Publications

Displaying 26 - 50 of 456

Relationship between fine aggregate size and the air void system of six mortars: I. Air void content and diameter distribution

May 23, 2022

Author(s)

Edward Garboczi, Kai Lyu, Yufeng Gao, Changwen Miao

The air void network, as part of the pore structure of cement-based materials, controls their freeze- thaw durability. Precisely determining the characteristics of the air void system is important in material design and freeze-thaw durability evaluation

Method of Moment Analysis of Carbon Nanotubes Embedded in A Lossy Dielectric Slab Using A Multilayer Dyadic Green's Function

March 28, 2022

Author(s)

Edward Garboczi, Sumitra Dey, Ahmed Hassan, Deb Chatterjee

Modeling the electromagnetic response of Carbon Nanotube (CNT) reinforced composites is inherently a three dimensional (3D) multi-scale problem that is challenging to solve in real-time for nondestructive evaluation applications. This article presents a

Print Fidelity Metrics for Additive Manufacturing of Cement-based Materials

March 24, 2022

Author(s)

Edward Garboczi, Newell Moser, Joseph Biernacki, Hajar Afarani, Ebrahim Esfahani

Additively manufactured cement-based structures for infrastructure applications suffer from in-construction shape deformations, which are a strong function of process conditions and the rheology of the printing material (cement paste, mortar, or concrete)

Interface History on Strain Field Evolution in Epoxy Resins

January 21, 2022

Author(s)

Edward Garboczi, Newell Moser, Jena McCollum, Jared Strutton, Abby Jennings, Brandon Runnels

To determine the viability of digital image correlation in the analysis of additively manufactured thermosets, we devised a testing method to examine the effect of interface history (i.e., time between interface formation and original material deposition)

Asymmetric Carbon Nanotube Dimers Embedded in a Dielectric Slab: New Plasmonic Resonance Behavior

December 7, 2021

Author(s)

Sumitra Dey, Deb Chatterjee, Ahmed Hassan, Edward Garboczi

All prior work on modeling the full-wave electromagnetic response of carbon nanotubes (CNTs) has focused on CNTs in free-space, whereas in most practical applications, CNTs are embedded in a dielectric substrate. In this work, we use full-wave simulations

Using Surface Asperities for Efficient Random Particle Overlap Detection in the Generation of Randomly Oriented and Located Particle Arrangements

November 22, 2021

Author(s)

Edward Garboczi, Christa Torrence, Zachary Grasley, William Lawrimore

A novel method of detecting overlap between two irregularly shaped virtual particles whose surfaces are described by analytical functions is presented in this study. Utilizing the analytical equation that describes the surface of the particle, the first

A Comparison of Particle Size Distribution and Morphology Data acquired using Lab-based and Commercially Available Techniques: Application to Stainless Steel Powder

November 17, 2021

Author(s)

Justin Whiting, Edward Garboczi, Vipin Tondare, John Henry J. Scott, Alkan Donmez, Shawn P. Moylan

The particle size distribution (PSD) and particlemorphology ofmetal powders undoubtedly affects the quality of parts produced by additivemanufacturing (AM). It is, therefore, crucial to accurately knowthe PSD and morphology of these powders. There exist

A thermodynamics-guided framework to design lightweight aggregate from waste coal combustion fly ash

November 16, 2021

Author(s)

Mohammad Balapour, Thiha Thway, Rathin Rao, Grace Hsuan, Yaghoob Franam, Newell Moser, Edward Garboczi

In this study, a systematic thermodynamics-based framework was applied to recycle waste low and high-calcium coal combustion Fly Ash (FA) into synthetic lightweight aggregates (LWA) through sintering. The process to successfully manufacture synthetic LWA

An Algorithm for Computing the Compressive Strength of Heterogeneous Cohesive-Frictional Materials - Application to Cement Paste

October 12, 2021

Author(s)

F P. Ganneau, F -. Ulm, J Gondzio, Edward Garboczi

An algorithm based on a finite element discretization of the lower bound yield theorem is applied to digital images, which allows the determination of the compressive strength of highly heterogeneous materials following a Drucker-Prager (or Mohr-Coulomb)

Computations of Particle Surface Characteristics Using Optical and X-Ray CT Images

October 12, 2021

Author(s)

E Masad, S Saadeh, T Al-Rousan, Edward Garboczi, D Little

The description of particle surface characteristics is of interest in many disciplines in science and engineering such as powder technology, geology, soil science, and infrastructure materials. Consequently, there is a need to develop methods to quantify

Impedance/Dielectric Spectroscopy of Electroceramics. Part 2: Grain Shape Effects and Local Properties of Polycrystalline Ceramics

October 12, 2021

Author(s)

N Kidner, Z J. Homrighaus, B J. Ingram, T Mason, Edward Garboczi

The reduction of grain size from the microcrystalline regime into the nanocrystalline regime is known to produce significant changes in the transport properties of polycrystalline ceramics. Part 1 of this series [1] described the development of a pixel

In-situ Microstructural Analysis of Cement Paste During Freezing. Part II: Computer Modeling

October 12, 2021

Author(s)

G M. Moss, Edward Garboczi, Hamlin M. Jennings

A combination of a three-dimensional hydration model and finite element analysis is used to simulate the microstructural behavior of cement paste during freezing. Results illustrate the significant effects of water/cement ratio and degree of hydration

Influence of Hydrate Dissolution by Water on the Young s Modulus of Cement-Based Materials

October 12, 2021

Author(s)

S Kamali, M Moranville, Edward Garboczi, S Prene, B Gerard

Leaching of concrete by water may severely damage structures like radioactive waste depositories or water supply stations. This paper presents the influence of water leaching on the mechanical properties of cement pastes. The NIST microstructure model

Search Publications by: Edward Garboczi (Assoc)