Lime-Fly Ash-Aggregate Base and Subbase Courses
This paper describes the use of lime-fly ash-aggregate (LFA) base and subbase courses for highway pavements. This type pavement course is considered as an alternate to cement treated bases...

Compressive Strengths of Lean Concretes Containing Fly Ash
The compressive strength development of lean concretes containing fly ash was evaluated. Concretes were prepared at total cementitious materials contents of 423, 517, and 564 lb/yd3...

A Hard Look at Concrete
Concrete has been looked upon as something fixed and unchanging, a generic, nondescript mass, But it demands specific engineering attention. Because many existing concrete studies are...

Sulfate Attack on Concrete Containing Fly Ash
The use of fly ash as a portland cement replacement in concrete may provide many technical and economic advantages. One such technical advantage is to improve the resistance of concrete...

Settlement Characteristics from Insitu Tests in Flyash Structural Fills
Flyash from the Baltimore Gas and Electric Company's plants was used to construct structural fills in thickness ranging from 5 to 25 feet (1.5m to 7.6m). Several warehouses...

SOAR (Stabilized Oil Ash Reef) Performance: An Ocean Alternative to Landfills

Power Without Acid
Anticipating tighter acid rain controls, DOE is developing duct injection units that can be attached to existing powerplants. In a typical duct injection system, lime is sprayed into existing...

Storing Sediment and Freeing Fish
When Mount St. Helens erupted in May 1980, it sent a river of pyroclastic ash and other debris into Washington's North Fork Toutle River Valley. The resulting debris pile...

Clogging Study of Geotextile with Weathered Mudstone
This paper focuses on the combined use of fly ash and geotextiles as a solution for the typical engineering problem of weathered mudstone slopes encountered in Taiwan. In situ collapsed...

Design of Ash Basin Dike across Cove
Embankments built over soft, unstable foundation materials had required that the materials either be removed or reinforced. With the introduction of geotextiles, it is now economically...

Recent Progress in Coal Ash Utilization and the Effect of Environmental Issues and Regulations
This paper summarizes for civil engineers several publications that help to specify and use coal combustion by-products in construction and other applications in a technically sound, commercially...

Fly Ash Utilized in Concrete—Technology Update
Fly ash is frequently utilized as a pozzolanic substance in Portland cement concrete. Levels of such utilization, a reflection of current practice/technology, seem to have stabilized at...

Guidelines for Design and Construction of Pozzolanic Stabilized Base Course Mixtures
The American Coal Ash Association (ACAA) has developed a manual of recommended practice which contains guidelines for the design and construction of pozzolanic stabilized base course mixtures...

Low Permeability Liners Incorporating Fly Ash
This paper summarizes the results of a research study undertaken at West Virginia University to evaluate the feasibility of utilizing stabilized fly ash as a low permeability liner material....

Subsidence Control by High Volume Grouting
Mine grouting programs generally fall into two general methods: flushing and grout columns. With the flushing method, the entire mine under the area to be protected is filled. Grout columns...

Disposal and Utilization of Electric Utility Wastes
The papers presented in this book summarize the recent developments in coal ash utilization technology, and the current issues and regulations associated with the environmental effects...

Seepage Effects on Sedimentation of Fly Ash Slurry

Garbage Management in Japan: Leading the Way
Excerpts from a book that details how land-poor Japan has less garbage problems than the land rich United States. Chapter Six, Incineration, is excerpted. In Japan, incineration is regarded...

Fly Ash Fills a Valley
The Pennsylvania Department of Transportation (PennDOT) recently placed narly 400,000 tons of fly ash in a structural fill along I-279 near Pittsburgh. The fly ash, believed to be the...

Soil Improvement Committee—Admixtures Report

 

 

 

 

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