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Search Publications by: Edward Garboczi (Assoc)

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Displaying 376 - 400 of 456

Sorptivity-Based Service Life Predictions for Concrete Pavements

September 1, 2001
Author(s)
Dale P. Bentz, M A. Ehlen, Chiara F. Ferraris, Edward J. Garboczi
The degradation of concrete pavements is often controlled by the transport of a deleterious species (chloride or sulfate ions, or water in the case of freeze/thaw) into the concrete. With this in mind, a three-year research project, funded by the Federal

Analysis of the Impedance Spectra of Short Conductive Fiber-Reinforced Composites

August 1, 2001
Author(s)
J M. Torrents, T Mason, A Peled, S Shah, Edward Garboczi
The presence of small amounts of short conductive fibers in a composite of finite matrix conductivity results in the subdivision of the one matrix impedance arc into two separate low and high frequency arcs in the complex impedance plane. These features

Analysis of the Impedance Spectra of Short Conductive Fiber-Reinforced Composites

August 1, 2001
Author(s)
Edward J. Garboczi, J M. Torrents, T O. Mason, A Peled, S P. Shah
The presence of small amounts of short conductive fibers in a composite of finite matrix conductivity results in the subdivision of the one matrix impedance arc into two separate low and high frequency arcs in the complex impedance plane. These features

Acquiring, Analyzing, and Using Complete Three-Dimensional Aggregate Shape Information

April 1, 2001
Author(s)
Edward J. Garboczi, Nicos Martys, H A. Saleh, Richard A. Livingston
The shape of aggregates, from whatever source, plays a crucial role in determining the properties of the composite material in which they are embedded (e.g., asphaltic or portland cement concrete). To properly characterize this three-dimensional shape

Elastic Moduli of Model Random Three-Dimensional Closed-Cell Cellular Solids

January 1, 2001
Author(s)
A P. Roberts, Edward Garboczi
Most cellular solids are random materials, while practically all theoretical results are for periodic models. To be able to generate theoretical results for random models, the finite element method (FEM) was used to study the elastic properties of solids

Elastic Properties of Model Porous Ceramics

December 1, 2000
Author(s)
A P. Roberts, Edward Garboczi
The finite element method (FEM) is used to study the influence of porosity and pore shape on the elastic properties of model porous ceramics. Young's modulus of each model is practically independent of the solid Poisson's ratio. At a sufficiently high

Knowledge-Based Systems and Computational Tools for Concrete - Computer Integrated Knowledge Systems Combine Databases, Models, and Computing Tools to Address the Complex Nature of Concrete

December 1, 2000
Author(s)
Edward J. Garboczi, Dale P. Bentz, G J. Frohnsdorff
Within the Building Materials Division at the National Institute of Standards and Technology (NIST), the Hypercon Partnership for High Performance Concrete Technology [(PHPCT) http://ciks.cbt.nist.gov/phpct/] program is working to develop the materials