- Ultra-High Performance Concrete: A State-Of-The-Art Report for the Bridge Community
- H. Russell ; B. Graybeal
- Book Title / Journal: Publication No. FHWA-HRT-13-060, U.S. Department of Transportation, Federal Highway Administration, McLean, VA, USA
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
- Description
- The term Ultra-High Performance Concrete (UHPC) refers to a relatively new class of advanced cementitious composite materials whose mechanical and durability properties far surpass those of conventional concrete. This class of concrete has been demonstrated to facilitate solutions that address specific problems in the U.S. highway bridge infrastructure. Initial material development research on UHPC began more than two decades ago. First structural deployments began in the late 1990s. First field deployments in the U.S. highway transportation infrastructure began in 2006. For this study, UHPC-class materials are defined as cementitious-based composite materials with discontinuous fiber reinforcement that exhibit compressive strength above 21.7 ksi (150 MPa), pre- and post-cracking tensile strength above 0.72 ksi (5 MPa), and enhanced durability via a discontinuous pore structure. The report documents the state of the art with regard to the research, development, and deployment of UHPC components within the U.S. highway transportation infrastructure. More than 600 technical articles and reports covering research and applications using UHPC have been published in English in the last 20 years, with many more published in other languages. The report includes information about materials and production, mechanical properties, structural design and structural testing, durability and durability testing, and actual and potential applications. The report concludes with recommendations for the future direction for UHPC applications in the United States.
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- UHPC – Development and Testing on Structural Elements
- J.L. Vítek ; R. Coufal ; D. Čítek
- Book Title / Journal: Procedia Engineering
- Year: 2013 , Volume: 65 , Series:
- Structure types ; Concrete structures
- Keywords: Anchorage zone ; ultra high performance concrete
- Description
- Ultra high performance concrete (UHPC) is developed using the local constituents. The concrete mix exceeding the compression cylinder strength of 150 MPa was thoroughly tested. Its production in industrial mixing plants was verified. Its application in structures required additional tests investigating the performance of anchoring zones and bond between steel and UHPC. The tests showing the load carrying capacity of structural elements were carried out. The developed concrete mixes are now used for construction of a footbridge.
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- Deformation capacity of unreinforced masonry walls subjected to in-plane loading: a state-of-the-art review
- A.H. Salmanpour ; N. Mojsilovic ; J. Schwartz
- Book Title / Journal: International Journal of Advanced Structural Engineering
- Year: 2013 , Volume: 5 , Series:
- Structure types ; Masonry Structures
- Keywords: Deformation capacity ; Shear test ; Macro-element ; Structural masonry
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- Addressing infrastructure durability and sustainability by self healing mechanisms - recent advances in self healing concrete and asphalt
- E. Schlangen ; S. Sangadji
- Procedia Engineering, Vol. 54, pages 39-57
- Book Title / Journal:
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
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- Performance criteria to assess shrinkage cracking tendency in concrete overlay
- S.A. Kristiawan
- Procedia Engineering, Vol. 54, pages 82-100
- Book Title / Journal:
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
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- Combined use of non-destructive tests for assessment of strength of concrete in structure
- Y. Verma ; K. Murari ; A.K. Jain ; A. Kathuria ; A. Kumar
- Procedia Engineering, Vol. 54, pages 241-251
- Book Title / Journal:
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
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- Self-compacting concrete with recycled traditional roof tile powder
- B. Herbudiman ; A.M. Saptaji
- Procedia Engineering, Vol. 54, pages 805-816
- Book Title / Journal:
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
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- Mixed concrete optimization using fly ash, silica fume and iron slag on the scc's compressive strength
- D. Raharjo ; A. Subakti
- Procedia Engineering, Vol. 54, pages 827-839
- Book Title / Journal:
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
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- Analytical investigation of vehicle fires in precast concrete parking structures
- S. Pessiki ; J. Bayreuther
- PCI Journal, summer 2013, pages 111-123
- Book Title / Journal:
- Year: 2013 , Volume: , Series:
- Structure types ; Concrete structures
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- Fire resistance of ceiling slab concreted in trapezoidal sheet
- R. Cajka ; P. Mateckova
- Book Title / Journal: Procedia Engineering
- Year: 2013 , Volume: Vol.65 , Series:
- Structure types ; Composite structures
- Description
- In the paper the heat exposure and structural response model of reinforced concrete ceiling concreted into trapezoidal sheet is analysed. Temperature within the cross-section and in reinforcement is determined on the basis of European standards for fire design of concrete structures and steel-concrete structures using available formulas. Mechanical load is stated for accidental design situation. Fire resistance is assessed for structural resistance and insulation criteria.
