The Use of Fly Ash in Highway Construction PDF Download
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Author: Vernon J. Marks
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 30
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Book Description
In 1982 the Iowa DOT allowed a successful bidder the option of submitting materials and proportions using fly ash to produce a portland cement concrete (PCC) paving mixture to meet a specified compressive strength. The contractor, Irving F. Jensen, received approval for the use of a concrete mixture utilizing 500 lbs. of portland cement and 88 lbs. of fly ash as a replacement of 88 lbs. of portland cement. The PCC mixture was utilized on the Muscatine County US 61 relocation bypass paved as project F-61-4(32)--20-70. A Class "C" fly ash obtained from the Chillicothe electric generating plant approximately 100 miles away was used in the project. This use of fly ash in lieu of portland cement resulted in a cost savings of $64,500 and an energy savings of approximately 16 billion BTU. The compressive strength of this PCC mixture option was very comparable to concrete mixtures produced without the use of fly ash. The pavement has been performing very well. The substitution of fly ash for 15% of the cement has been allowed as a contractor's option since 1984. Due to the cost savings, it has been used in almost all Iowa PCC paving since that time.
Author: Vernon J. Marks
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 30
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Book Description
In 1982 the Iowa DOT allowed a successful bidder the option of submitting materials and proportions using fly ash to produce a portland cement concrete (PCC) paving mixture to meet a specified compressive strength. The contractor, Irving F. Jensen, received approval for the use of a concrete mixture utilizing 500 lbs. of portland cement and 88 lbs. of fly ash as a replacement of 88 lbs. of portland cement. The PCC mixture was utilized on the Muscatine County US 61 relocation bypass paved as project F-61-4(32)--20-70. A Class "C" fly ash obtained from the Chillicothe electric generating plant approximately 100 miles away was used in the project. This use of fly ash in lieu of portland cement resulted in a cost savings of $64,500 and an energy savings of approximately 16 billion BTU. The compressive strength of this PCC mixture option was very comparable to concrete mixtures produced without the use of fly ash. The pavement has been performing very well. The substitution of fly ash for 15% of the cement has been allowed as a contractor's option since 1984. Due to the cost savings, it has been used in almost all Iowa PCC paving since that time.
Author: Jonathan A. Annable
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 36
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Book Description
Author: H. D. Clemmons
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 39
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Book Description
Author: Woodrow J. Halstead
Publisher:
ISBN:
Category : Cement
Languages : en
Pages : 46
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Book Description
This report is essentially a synthesis of pertinent information concerning the use of fly ash as an ingredient in concrete for highway construction. It has been prepared to provide a basis for an adequate response by the Department of Highways and Transportation to requirements of the Resource Conservation and Recovery Act and the Environmental Protection Agency pertaining to the use of this by-product in concrete purchased with federal funds. Special attention is given to the quality control and acceptance problems associated with highway usage of fly ash concrete, with emphasis on problems relating to air entrainment. References to the background literature that established the suitability of fly ash as a pozzolan and its use in concrete are The requirements for fly ash as set forth in ASTM Specification C618 are reviewed and the- characteristics to be expected from concrete containing fly ash are discussed. It is recommended that the Virginia Department of Highways and Transportation permit the use of fly ash in concrete at the option of the contractor with prior approval by the state. It is also recommended that suitable specifications for this use be prepared following the guidelines previously recommended by the Concrete Research Advisory Committee.
Author: American Coal Ash Association
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 92
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Book Description
Coal fly ash is a coal combustion product that has numerous applications in highway construction. Since the first edition of "Fly Ash Facts for Highway Engineers" in 1986, the use of fly ash in highway construction has increased and new applications have been developed. This document provides basic technical information about the various uses of fly ash in highway construction that advances its use in ways that are technically sound, commercially competitive and environmentally safe.
Author: Vernon J. Marks
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: David Q. Hunsucker
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 41
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Book Description
Author: Alfred B. Crawley
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 48
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Book Description
Author: Lawrence L. Sutter
Publisher: Transportation Research Board
ISBN: 0309283558
Category : Political Science
Languages : en
Pages : 91
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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) 749: Methods for Evaluating Fly Ash for Use in Highway Concrete presents suggested changes to coal fly ash specifications and test protocols contained in American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications for Transportation Materials and Methods of Sampling and Testing (AASHTO M 295). The changes suggested include modifications to the test methods currently specified for evaluating acceptability of fly ash for use in highway concrete as well as the introduction of new test methods for enhancing such evaluations. Attachment C: Details of the Research into Methods for Evaluating Fly Ash Use in Highway Concrete is only available online."--Publisher description.
Author:
Publisher:
ISBN:
Category : Fly ash
Languages : en
Pages : 36
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Book Description
Fly ash from Arkansas Power and Light Company's Coal Fired Generating Plants at White Bluff (near Redfield) and Independence (near Newport) was used in conjunction with hydrated lime and water for a slurry pressure injection-slope stabilization on Bolling Road overpass near West Memphis.
