Development of bendable concrete with locally available ingredients
Engineered Cementitious Composites (ECCs) are a type of high ductility concrete enhanced with fibers, which allows for strain-hardening behaviour and higher strain capacities than traditional concrete. Supplementary cementitious materials (SCMs) used in ECC include fly ash and ground granulated blas...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/158542 |
| _version_ | 1811683234113650688 |
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| author | Tan, Hao Ming |
| author2 | En-Hua Yang |
| author_facet | En-Hua Yang Tan, Hao Ming |
| author_sort | Tan, Hao Ming |
| collection | NTU |
| description | Engineered Cementitious Composites (ECCs) are a type of high ductility concrete enhanced with fibers, which allows for strain-hardening behaviour and higher strain capacities than traditional concrete. Supplementary cementitious materials (SCMs) used in ECC include fly ash and ground granulated blast-furnace slag (GGBS). While fly ash have been shown to improve the mechanical properties of ECC, its substitution ratio of cement is limited. Comparatively, slag is able to substitute more of cement, allowing for higher cost savings. However, research into how incorporating slag will affect the mechanical properties of high strength ECC is limited. Hence, this study was carried out to develop high strength ECC with consistent mechanical performance using slag. Compressive and direct tensile tests were conducted on both fly ash and slag ECCs reinforced with polyethylene (PE) fibers. Two different water-to-binder (W/B) ratios of 0.16 and 0.20 were used. It was found that for a substitution ratio of 30% and a curing temperature of 60ºC, at both W/B ratios, slag-river sand ECC had higher ultimate tensile strength and tensile strain capacity than fly ash-river sand ECC. Also, increasing the slag substitution amounts from 30% to 40% resulted in an increase in ultimate tensile strength, but a decrease in ductility of slag ECC. High strength slag-laboratory sand ECC with compressive strengths greater than 120MPa were also achieved. |
| first_indexed | 2024-10-01T04:09:29Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/158542 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:09:29Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1585422022-06-08T00:38:10Z Development of bendable concrete with locally available ingredients Tan, Hao Ming En-Hua Yang School of Civil and Environmental Engineering EHYANG@ntu.edu.sg Engineering::Materials::Composite materials Engineered Cementitious Composites (ECCs) are a type of high ductility concrete enhanced with fibers, which allows for strain-hardening behaviour and higher strain capacities than traditional concrete. Supplementary cementitious materials (SCMs) used in ECC include fly ash and ground granulated blast-furnace slag (GGBS). While fly ash have been shown to improve the mechanical properties of ECC, its substitution ratio of cement is limited. Comparatively, slag is able to substitute more of cement, allowing for higher cost savings. However, research into how incorporating slag will affect the mechanical properties of high strength ECC is limited. Hence, this study was carried out to develop high strength ECC with consistent mechanical performance using slag. Compressive and direct tensile tests were conducted on both fly ash and slag ECCs reinforced with polyethylene (PE) fibers. Two different water-to-binder (W/B) ratios of 0.16 and 0.20 were used. It was found that for a substitution ratio of 30% and a curing temperature of 60ºC, at both W/B ratios, slag-river sand ECC had higher ultimate tensile strength and tensile strain capacity than fly ash-river sand ECC. Also, increasing the slag substitution amounts from 30% to 40% resulted in an increase in ultimate tensile strength, but a decrease in ductility of slag ECC. High strength slag-laboratory sand ECC with compressive strengths greater than 120MPa were also achieved. Bachelor of Engineering (Civil) 2022-06-07T07:17:47Z 2022-06-07T07:17:47Z 2022 Final Year Project (FYP) Tan, H. M. (2022). Development of bendable concrete with locally available ingredients. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158542 https://hdl.handle.net/10356/158542 en EM-12 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials::Composite materials Tan, Hao Ming Development of bendable concrete with locally available ingredients |
| title | Development of bendable concrete with locally available ingredients |
| title_full | Development of bendable concrete with locally available ingredients |
| title_fullStr | Development of bendable concrete with locally available ingredients |
| title_full_unstemmed | Development of bendable concrete with locally available ingredients |
| title_short | Development of bendable concrete with locally available ingredients |
| title_sort | development of bendable concrete with locally available ingredients |
| topic | Engineering::Materials::Composite materials |
| url | https://hdl.handle.net/10356/158542 |
| work_keys_str_mv | AT tanhaoming developmentofbendableconcretewithlocallyavailableingredients |