Semi-Flexible Pavement: A Review of Design and Performance Evaluation
It is known to researchers in the field of road construction and development. Three types of pavement are rigid, flexible, and composite paving. The composite pavement consists of a layer of flexible pavement on top of which a layer of rigid pavement is placed or vice versa. All of these types have...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | E3S Web of Conferences |
| Subjects: | |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/64/e3sconf_icgee2023_03001.pdf |
| _version_ | 1797673538658762752 |
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| author | Abdulsahib Iftikhar Hilal Miami M. Fattah Mohammed Y. |
| author_facet | Abdulsahib Iftikhar Hilal Miami M. Fattah Mohammed Y. |
| author_sort | Abdulsahib Iftikhar |
| collection | DOAJ |
| description | It is known to researchers in the field of road construction and development. Three types of pavement are rigid, flexible, and composite paving. The composite pavement consists of a layer of flexible pavement on top of which a layer of rigid pavement is placed or vice versa. All of these types have advantages in addition to disadvantages that affect road performance on the one hand and user convenience on the other. About 50 years ago, work began establishing a type of pavement characterized by its semi-flexible performance, which combines rigid pavement's rigidity and flexible pavement's flexibility. It is called semi-flexible pavement and grouted macadam in some sources. It consists mainly of an open-graded asphalt mixture in which the percentage of air voids ranges from (25 to 35%), and in some sources, it is mentioned that it ranges between (20 to 28%) grouted with a high-performance cementitious material. Work began on this type of pavement in the sixties of the last century. However, there is no approved specification for its design, as its design methods differ according to the researcher's vision. This scientific paper aims to facilitate the way for new researchers in this field by knowing the basic stages of semi-flexible pavement design and presenting the existing design methods and what is required for laboratory tests to evaluate the performance of the completed pavement design. It was found that the performance of semi-flexible paving depends mainly on the bonding between its components, as it is considered a composite material. For this reason, the direction in the future may be to study the bonding between asphalt and cement, in particular, as they are two basic materials in their composition. |
| first_indexed | 2024-03-11T21:46:57Z |
| format | Article |
| id | doaj.art-bb9a3aa1d04645448e7d9a445d1e514f |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-11T21:46:57Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-bb9a3aa1d04645448e7d9a445d1e514f2023-09-26T10:12:02ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014270300110.1051/e3sconf/202342703001e3sconf_icgee2023_03001Semi-Flexible Pavement: A Review of Design and Performance EvaluationAbdulsahib Iftikhar0Hilal Miami M.1Fattah Mohammed Y.2Department of Civil Engineering, University of Technology-IraqDepartment of Civil Engineering, University of Technology-IraqDepartment of Civil Engineering, University of Technology-IraqIt is known to researchers in the field of road construction and development. Three types of pavement are rigid, flexible, and composite paving. The composite pavement consists of a layer of flexible pavement on top of which a layer of rigid pavement is placed or vice versa. All of these types have advantages in addition to disadvantages that affect road performance on the one hand and user convenience on the other. About 50 years ago, work began establishing a type of pavement characterized by its semi-flexible performance, which combines rigid pavement's rigidity and flexible pavement's flexibility. It is called semi-flexible pavement and grouted macadam in some sources. It consists mainly of an open-graded asphalt mixture in which the percentage of air voids ranges from (25 to 35%), and in some sources, it is mentioned that it ranges between (20 to 28%) grouted with a high-performance cementitious material. Work began on this type of pavement in the sixties of the last century. However, there is no approved specification for its design, as its design methods differ according to the researcher's vision. This scientific paper aims to facilitate the way for new researchers in this field by knowing the basic stages of semi-flexible pavement design and presenting the existing design methods and what is required for laboratory tests to evaluate the performance of the completed pavement design. It was found that the performance of semi-flexible paving depends mainly on the bonding between its components, as it is considered a composite material. For this reason, the direction in the future may be to study the bonding between asphalt and cement, in particular, as they are two basic materials in their composition.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/64/e3sconf_icgee2023_03001.pdfsemi-flexible pavementreviewperformanceevaluation |
| spellingShingle | Abdulsahib Iftikhar Hilal Miami M. Fattah Mohammed Y. Semi-Flexible Pavement: A Review of Design and Performance Evaluation E3S Web of Conferences semi-flexible pavement review performance evaluation |
| title | Semi-Flexible Pavement: A Review of Design and Performance Evaluation |
| title_full | Semi-Flexible Pavement: A Review of Design and Performance Evaluation |
| title_fullStr | Semi-Flexible Pavement: A Review of Design and Performance Evaluation |
| title_full_unstemmed | Semi-Flexible Pavement: A Review of Design and Performance Evaluation |
| title_short | Semi-Flexible Pavement: A Review of Design and Performance Evaluation |
| title_sort | semi flexible pavement a review of design and performance evaluation |
| topic | semi-flexible pavement review performance evaluation |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/64/e3sconf_icgee2023_03001.pdf |
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