |
work_keys_str_mv |
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