Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability
Cement asphalt emulsion mixture (CAEM) presents low early-age strength and poor flowability, which limits its application range at a certain degree. In this paper, CAEM with high early-age strength and flowability was proposed. The flowability, compressive strength, flexural strength of CAEM at diff...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-05-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmats.2020.00122/full |
| _version_ | 1819098709313454080 |
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| author | Yaogang Tian Yaogang Tian Xiaohui Yan Dong Lu Zhenjun Wang Jun Zhang Ouming Xu Weiguang Li |
| author_facet | Yaogang Tian Yaogang Tian Xiaohui Yan Dong Lu Zhenjun Wang Jun Zhang Ouming Xu Weiguang Li |
| author_sort | Yaogang Tian |
| collection | DOAJ |
| description | Cement asphalt emulsion mixture (CAEM) presents low early-age strength and poor flowability, which limits its application range at a certain degree. In this paper, CAEM with high early-age strength and flowability was proposed. The flowability, compressive strength, flexural strength of CAEM at different periods and 28 days elastic modulus of CAEM were investigated. In addition, evolution of composition and microstructure of CAEM was analyzed by X-ray diffraction (XRD), scanning electronic microscope (SEM), and mercury intrusion porosimetry (MIP). The results indicated that the compressive strength of CAEM can be enhanced quickly in several hours. It could achieve 17–24 MPa at 6 h and almost reached 79–90% of the 28 days compressive strength. SEM and XRD analysis found that the hydration products in CAEM at different periods were obviously different. The hydration products of 2 h filled the micro pores of the mixture. After 28 days, the hydration products were connected to each other, resulting in a denser structure. The results of MIP analysis showed that the pore cumulative volume of CAEM was similar for 2 h and 28 days samples. These results testified that CAEM had high early-age strength. |
| first_indexed | 2024-12-22T00:35:18Z |
| format | Article |
| id | doaj.art-8488c68a194c4d249aaec7fbad9d7369 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-12-22T00:35:18Z |
| publishDate | 2020-05-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Materials |
| spelling | doaj.art-8488c68a194c4d249aaec7fbad9d73692022-12-21T18:44:49ZengFrontiers Media S.A.Frontiers in Materials2296-80162020-05-01710.3389/fmats.2020.00122534582Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and FlowabilityYaogang Tian0Yaogang Tian1Xiaohui Yan2Dong Lu3Zhenjun Wang4Jun Zhang5Ouming Xu6Weiguang Li7School of Materials Science and Engineering, Chang’an University, Xi’an, ChinaEngineering Research Center of Transportation Materials, Ministry of Education, Chang’an University, Xi’an, ChinaSchool of Materials Science and Engineering, Chang’an University, Xi’an, ChinaSchool of Materials Science and Engineering, Chang’an University, Xi’an, ChinaSchool of Materials Science and Engineering, Chang’an University, Xi’an, ChinaSchool of Construction Machinery, Chang’an University, Xi’an, ChinaSchool of Materials Science and Engineering, Chang’an University, Xi’an, ChinaSchool of Highway, Chang’an University, Xi’an, ChinaCement asphalt emulsion mixture (CAEM) presents low early-age strength and poor flowability, which limits its application range at a certain degree. In this paper, CAEM with high early-age strength and flowability was proposed. The flowability, compressive strength, flexural strength of CAEM at different periods and 28 days elastic modulus of CAEM were investigated. In addition, evolution of composition and microstructure of CAEM was analyzed by X-ray diffraction (XRD), scanning electronic microscope (SEM), and mercury intrusion porosimetry (MIP). The results indicated that the compressive strength of CAEM can be enhanced quickly in several hours. It could achieve 17–24 MPa at 6 h and almost reached 79–90% of the 28 days compressive strength. SEM and XRD analysis found that the hydration products in CAEM at different periods were obviously different. The hydration products of 2 h filled the micro pores of the mixture. After 28 days, the hydration products were connected to each other, resulting in a denser structure. The results of MIP analysis showed that the pore cumulative volume of CAEM was similar for 2 h and 28 days samples. These results testified that CAEM had high early-age strength.https://www.frontiersin.org/article/10.3389/fmats.2020.00122/fullcement asphalt emulsion mixturehigh early-age strengthhigh flowabilitymechanismmicrostructure characteruizations |
| spellingShingle | Yaogang Tian Yaogang Tian Xiaohui Yan Dong Lu Zhenjun Wang Jun Zhang Ouming Xu Weiguang Li Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability Frontiers in Materials cement asphalt emulsion mixture high early-age strength high flowability mechanism microstructure characteruizations |
| title | Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability |
| title_full | Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability |
| title_fullStr | Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability |
| title_full_unstemmed | Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability |
| title_short | Characteristics of the Cement Asphalt Emulsion Mixture With Early-Age Strength and Flowability |
| title_sort | characteristics of the cement asphalt emulsion mixture with early age strength and flowability |
| topic | cement asphalt emulsion mixture high early-age strength high flowability mechanism microstructure characteruizations |
| url | https://www.frontiersin.org/article/10.3389/fmats.2020.00122/full |
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