Design and Behaviour of Prestressed Ultra-High Performance Concrete Channel Girders Using Local Materials
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Détails bibliographiques
| Auteur(s): |
Mark P. Manning
(New Mexico State University, Las Cruces, New Mexico, USA)
Brad D. Weldon (New Mexico State University, Las Cruces, New Mexico, USA) David V. Jáuregui (New Mexico State University, Las Cruces, New Mexico, USA) Craig M. Newtson (New Mexico State University, Las Cruces, New Mexico, USA) |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Conference: Structural Engineering: Providing Solutions to Global Challenges, Geneva, Switzerland, September 2015 | ||||
| Publié dans: | IABSE Conference Geneva 2015 | ||||
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| Page(s): | 1544-1551 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2015 | ||||
| DOI: | 10.2749/222137815818358916 | ||||
| Abstrait: |
Two full-scale prestressed bridge girders were designed, cast, and tested in flexure. The first utilizes non-proprietary ultra-high performance concrete (138 MPa, UHPC) mixture proportions developed using materials local to the state of New Mexico, USA. Steel fibres were added to the UHPC at 1.5% by volume. The second was designed using high performance concrete (66 MPa) mixture proportions common to New Mexico bridge design. Through comparative analyses of varied design parameters including material properties, reduction of section geometry, reduced mild steel reinforcement, and the use of high strength steel fibres, this investigation provides evidence of the improved strength and ductility characteristics of UHPC and demonstrates the contribution of steel fibre reinforcement to flexural and tensile capacity. The results will aid development of design tools and recommendations for implementation of UHPC into local bridge design. |
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