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- Capacity of composite steel-concrete columns
- M. Rosmanit ; P. Pařenica
- Book Title / Journal: Procedia Engineering
- Year: 2013 , Volume: Vol.65 , Series:
- Structure types ; Composite structures
- Description
- This paper studies the resistance of composite steel-concrete cross-section of columns at the ultimate limit state. The recommended design procedure is focused on solving the problem with the aid of the normal force vs. bending moment diagram, whose construction is time-consuming. This makes economical design difficult. Therefore a user-friendly application (a simple program on VBA platform) was developed for everyday use. The practical solution and some derivations are explained in this paper.
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- The behavior of single span stone masonry skew arches.
- V. Sarhosis ; D.V. Oliveira ; J. Lemos ; Y. Sheng ; P.B. Lourenço
- Book Title / Journal: ARCH’13 – 7th International Conference on Arch Bridges, Split, Croatia,
- Year: 2013 , Volume: , Series:
- Structure types ; Masonry Structures
- Description
- The work reported in this paper summarises the development and results
obtained from a 3D computational model, using the distinct element software 3DEC, that
was used to investigate the effect of the angle of skew on the load carrying capacity of
sixteen different single span stone masonry arches. The variables investigated in the
research were the arch span, the span : rise ratio and the skew angle. In order to gain an
understanding of the behaviour of the arches, no attempts were made to model the effects of
fill, spandrel walls or any other construction details. For each model, a full width vertical
line load was applied incrementally to the extrados at quarter span until collapse. At each
load increment the predicted crack development and vertical deflection profile was
recorded. The results are compared with similar “square” (or regular) arches in order to
identify the influence of skew on the behaviour of the arches.
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- Influence of the mechanical properties of lime mortar on the strength of brick masonry
- A. Costigan ; S. Pavía
- Book Title / Journal: Jan Valek, John J. Hughes and Caspar J. W. P. Groot, (Eds.), RILEM bookseries, Historic Mortars: Characterisation, Assessment and Repair, Springer New York,
- Year: 2013 , Volume: 7 , Series:
- Structure types ; Masonry Structures
- Description
- This paper aims at improving the quality of lime mortar masonry by
understanding the mechanics of mortars and masonry and their interaction. It
investigates how the mortar’s compressive and flexural strengths impact the
compressive and bond strength of clay brick masonry bound with calcium lime
(CL) and natural hydraulic lime (NHL) mortars. It concludes that the strength of
the bond has a greater impact on the compressive strength of masonry than the
mortar’s strength. The masonry compressive strength increased proportionally to
the strength of the bond up to 6 months. A regression analysis, giving a second
order equation with coefficient of determination (R2
) of 0.918, demonstrates a
strong and predictable relationship between bond strength and masonry
compressive strength. It was noted that CL90s mortar masonry reaching a high
bond value was stronger than that built with a stronger mortar but displaying a
poorer bond. Finally, the mechanics of lime mortars and their masonry are similar.
The predominantly elastic behaviour of the mortars of higher hydraulic strength
compares well with the elastic and brittle behaviour of their masonry, with either
little (NHL2) or non-existent plasticity (NHL3.5 and 5); in contrast, the CL90
mortar and masonry exhibit a plastic behaviour.
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- Characterization of Steel Foams for Structural Components.
- B.G. Smith ; S. Szyniszewski ; J.F. Hajjar ; B.W. Schafer ; S.R. Arwade
- Metals, Vol. 2, No. 4, pages 399-410
- Book Title / Journal:
- Year: 2012 , Volume: , Series:
- Structure types ; Steel structures
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- Study, test and designing of cold formed section as per AISI code.
- S.M. Hardwani ; A.V. Patil
- Int. Journal of Applied Sciences and Engineering Research, Vol. 1, Issue 3, pages 522-531.
- Book Title / Journal:
- Year: 2012 , Volume: , Series:
- Structure types ; Steel structures
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