Low Cost Fly Ash - Sand Stabilized Roadway

Low Cost Fly Ash - Sand Stabilized Roadway
Author: S. J. Klassen
Publisher:
Total Pages: 32
Release: 1986
Genre: Fly ash
ISBN:
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Fly ash, a by-product of coal-fired electricity generating plants, has for years been promoted as a material suitable for highway construction. Disposal of the large quantities of fly ash produced is expensive and creates environmental concerns. The pozzolanic properties make it promotable as a partial Portland cement replacement in pc concrete, a stabilizer for soil and aggregate in embankments and road bases, and a filler material in grout. Stabilizing soils and aggregates for road construction has the potential of using large quantities of fly ash. Iowa Highway Research Board Project HR-194, "Mission-Oriented Dust Control and Surface Improvement Processes for Unpaved Roads", included short test sections of cement, fly ash, and salvaged granular road material mixed for a base in western Iowa. The research showed that cement fly ash aggregate (CFA) has promise as a stabilizing agent in Iowa. There are several sources of sand that when mixed with fly ash may attain strengths much greater than fly ash mixed with salvaged granular road material at little additional cost

Fly Ash Soil Stabilization for Non-uniform Subgrade Soils: Engineering properties and construction guidelines

Fly Ash Soil Stabilization for Non-uniform Subgrade Soils: Engineering properties and construction guidelines
Author:
Publisher:
Total Pages: 182
Release: 2005
Genre: Fly ash
ISBN:
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Soil treated with self-cementing fly ash is increasingly being used in Iowa to stabilize pavement subgrades, but without a complete understanding of the short- and long-term behavior. To develop a broader understanding of fly ash engineering properties, mixtures of five different soil types, ranging from ML to CH, and several different fly ash sources (including hydrated and conditioned fly ashes) were evaluated.

Lime Stabilization

Lime Stabilization
Author:
Publisher: Transportation Research Board National Research
Total Pages: 68
Release: 1987
Genre: Technology & Engineering
ISBN:
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For many years, various forms of lime, including products with varying degrees of purity, have been utilized successfully as soil stablizing agents. The state of the art in lime treatment based on a comprehensive analysis of current practice and technical literature is presented in this report. References are included for more information.

Conversion of Large Scale Wastes into Value-added Products

Conversion of Large Scale Wastes into Value-added Products
Author: Justin S.J. Hargreaves
Publisher: CRC Press
Total Pages: 168
Release: 2013-12-12
Genre: Nature
ISBN: 1466512628
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Concern about the fate of waste products produced by a wide range of industrial processes has led to the realization that they may have potential uses and, therefore, value. In an effort to develop more sustainable processes and reduce waste storage, the use of waste as a resource has been gaining attention worldwide. Consequently, there have been

The Ecology of Industry

The Ecology of Industry
Author: National Academy of Engineering
Publisher: National Academies Press
Total Pages: 160
Release: 1998-09-03
Genre: Science
ISBN: 0309063558
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This volume provides insights into the environmental practices of five industry sectors: materials processing, manufacturing, electric utilities, and pulp and paper. The ecology of industry is presented in terms of systems of production and consumption, taking into account the flows of material, energy, capital, and information. The book examines ways to improve the environmental performance of these industries (and others, such as the service sector) and shows how decisions made by industry managers can leverage systemic environmental improvements elsewhere in the economy.