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Showing 1 to 20 of 59 for “"high strength concrete"”.
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Interface fracture in high strength concrete
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Performance issues for high strength concrete in bridges
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Dynamic modelling of lightweight high-strength concrete under impact
… experimental studies on modeling of lightweight high-strength concrete (LWHSC) under static and dynamic loadings. A new strain-based damage model is developed based on continuum damage mechanics. The proposed model incorporates the strain rate effects on various concrete properties, such as …
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Axial compressive behaviour of FRP-confined high-strength concrete
External confinement of concrete columns with fibre-reinforced polymer (FRP) sheets has been shown to lead to significant improvements on the axial compressive behaviour of these columns. This application of FRP composites is effective as a confinement material for concrete, in both the seismic …
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Study of Drift Limits for High-Strength Concrete Columns
The effect of the controlled variables on the behavior of the specimens is discussed and a simple theoretical approach to calculate the critical coordinates for the load-displacement response is presented.
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Creep and Shrinkage of a High Strength Concrete Mixture
In addition to immediate elastic deformations, concrete undergoes time-dependent deformations that must be considered in design. Creep is defined as the time-dependent deformation resulting from a sustained stress. Shrinkage deformation is the time-dependent strain that occurs in the absence of an …
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Compressive Creep of a Lightweight, High Strength Concrete Mixture
Concrete undergoes volumetric changes throughout its service life. These changes are a result of applied loads and shrinkage. Applied loads result in an instantaneous recoverable elastic deformation and a slow, time dependent, inelastic deformation called creep. Creep without moisture loss is …
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Response of high strength concrete columns under fire-induced biaxial bending
Reinforced concrete (RC) columns, under fire conditions, can experience biaxial bending which can arise due to eccentricity in loading, uneven spalling, or due to significant thermal gradients generated through 1-, 2-, or 3-sides of fire exposure. High strength concrete (HSC) columns are especially …
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Inelastic web crushing performance limits of high-strength-concrete structural walls
… of the three new toll bridges in California has highlighted the application of the hollow rectangular bridge piers with highly-reinforced boundary elements and the connecting walls. However, current conservative design approaches result in massive cross sections that can lead to increased …
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Bond of glass fibre reinforced polymer bars in high strength concrete
… glass fibre reinforced polymer (GFRP) bars with high concrete strength. The current research project aims to compare between bond measured from a pull-out test and a hinged beam test for GFRP bars embedded in high strength concrete. Different parameters influencing bond such as GFRP bar diameter, …
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Applicability of high strength concrete for buildings in active seismic regions
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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Optimal applications of high-strength concrete in structural walls of tall buildings
This study examines the application of high-strength concrete (HSC) in structural walls of tall buildings. Emphasis is put on the cost-benefits corresponding to the use of higher concrete strengths. The parameters included in the cost analysis are: the material cost of concrete and reinforcing …
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Load transfer from high-strength concrete columns through lower strength concrete slabs
… were tested to investigate the effects on high strength concrete columns due to the presence of ordinary strength floor concrete layer in between. The specimens consisted of four sandwiched type of columns and two edge columns. The four columns, 55 in. long, had a 7 in. layer of floor …
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Interface fracture mechanics of high strength concrete : size effect and aggregate roughness
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Influence of constituents' properties on the fracture properties of high strength concrete
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Axial load capacity of circular steel tube columns filled with high strength concrete
… examines the axial load capacity of circular Concrete Filled Steel Tube columns using High Strength Concrete (CFST-HSC). Emphasis is drawn to the enhanced axial capacity of short columns attributed to the lateral confinement of the concrete infill provided by the steel encasement. The degree …
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The potential of porcelain waste as sand replacement to produce high strength concrete
… like porcelain waste (PW). Recently, due to high demand in the construction industries, consumption of sand has increased which lead to series of problems such as natural sand depletion and its negative impact on the environment. This research is to investigate the possibility of using …
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Uniaxial and triaxial behavior of high strength concrete with and without steel fibers
… and triaxial compression behavior for both high strength concrete (HSC) and steel fiber reinforced high strength concrete (SFHSC). The experimental study mainly focuses on the octahedral shear stress strain relationship of those two types of concrete, which is adopted as the basis to develop …
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Normal-strength and high-strength concrete columns under cyclic axial load and biaxial moment
… Polymer (CFRP) materials to repair and strengthen various concrete members has become popular in the structural retrofitting field as an effective way to enhance the strength and ductility of concrete members due to its superior mechanical properties. In this study a method was …
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