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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...

Lime Treatment of Asphalt Mixtures in Improving Resistance to Moisture
Airport flexible pavement is susceptible to moisture damage. Lime treatment of asphalt pavement is considered to be an effective method in improving resistance to moisture. It has been...

A Review of Design Criteria for High RCC Dams
The 1980s could be considered to be the decade during which roller-compacted concrete dams came of age. This economic method of construction is sufficiently proven that very large dams...

Roller Compacted Concrete Mix Design
This paper presents a concise and proven mix design process. It covers all the steps necessary to produce a good roller compacted concrete (RCC) mix design for mass and structural applications,...

RCC Test Specimen Preparation?Developments Toward a Standard Method
As there is no widely recognized standard for the preparation of laboratory test specimens for roller compacted concrete (RCC) mixtures, criteria for developing such a standard are listed....

Pullout Testing of High-Strength Concrete Members
An experimental investigation of a high-strength concrete mixture was undertaken to measure and evaluate pullout and compressive strength properties. Two columns, a slab, and cylindrical...

A Statistical Method for the Reliability of Mechanical Components
The usual statistical treatment of data for the reliability of components is to fit a distribution to them and then to use this theoretical distribution for predictions. But since this...

An Airfield Pavement Forensic Analysis: Cairo East Air Base
The US Army Engineer Waterways Experiment Station (WES) was requested by the Middle East/Africa Projects Office in April 1989 to provide technical assistance in analyzing an unstable asphalt...

Mixture Considerations for High Performance Cement-Based Composites
In the present paper, mixture considerations for producing high performance cement-based composites are discussed. Effects of different factors such as grain size and fiber reinforcement...

Experimental Difficulties Encountered in Testing Air/Water Mixtures
The Tennessee Valley Authority and Voith Hydro, Inc., are conducting a joint research project to study the effects of air admission on hydraulic turbines. Francis turbine models, homologous...

Numerical Modeling of Air/Water Mixtures for Internal Flows
The Tennessee Valley Authority (TVA) currently is working with several organizations to develop design tools for the aerating hydroturbine. Part of this effort includes the investigation...

The Influence of Uniformity on Riprap Stability
Studies have shown that size uniformity influences the stability of riprap. The ratio of fractional sizes of the riprap mixture, D₆₀/D₁₀,...

Maturity and Pullout for High-Strength Concrete
As with other types of concrete mixtures, construction with high-strength concrete requires assurance that sufficient levels of in-place strength are reached at specific times. An experimental...

Laboratory Aging of Asphalt-Aggregate Mixtures
Aging may result in hardening (stiffening) of the mixture which will result in a change in performance of the mixture. This may be beneficial since a stiffer mixture will have improved...

SHRP Program: Asphalt Durability and Specification
The goals of the Strategic Highway Research Program (SHRP) program are an improved specification for asphalt binders and accelerated performance tests that can be employed by user agencies...

An Extended Mixture Approach for Modeling of Fiber Reinforced Cementitious Materials
A rate-independent, anisotropic model for Fiber Reinforced Cementitious Materials (FRCMs) is presented. A continuum damage/plasticity model for the concrete and an effective fiber model...

Relationship Between Laboratory Aging Tests and Field Performance of Asphalt-Concrete Mixtures
Aging of asphalt mixtures is primarily associated with loss of volatile components and oxidation in asphalt during the construction phase (short-term aging), and progressive oxidation...

Water Sensitivity of Asphalt Paving Mixtures
There are two mechanisms by which moisture can degrade the integrity of an asphalt concrete matrix: (a) loss of cohesive strength and stiffness in the asphalt film and (b) the failure...

Effect of Lime on Asphalt Concrete Pavement Performance
In the early to mid 1980's, the Federal Highway Administration constructed 15 experimental field test sections in four states designed to investigate mitigating moisture damage...

Environmental Considerations in the Design of Asphalt Concrete Paving Mixtures
The design of asphalt concrete mixtures is largely based on two empirical mixture design methods. These are 'Marshall' and 'Hveem',...

 

 

 

 

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