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Showing 1 to 20 of 91 for “"high performance concrete"”.
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Fracture toughness of ultra high performance concrete
In this study, fracture properties of Ultra-High Performance Concrete (UHPC), and High Performance Concrete (HPC) are presented. The average compressive strengths of UHPC and HPC used in the tests were 141 MPa, and 55 MPa respectively. Formulation and processing of the mixes and test specimens are …
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Ultra-High Performance Concrete and Lattice Models
Ultra-High Performance Concrete (UHPC) is an evolving structural material that has attracted interest in the civil engineering industry recently. Currently, it is being used mainly for highway infrastructure in the US and also being explored for various other applications. The existing design …
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Complete stress-strain characteristics of high performance concrete
High performance concrete (HPQ has recently become a widely used concrete construction material for modem buildings, bridges, and pavements, etc. To produce such a better quality of concrete, chemical and mineral admixtures such as fly ash, slag cement, and silica fume, ground granulated blast …
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Design of wind turbines with Ultra-High Performance Concrete
Ultra-High Performance Concrete (UHPC) has proven an asset for bridge design as it significantly reduces costs. However, UHPC has not been applied yet to wind turbine technology. Design codes do not propose any recommendations or guidance for the towers, thus encouraging the engineer to use less …
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Ultra-High Performance Concrete Shear Walls in Tall Buildings
… to quantify the implications of using ultra-high performance concrete (UHPC) for shear walls in tall buildings considering structural efficiency and environmental sustainability. The Lattice Discrete Particle Model (LDPM) was used to simulate the response to failure of concrete shear walls …
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Filler effect of mineral powders on ultra high performance concrete
La conception du béton à ultra-haute performance (BUHP) a été affinée depuis sa conception dans les années 90. En raison de ses très bonnes performances dans les scénarios de structure et de durabilité, de plus en plus de recherches sont menées sur l'optimisation des composants nécessaires pour …
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Durability studies of high performance concrete used for bridge decks
The present study, as a part of the WVDOH large scale project on HPC, was directed to evaluate various durability aspects of HPC using West Virginia (WV) sources of materials. A total of 24 HPC mixtures were prepared with different supplementary cementing materials (SCM), such as fly ash, slag, …
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Optimization and behavior of high-performance concrete in structural applications
… of material selection for the production of high-performance concrete and to examine the behavior of these materials in structural applications. The results of the research have been submitted for publication in five conference proceedings and technical journals. The first paper investigates …
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Recommendations for the design of ultra-high performance concrete structures
… and installation. DUCTAL, a new ultra-high performance concrete (UHPC) with enhanced tensile, compressive, and deflective behavior offered by LaFarge, is one such material, and current guidelines for concrete do not sufficiently account for these improved properties. Research by other …
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Practical limitations of single-span ultra-high performance concrete beams
… researchers have continued to push the limits of concrete mixtures through the creation of ultra-high performance concretes. The use of this class of materials has allowed designers to build lighter and stronger structures, and in some cases has allowed the construction of concrete members that do …
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Development and optimization of ultra-high performance concrete using local materials
… bridge construction, a material known as ultra-high performance concrete (UHPC) is often used to join structural elements of the bridge together. While the material performs well in accelerated conditions, more widespread adoption of UHPC is often hindered by its high price and the proprietary …
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Model-based optimization of ultra high performance concrete highway bridge girders
Ultra High Performance Concrete (UHPC) represents a breakthrough for civil engineering materials. Compared to conventional concrete solutions, UHPC possesses such dramatic mechanical improvements that new design philosophies, safe guidelines, and design tools for UHPC structures are required to …
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Non-Invasive Permeability Assessment of High-Performance Concrete Bridge Deck Mixtures
Concrete construction methods and practices influence the final in-place quality of concrete. A low permeability concrete mixture does not alone ensure quality in-place concrete. If the concrete mixture is not transported, placed and cured properly, it may not exhibit the desired durability and …
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Horizontal Shear Transfer Between Ultra High Performance Concrete And Lightweight Concrete
Ultra high performance concrete, specifically Ductal® concrete, has begun to revolutionize the bridge design industry. This extremely high strength material has given smaller composite sections the ability to carry larger loads. As the forces being transferred through composite members are …
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Single Straight Steel Fiber Pullout Characterization in Ultra-High Performance Concrete
… single straight steel fiber pullout in Ultra-High Performance Concrete (UHPC). Several parameters were explored including the distance of fibers to the edge of specimen, distance between fibers, and fiber volume in the matrix. The pullout load versus slip curve was recorded, from which the …
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Characterization of Ultra-High Performance Concrete Tension Behavior Using Different Test Methods
Ultra-high performance concrete (UHPC) is a relatively new type of cementitious construction material known for its superior mechanical and durability properties, which has contributed to its increasing popularity and usage in the construction industry. Unlike conventional concrete, UHPC possesses …
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Residual Strength of Ultra-High Performance Concrete After Exposure to Elevated Temperatures
… on the compressive strength of <a></a><a>ultra-high-performance fiber-reinforced concrete </a>(<a>UHPFRC</a>). Two different mixtures of a commercially available UHPFRC were considered in this study. The standard mixture offered by the manufacturer incorporates only steel-fibers to improve the …
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