Estimates of Permeability of Porous Materials Using Image Analysis of Cross Sections
We have developed an image processing method for characterizing the pore structure of porous materials such as rock and concrete, to provide a means for understanding the dependence of...
A Chemical Image Analysis Procedure as a Method for a Quantitative Modal Analysis of Clinker Minerals
In a chemical image analysis procedure, the specimen is analyzed in a scanning electron microscope in backscatter mode, thus providing an atomic number contrast. The phases are segmented...
Application of Radar Imaging Techniques to Concrete
Wideband radar imaging techniques have the potential of being a powerful tool in detecting steel reinforcing bars and delaminations inside concrete. The success of the method as a nondestructive...
Ground Penetrating Radar: Images of Subsurface Characteristics
Ground penetrating radar has not been widely used for subsurface exploration in Civil Engineering. This paper describes the experimental setup used to explore ground penetrating radar...
A Revised Methodology to Minimize Bias in Determining the Porosity and Void Tensor of Particulate Media
Increased recognition of the importance of fabric in the observed response of particulate media under monotonic and cyclic loading has led to the development of new procedures to quantify...
Digital Image Techniques for Volume Change Measurements in Triaxial Tests
This paper presents an innovative technique that has been used for measuring the volumetric deformation that cylindrical specimens experience during the shearing stages of a triaxial test....
A New Three-Dimensional Modeling Technique for Studying Porous Media
A new three-dimensional technique for modeling the micro-structure of porous media is proposed. On the basis of measurements of characteristics made using thin sections of porous media...
Image Analysis for Interparticle Contact Modeling
Two dimensional photoelastic elements (disks or ellipses) are used as models for studying granular material behavior. The required observations include accurate continuous measurements...
Image Enhancement: Application to Geotomography
Image enhancement complements geotomographic reconstruction in the rendering of better images. In this paper, available image enhancement techniques are reviewed. Emphasis is given to...
Image Analysis Applied to Geotechnical Engineering
Application of scanning electron microscope and image analyzer to the quantification of grain morphology and microfabric of aged sands is briefly reviewed. Relationships of morphology...
Reliability-Based Analysis and Design of Flexible Airfield Pavements
This paper illustrates, a new reliability-based procedure to analyze existing pavements and design new pavements that is being developed by the U.S. Air Force. The procedure uses a rigorous...
A Novel Approach to Develop a Performance Based Test for Rutting of Asphalt Concrete
Asphalt concrete consists of compacted granular aggregates mixed with viscoelastic asphalt cement. The predictive phenomenological models had limited success in explaining the origin and...
Durability of Asphalt Mixture
Five asphalts were used in a laboratory testing program to establish a relationship between mixture properties and the binder properties. These five asphalts were used to make Florida...
Resin Modified Pavement in Airfield Applications
The resin modified pavement (RMP) is a composite paving material that combines the flexible characteristics of an asphalt concrete (AC) material with the durability of a portland cement...
Evaluation of a Large Aggregate Asphaltic Layer in an Airside Pavement
A new analytical method of designing large aggregate asphalt mixes (LAM) was used to design a thick asphalt base layer for an aircraft taxiway. The results of an analysis on the material...
Recycling Concrete and Asphalt Pavements Rehabilitation of Runway 18R-36L Orlando International Airport
The subject project consisted of reconstructing an air carrier runway utilizing a concrete keel section with asphalt overlays along the runway edges. Associated taxiways were rehabilitated...
Pacific Rim TransTech Conference?Volume II
International Ties, Management Systems, Propulsion Technology, Strategic Highway Research Program
This proceedings,
Pipeline Infrastructure II
This proceedings,
Trenchless Track Record
Ottawa is a leading user of trenchless technology for sewer rehabilitation projects. The municipality has nearly a decade's worth of experience with at least nine different...
Finite Element Analysis of Reinforced Concrete in Japan and US: Introduction and Overview
The finite element method of analysis now provides the engineer with the capability to analyze very complex structural systems in a much more realistic manner including geometry and support...
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