Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation
Whitetopping is the concrete overlay used to upgrade distressed asphalt road surface, where the distressed asphalt is milled off and concrete is cast on top as the new wearing course. However, it requires road closure for multiple days, which is not accepted in many urban constructions. Precast conc...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180322 |
| _version_ | 1824454593230143488 |
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| author | NguyenDinh, Nen Liu, Yangqing Qiu, Jishen Bawono, Ali Aryo He, Shan Lechner, Bernhard Yang, En-Hua |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering NguyenDinh, Nen Liu, Yangqing Qiu, Jishen Bawono, Ali Aryo He, Shan Lechner, Bernhard Yang, En-Hua |
| author_sort | NguyenDinh, Nen |
| collection | NTU |
| description | Whitetopping is the concrete overlay used to upgrade distressed asphalt road surface, where the distressed asphalt is milled off and concrete is cast on top as the new wearing course. However, it requires road closure for multiple days, which is not accepted in many urban constructions. Precast concrete pavement (PCP) is the technology that shortens the construction period. However, it is associated with complicated construction procedures due to the brittleness of conventional concrete. In this paper, a brand-new PCP design, i.e., ultra-thin whitetopping (PUTW) is studied and applied in a demonstration project in Singapore. The PUTW is enabled by employing strain-hardening cementitious composites (SHCC) with significantly higher ductility than conventional concrete. The current work includes four parts. First, the desirable combinations of SHCC's tensile and compressive uniaxial behaviors are identified in the analytical model and experimental study to enhance its flexural strength for pavement application. Second, the slab-to-slab joint efficiency in the PUTW, the critical mechanism in the structural design, is examined and validated with a full-scale cyclic wheel test. Third, the structural performance of the entire SHCC-PUTW is examined in a new finite element (FE) model validated against the wheel test. Based on the FE model, parametric studies on the SHCC material properties and PUTW slab dimensions are conducted to optimize the structural design. Fourth, a small-scale field project on the Jurong Island of Singapore, which involves the fabrication and installation of 11 SHCC-PUTW slabs, is reported to assess the feasibility of this new structural design. |
| first_indexed | 2025-02-19T03:24:46Z |
| format | Journal Article |
| id | ntu-10356/180322 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:24:46Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1803222024-10-01T06:33:51Z Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation NguyenDinh, Nen Liu, Yangqing Qiu, Jishen Bawono, Ali Aryo He, Shan Lechner, Bernhard Yang, En-Hua School of Civil and Environmental Engineering TUMCREATE, Singapore Engineering Precast concrete pavement Cyclic wheel test Whitetopping is the concrete overlay used to upgrade distressed asphalt road surface, where the distressed asphalt is milled off and concrete is cast on top as the new wearing course. However, it requires road closure for multiple days, which is not accepted in many urban constructions. Precast concrete pavement (PCP) is the technology that shortens the construction period. However, it is associated with complicated construction procedures due to the brittleness of conventional concrete. In this paper, a brand-new PCP design, i.e., ultra-thin whitetopping (PUTW) is studied and applied in a demonstration project in Singapore. The PUTW is enabled by employing strain-hardening cementitious composites (SHCC) with significantly higher ductility than conventional concrete. The current work includes four parts. First, the desirable combinations of SHCC's tensile and compressive uniaxial behaviors are identified in the analytical model and experimental study to enhance its flexural strength for pavement application. Second, the slab-to-slab joint efficiency in the PUTW, the critical mechanism in the structural design, is examined and validated with a full-scale cyclic wheel test. Third, the structural performance of the entire SHCC-PUTW is examined in a new finite element (FE) model validated against the wheel test. Based on the FE model, parametric studies on the SHCC material properties and PUTW slab dimensions are conducted to optimize the structural design. Fourth, a small-scale field project on the Jurong Island of Singapore, which involves the fabrication and installation of 11 SHCC-PUTW slabs, is reported to assess the feasibility of this new structural design. The authors would like to acknowledge the financial supports from JTC (RCA-16/149) and the Singapore National Research Foundation under its Campus for Research Excellence And Technological Enterprise (CREATE) program. The author at SHU would like to acknowledge the financial support by the Science and Technology Commission of Shanghai Municipality (21PJ1403800) and the National Natural Science Foundation of China (52308180). 2024-10-01T06:33:51Z 2024-10-01T06:33:51Z 2024 Journal Article NguyenDinh, N., Liu, Y., Qiu, J., Bawono, A. A., He, S., Lechner, B. & Yang, E. (2024). Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation. Construction and Building Materials, 412, 134252-. https://dx.doi.org/10.1016/j.conbuildmat.2023.134252 0950-0618 https://hdl.handle.net/10356/180322 10.1016/j.conbuildmat.2023.134252 2-s2.0-85181875701 412 134252 en RCA-16/149 CREATE Construction and Building Materials © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Precast concrete pavement Cyclic wheel test NguyenDinh, Nen Liu, Yangqing Qiu, Jishen Bawono, Ali Aryo He, Shan Lechner, Bernhard Yang, En-Hua Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation |
| title | Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation |
| title_full | Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation |
| title_fullStr | Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation |
| title_full_unstemmed | Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation |
| title_short | Strain-hardening cementitious composites ultra-thin whitetopping (SHCC-PUTW) for rapid asphalt pavement rehabilitation |
| title_sort | strain hardening cementitious composites ultra thin whitetopping shcc putw for rapid asphalt pavement rehabilitation |
| topic | Engineering Precast concrete pavement Cyclic wheel test |
| url | https://hdl.handle.net/10356/180322 |
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