Dynamic resistance capacity of GPC slab under pendulum impact loading
Geopolymer concrete (GPC) as a green construction material has the potential to substitute traditional concrete, but there is a lack of understanding of the performances of geopolymer concrete structures subjected to dynamic loadings. This study investigates the dynamic responses of reinforced concr...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2023
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| Online Access: | http://hdl.handle.net/20.500.11937/91728 |
| _version_ | 1848765580390170624 |
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| author | Chen, Chong Zhang, Xihong Hao, Hong |
| author_facet | Chen, Chong Zhang, Xihong Hao, Hong |
| author_sort | Chen, Chong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Geopolymer concrete (GPC) as a green construction material has the potential to substitute traditional concrete, but there is a lack of understanding of the performances of geopolymer concrete structures subjected to dynamic loadings. This study investigates the dynamic responses of reinforced concrete slabs made of ambient cured alkali-activated GPC under static and dynamic concentrated load. Laboratory tests are performed which revealed that GPC slabs exhibited typical punching shear failure model under both static and impact load. Current design codes including ACI, Eurocode 2 and CSCT model can well predict the static punching resistance capacity of GPC slab, but fail to predict the dynamic punching resistance. Numerical modelling is carried out to investigate the dynamic punching shear mechanism. The results indicate that the impact response of GPC slab is highly influenced by inertial effect. In the initial response stage the impact force is mainly resisted by the slab inertial resistance. The GPC dynamic material properties and structural dynamic amplification effect affect the dynamic response and damage of GPC slabs. Intensive numerical simulations are performed to quantify the influences of slab thickness, reinforcement ratio, impactor weight and impact velocity on impact responses of GPC slabs. Empirical formula is derived based on the test and numerical results to predict the dynamic punching resistance of reinforced GPC slabs. |
| first_indexed | 2025-11-14T11:37:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-91728 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:37:31Z |
| publishDate | 2023 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-917282025-06-16T03:12:57Z Dynamic resistance capacity of GPC slab under pendulum impact loading Chen, Chong Zhang, Xihong Hao, Hong Geopolymer concrete (GPC) as a green construction material has the potential to substitute traditional concrete, but there is a lack of understanding of the performances of geopolymer concrete structures subjected to dynamic loadings. This study investigates the dynamic responses of reinforced concrete slabs made of ambient cured alkali-activated GPC under static and dynamic concentrated load. Laboratory tests are performed which revealed that GPC slabs exhibited typical punching shear failure model under both static and impact load. Current design codes including ACI, Eurocode 2 and CSCT model can well predict the static punching resistance capacity of GPC slab, but fail to predict the dynamic punching resistance. Numerical modelling is carried out to investigate the dynamic punching shear mechanism. The results indicate that the impact response of GPC slab is highly influenced by inertial effect. In the initial response stage the impact force is mainly resisted by the slab inertial resistance. The GPC dynamic material properties and structural dynamic amplification effect affect the dynamic response and damage of GPC slabs. Intensive numerical simulations are performed to quantify the influences of slab thickness, reinforcement ratio, impactor weight and impact velocity on impact responses of GPC slabs. Empirical formula is derived based on the test and numerical results to predict the dynamic punching resistance of reinforced GPC slabs. 2023 Journal Article http://hdl.handle.net/20.500.11937/91728 10.1016/j.jclepro.2023.137144 Elsevier fulltext |
| spellingShingle | Chen, Chong Zhang, Xihong Hao, Hong Dynamic resistance capacity of GPC slab under pendulum impact loading |
| title | Dynamic resistance capacity of GPC slab under pendulum impact loading |
| title_full | Dynamic resistance capacity of GPC slab under pendulum impact loading |
| title_fullStr | Dynamic resistance capacity of GPC slab under pendulum impact loading |
| title_full_unstemmed | Dynamic resistance capacity of GPC slab under pendulum impact loading |
| title_short | Dynamic resistance capacity of GPC slab under pendulum impact loading |
| title_sort | dynamic resistance capacity of gpc slab under pendulum impact loading |
| url | http://hdl.handle.net/20.500.11937/91728 |