Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials
Semiflexible mixture is a composite paving material combining the advantages of both asphalt and cement concrete materials. It consists of matrix asphalt skeleton and cement mortar. Due to the different volume characters between asphalt structure and cement mortar, stress concentration always happen...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/8252347 |
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| author | Duanyi Wang Xiayi Liang Danning Li Hehao Liang Huayang Yu |
| author_facet | Duanyi Wang Xiayi Liang Danning Li Hehao Liang Huayang Yu |
| author_sort | Duanyi Wang |
| collection | DOAJ |
| description | Semiflexible mixture is a composite paving material combining the advantages of both asphalt and cement concrete materials. It consists of matrix asphalt skeleton and cement mortar. Due to the different volume characters between asphalt structure and cement mortar, stress concentration always happens in this semiflexible mixture, leading to internal cracking. The objective of this study is to alleviate the internal cracking concern of the semiflexible mixture by adjusting the material components. To this end, optimal material design and numerical simulation have been conducted. Matrix asphalt structures with four different air voids were incorporated with different dosages of cement mortar. The contraction strain and expansion strain of cement mortar as well as the indirect tensile strength of matrix asphalt structure were measured. The results were input into ABAQUS for numerical simulation. The results indicated that (1) the internal stress in this semiflexible mixture is mainly determined by the contraction of cement mortar, rather than expansion; (2) larger air void of matrix asphalt structure and less volumetric variation of cement mortar reduce the internal stress; (3) once the air void of matrix asphalt structure is decided, both maximum contraction and expansion deformations of cement mortar should meet specific requirement to ensure less internal cracking. This is a practical-ready paper that provides reference for the anticracking design of semiflexible pavement. |
| format | Article |
| id | doaj-art-8ee6e7b3e7fe47578364d7802e359bf2 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-8ee6e7b3e7fe47578364d7802e359bf22025-02-03T05:45:09ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/82523478252347Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement MaterialsDuanyi Wang0Xiayi Liang1Danning Li2Hehao Liang3Huayang Yu4School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, ChinaSemiflexible mixture is a composite paving material combining the advantages of both asphalt and cement concrete materials. It consists of matrix asphalt skeleton and cement mortar. Due to the different volume characters between asphalt structure and cement mortar, stress concentration always happens in this semiflexible mixture, leading to internal cracking. The objective of this study is to alleviate the internal cracking concern of the semiflexible mixture by adjusting the material components. To this end, optimal material design and numerical simulation have been conducted. Matrix asphalt structures with four different air voids were incorporated with different dosages of cement mortar. The contraction strain and expansion strain of cement mortar as well as the indirect tensile strength of matrix asphalt structure were measured. The results were input into ABAQUS for numerical simulation. The results indicated that (1) the internal stress in this semiflexible mixture is mainly determined by the contraction of cement mortar, rather than expansion; (2) larger air void of matrix asphalt structure and less volumetric variation of cement mortar reduce the internal stress; (3) once the air void of matrix asphalt structure is decided, both maximum contraction and expansion deformations of cement mortar should meet specific requirement to ensure less internal cracking. This is a practical-ready paper that provides reference for the anticracking design of semiflexible pavement.http://dx.doi.org/10.1155/2018/8252347 |
| spellingShingle | Duanyi Wang Xiayi Liang Danning Li Hehao Liang Huayang Yu Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials Advances in Materials Science and Engineering |
| title | Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials |
| title_full | Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials |
| title_fullStr | Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials |
| title_full_unstemmed | Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials |
| title_short | Study on Mechanics-Based Cracking Resistance of Semiflexible Pavement Materials |
| title_sort | study on mechanics based cracking resistance of semiflexible pavement materials |
| url | http://dx.doi.org/10.1155/2018/8252347 |
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