Experimental investigation of ultra-high performance concrete slabs under contact explosions
Unlike ductile behaviour under static loads, a reinforced concrete structure can respond in a brittle manner with highly localised damage like concrete spalling, cratering and reinforcement rupturing under close-in or contact explosions. High speed fragmentation resulting from concrete spall may cau...
| Main Authors: | , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier
2016
|
| Online Access: | http://hdl.handle.net/20.500.11937/13361 |
| _version_ | 1848748327047266304 |
|---|---|
| author | Li, Jun Wu, C. Hao, Hong Wang, Z. Su, Y. |
| author_facet | Li, Jun Wu, C. Hao, Hong Wang, Z. Su, Y. |
| author_sort | Li, Jun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Unlike ductile behaviour under static loads, a reinforced concrete structure can respond in a brittle manner with highly localised damage like concrete spalling, cratering and reinforcement rupturing under close-in or contact explosions. High speed fragmentation resulting from concrete spall may cause severe casualties and injuries. It is therefore important to have a better understanding of the concrete spall phenomena and fragments distribution. In the present study, contact explosion tests were carried out on concrete slabs to observe the concrete crater and spall damage. Seven slabs including two control specimens made of normal strength concrete (NRC) and five ultra-high performance concrete (UHPC) slabs are tested. The superior blast resistance capacity of UHPC slabs is verified through comparison against NRC slabs. The influence of longitudinal reinforcement spacing and slab depth on the spall resistance of UHPC slabs is investigated. Predictions through available empirical methods are made and compared with the test observations. The accuracy of these empirical methods is discussed. All fragments resulting from the contact blast tests are collected and analysed through sieve analysis. It is found that Weibull distribution can be used to model the fragments size distribution of NRC slabs while Log-normal distribution better models the fragments size distribution of UHPC slabs. |
| first_indexed | 2025-11-14T07:03:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-13361 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:03:16Z |
| publishDate | 2016 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-133612018-02-28T05:48:14Z Experimental investigation of ultra-high performance concrete slabs under contact explosions Li, Jun Wu, C. Hao, Hong Wang, Z. Su, Y. Unlike ductile behaviour under static loads, a reinforced concrete structure can respond in a brittle manner with highly localised damage like concrete spalling, cratering and reinforcement rupturing under close-in or contact explosions. High speed fragmentation resulting from concrete spall may cause severe casualties and injuries. It is therefore important to have a better understanding of the concrete spall phenomena and fragments distribution. In the present study, contact explosion tests were carried out on concrete slabs to observe the concrete crater and spall damage. Seven slabs including two control specimens made of normal strength concrete (NRC) and five ultra-high performance concrete (UHPC) slabs are tested. The superior blast resistance capacity of UHPC slabs is verified through comparison against NRC slabs. The influence of longitudinal reinforcement spacing and slab depth on the spall resistance of UHPC slabs is investigated. Predictions through available empirical methods are made and compared with the test observations. The accuracy of these empirical methods is discussed. All fragments resulting from the contact blast tests are collected and analysed through sieve analysis. It is found that Weibull distribution can be used to model the fragments size distribution of NRC slabs while Log-normal distribution better models the fragments size distribution of UHPC slabs. 2016 Journal Article http://hdl.handle.net/20.500.11937/13361 10.1016/j.ijimpeng.2016.02.007 Elsevier fulltext |
| spellingShingle | Li, Jun Wu, C. Hao, Hong Wang, Z. Su, Y. Experimental investigation of ultra-high performance concrete slabs under contact explosions |
| title | Experimental investigation of ultra-high performance concrete slabs under contact explosions |
| title_full | Experimental investigation of ultra-high performance concrete slabs under contact explosions |
| title_fullStr | Experimental investigation of ultra-high performance concrete slabs under contact explosions |
| title_full_unstemmed | Experimental investigation of ultra-high performance concrete slabs under contact explosions |
| title_short | Experimental investigation of ultra-high performance concrete slabs under contact explosions |
| title_sort | experimental investigation of ultra-high performance concrete slabs under contact explosions |
| url | http://hdl.handle.net/20.500.11937/13361 |