Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC)
While incorporation of river sands improves the volume stability and lowers the cost of ECC, distinct multiple cracking and tensile strain-hardening behavior of the resulting river sand ECC (RS-ECC) with different strength grade were observed. This paper investigates the effects of river sand inclus...
| 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/10356/162090 |
| _version_ | 1826123374682701824 |
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| author | Li, Yazhao Li, Junxia Yang, En-Hua Guan, Xinchun |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Yazhao Li, Junxia Yang, En-Hua Guan, Xinchun |
| author_sort | Li, Yazhao |
| collection | NTU |
| description | While incorporation of river sands improves the volume stability and lowers the cost of ECC, distinct multiple cracking and tensile strain-hardening behavior of the resulting river sand ECC (RS-ECC) with different strength grade were observed. This paper investigates the effects of river sand inclusion on crack propagation in RS-ECC. It concludes that crack deflection at RS/matrix interface prevails in the normal strength RS-ECC while crack penetration through RS dominates in the high strength RS-ECC. As a result, crack path in the normal strength RS-ECC is more tortuous which increases matrix fracture toughness and lead to less saturated multiple cracking and reduced tensile strain capacity. Crack branching can occur when the crack propagates through the RS in the high strength mix, resulting in more saturated multiple cracking in the high strength RS-ECC with improved tensile strain capacity. |
| first_indexed | 2024-10-01T06:03:38Z |
| format | Journal Article |
| id | ntu-10356/162090 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:03:38Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1620902022-10-04T02:58:53Z Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) Li, Yazhao Li, Junxia Yang, En-Hua Guan, Xinchun School of Civil and Environmental Engineering Institute of Materials Research and Engineering, A*STAR Engineering::Civil engineering Engineered Cementitious Composites Crack Propagation While incorporation of river sands improves the volume stability and lowers the cost of ECC, distinct multiple cracking and tensile strain-hardening behavior of the resulting river sand ECC (RS-ECC) with different strength grade were observed. This paper investigates the effects of river sand inclusion on crack propagation in RS-ECC. It concludes that crack deflection at RS/matrix interface prevails in the normal strength RS-ECC while crack penetration through RS dominates in the high strength RS-ECC. As a result, crack path in the normal strength RS-ECC is more tortuous which increases matrix fracture toughness and lead to less saturated multiple cracking and reduced tensile strain capacity. Crack branching can occur when the crack propagates through the RS in the high strength mix, resulting in more saturated multiple cracking in the high strength RS-ECC with improved tensile strain capacity. Ministry of Education (MOE) The authors acknowledge the financial support from the Ministry of Education, Singapore (NGF-2020-08-013), the National Key Research and Development Program of China (2018YFC0705404), the National Natural Science Foundation of China (52078171), and China Scholarship Council (201906120300). 2022-10-04T02:58:52Z 2022-10-04T02:58:52Z 2022 Journal Article Li, Y., Li, J., Yang, E. & Guan, X. (2022). Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC). Cement and Concrete Composites, 128, 104434-. https://dx.doi.org/10.1016/j.cemconcomp.2022.104434 0958-9465 https://hdl.handle.net/10356/162090 10.1016/j.cemconcomp.2022.104434 2-s2.0-85124191697 128 104434 en NGF-2020-08-013 Cement and Concrete Composites © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Engineered Cementitious Composites Crack Propagation Li, Yazhao Li, Junxia Yang, En-Hua Guan, Xinchun Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) |
| title | Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) |
| title_full | Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) |
| title_fullStr | Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) |
| title_full_unstemmed | Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) |
| title_short | Mechanism study of crack propagation in river sand Engineered Cementitious Composites (ECC) |
| title_sort | mechanism study of crack propagation in river sand engineered cementitious composites ecc |
| topic | Engineering::Civil engineering Engineered Cementitious Composites Crack Propagation |
| url | https://hdl.handle.net/10356/162090 |
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