Cadoni, Ezio and Briccola, Deborah and Dotta, Matteo and Forni, Daniele (2022) Dynamic Behaviour of Two UHPC Matrixes in Direct Tension. ACI Symposium Publication, 355. pp. 11-18.
Full text not available from this repository.Abstract
Understanding the dynamic response of cementitious materials is one of the key issues in the design and assessment of structures subjected to blast or impact loadings. The response of the material to these dynamic actions can be dramatically different and it must be carefully evaluated. The experimental response in direct tension of two ultra-high-performance concretes, tested in a wide range of stress-rate from 0.3 MPa/s (0.044 ksi/s) to 1.3 TPa/s (188'549 ksi/s), is presented in the paper. An electro-mechanic universal machine, a Hydro-Pneumatic Machine, and a Split Hopkinson Tensile Bar device were used to test low, medium, and high stress rates, respectively. The results showed a marked rate dependency of these materials. The resulting DIFs highlighted how Model Code 2010 underestimate the material dynamic strength both at medium and high stress-rate.
| Item Type: | Scientific journal article, Newspaper article or Magazine article |
|---|---|
| Uncontrolled Keywords: | UHPC; High strain-rate; Split Hopkinson Tensile Bar; Tensile strength; DIF |
| Subjects: | Engineering Engineering > Civil engineering Engineering > Civil engineering > Structural engineering |
| Department/unit: | Dipartimento ambiente costruzioni e design > Laboratorio SUPSI DYNAMAT |
| Depositing User: | Ezio Cadoni |
| Date Deposited: | 23 Aug 2022 05:52 |
| Last Modified: | 24 Aug 2023 14:00 |
| URI: | http://repository.supsi.ch/id/eprint/13495 |
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