A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC)
Crack spacing is an important property governing the tensile strain capacity of strain-hardening cementitious composites (SHCC). This paper presents a generic model to determine the crack spacing of short and randomly oriented polymeric fiber-reinforced SHCCs, which takes into account of the fiber/m...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160671 |
| _version_ | 1811697354027302912 |
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| author | Li, Junxia Weng, Jian Chen, Zhitao Yang, En-Hua |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Junxia Weng, Jian Chen, Zhitao Yang, En-Hua |
| author_sort | Li, Junxia |
| collection | NTU |
| description | Crack spacing is an important property governing the tensile strain capacity of strain-hardening cementitious composites (SHCC). This paper presents a generic model to determine the crack spacing of short and randomly oriented polymeric fiber-reinforced SHCCs, which takes into account of the fiber/matrix interface chemical bond, the fiber/matrix interface slip-hardening behavior, and two-way fiber pullout. The validity of the proposed model is assessed by comparing the crack spacing calculated from the present model with that observed from the direct tensile test. Increased chemical bond leads to reduced crack spacing at small crack opening due to increased fiber pullout force during fiber debonding. At large crack opening, however, increased chemical bond can lead to increased crack spacing due to premature fiber rupture. Furthermore, increased slip-hardening coefficient results in reduced crack spacing due to increased fiber pullout force during fiber slippage. Variation of the slip-hardening coefficient leads to more significant change of the crack spacing than that of the chemical bond. The proposed generic model can be used to determine the crack spacing of SHCC, and also to guide the design of SHCC with targeted multiple cracking pattern. |
| first_indexed | 2024-10-01T07:53:55Z |
| format | Journal Article |
| id | ntu-10356/160671 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:53:55Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1606712022-07-29T08:14:02Z A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) Li, Junxia Weng, Jian Chen, Zhitao Yang, En-Hua School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) Building and Construction Authority Academy Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering::Civil engineering Crack Spacing Chemical Bond Crack spacing is an important property governing the tensile strain capacity of strain-hardening cementitious composites (SHCC). This paper presents a generic model to determine the crack spacing of short and randomly oriented polymeric fiber-reinforced SHCCs, which takes into account of the fiber/matrix interface chemical bond, the fiber/matrix interface slip-hardening behavior, and two-way fiber pullout. The validity of the proposed model is assessed by comparing the crack spacing calculated from the present model with that observed from the direct tensile test. Increased chemical bond leads to reduced crack spacing at small crack opening due to increased fiber pullout force during fiber debonding. At large crack opening, however, increased chemical bond can lead to increased crack spacing due to premature fiber rupture. Furthermore, increased slip-hardening coefficient results in reduced crack spacing due to increased fiber pullout force during fiber slippage. Variation of the slip-hardening coefficient leads to more significant change of the crack spacing than that of the chemical bond. The proposed generic model can be used to determine the crack spacing of SHCC, and also to guide the design of SHCC with targeted multiple cracking pattern. National Research Foundation (NRF) This research grant is supported by the Singapore National Research Foundation under its Environmental & Water Technologies Strategic Research Programme and administered by the Environment & Water Industry Programme Office (EWI) of the PUB. 2022-07-29T08:14:01Z 2022-07-29T08:14:01Z 2021 Journal Article Li, J., Weng, J., Chen, Z. & Yang, E. (2021). A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC). Cement and Concrete Composites, 118, 103919-. https://dx.doi.org/10.1016/j.cemconcomp.2020.103919 0958-9465 https://hdl.handle.net/10356/160671 10.1016/j.cemconcomp.2020.103919 2-s2.0-85099287752 118 103919 en Cement and Concrete Composites © 2021 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Crack Spacing Chemical Bond Li, Junxia Weng, Jian Chen, Zhitao Yang, En-Hua A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) |
| title | A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) |
| title_full | A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) |
| title_fullStr | A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) |
| title_full_unstemmed | A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) |
| title_short | A generic model to determine crack spacing of short and randomly oriented polymeric fiber-reinforced strain-hardening cementitious composites (SHCC) |
| title_sort | generic model to determine crack spacing of short and randomly oriented polymeric fiber reinforced strain hardening cementitious composites shcc |
| topic | Engineering::Civil engineering Crack Spacing Chemical Bond |
| url | https://hdl.handle.net/10356/160671 |
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